Concentration models tiers

In addition to the possibility for users to work with their own choices for all settings, MCRA implements four tiers from two documents:

  • The optimistic and pessimistic basic assessments from the EFSA 2012 Guidance on the Use of Probabilistic Methodology for Modelling Dietary Exposure to Pesticide Residues (EFSA (2012)).

  • Tier 1 and 2 from the European Commission working document SANTE-2015-10216 rev. 7 (2018) on risk management aspects related to the assessment of cumulative exposure (EC (2018)).

Overview

Table 58 Tier overview for module Concentration models.
Name EC 2018 Acute Tier I EC 2018 Chronic - Tier I EC 2018 Acute Tier II EC 2018 Chronic Tier II EFSA 2012 Optimistic EFSA 2012 Acute Pessimistic EFSA 2012 Chronic Pessimistic EFSA 2022 Acute Tier I EFSA 2022 Chronic Tier I EFSA 2022 Acute Tier II EFSA 2022 Chronic Tier II EFSA 2023 Acute Prospective Tier II EFSA 2023 Chronic Prospective Tier II

Default concentration model

Empirical

Empirical

Empirical

Empirical

Empirical

NonDetectSpikeLogNormal

NonDetectSpikeLogNormal

Empirical

Empirical

Empirical

Empirical

Empirical

Empirical

Include MRL fallback model

false

false

false

false

false

true

true

false

false

false

false

false

false

Restrict LOR imputation to authorised uses

false

false

false

false

false

false

false

false

false

false

false

false

Censored values replacement

ReplaceByLOR

ReplaceByLOR

ReplaceByLOR

ReplaceByLOR

ReplaceByZero

ReplaceByLOR

ReplaceByLOR

ReplaceByLOR

ReplaceByLOR

ReplaceByLOR

ReplaceByLOR

ReplaceByLOR

ReplaceByLOR

Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD)

0.5

0.5

0.5

0.5

1

1

0.5

0.5

0.5

0.5

0.5

0.5

Sample based

true

true

true

true

true

true

true

true

true

true

true

true

true

Impute missing values from available values (if unchecked, missing values are imputed with 0)

true

true

true

true

false

true

true

true

true

true

true

true

true

Correlate imputed values with sample potency

true

true

false

false

false

true

true

true

true

false

false

false

false

Use occurrence frequencies for imputation

true

true

true

true

false

true

true

true

true

true

true

Parametric uncertainty

false

false

false

false

false

true

false

false

false

false

false

false

false

Filter samples exceeding the concentration limits

false

false

false

false

false

false

false

false

false

false

true

true

Use substance conversion rules

true

true

true

true

true

true

true

true

true

true

Substance conversion method

UseMostToxic

UseMostToxic

DrawRandom

DrawRandom

UseMostToxic

UseMostToxic

DrawRandom

DrawRandom

DrawRandom

DrawRandom

Retain all allocated substances after active substance allocation

true

true

true

true

true

true

true

true

true

true

Account for substance authorisations in substance conversions

false

false

true

true

false

false

true

true

true

true

Fix duplicate substance allocation inconsistencies

false

false

false

false

false

false

false

false

false

false

Use extrapolation rules

true

true

true

true

false

false

false

false

false

false

Threshold for extrapolation

10

10

10

10

Restrict extrapolations to equal MRLs

true

true

true

true

Restrict extrapolations to authorised uses

true

true

true

true

Impute water concentrations

true

true

true

true

true

true

true

true

true

true

Water concentration value (µg/kg)

0.1

0.1

0.05

0.05

0.1

0.1

0.05

0.05

0.05

0.05

Restrict water imputation to the five most toxic substances

true

true

true

true

true

true

true

true

true

true

Restrict water imputation to authorised uses

false

false

false

false

false

false

false

false

false

false

Restrict water imputation to approved substances

false

false

false

false

true

true

true

true

true

true

Apply occurrence pattern percentages

false

false

true

true

false

false

true

true

true

true

Target level

External

External

External

External

External

External

External

External

External

External

External

External

External

Scale up use frequency to 100%

true

true

true

true

true

true

Restrict use percentage up-scaling to authorised uses

true

true

true

true

true

true

MRL Factor (f x MRL)

1

1

Concentration limit filter exceedance factor

2

2

Include focal commodity concentrations

true

true

Focal commodity substance occurrence percentage

20

20

Adjustment factor for the focal food/substance concentration

1

1

Use deterministic substance conversions for focal commodity

true

true

The sections below describe the settings specified by each tier in detail.

Retrospective dietary CRA (EC 2018) - Acute / Tier I

Table 59 Tier definition for Retrospective dietary CRA (EC 2018) - Acute / Tier I.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency true
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Use substance conversion rules true Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Substance conversion method UseMostToxic Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Retain all allocated substances after active substance allocation true Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Account for substance authorisations in substance conversions false Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Fix duplicate substance allocation inconsistencies false Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Use extrapolation rules true Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Threshold for extrapolation 10 Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Restrict extrapolations to equal MRLs true Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Restrict extrapolations to authorised uses true Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Impute water concentrations true Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Water concentration value (µg/kg) 0.1 Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Restrict water imputation to the five most toxic substances true Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Restrict water imputation to authorised uses false Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Restrict water imputation to approved substances false Retrospective dietary CRA (EC 2018) - Acute / Tier I Concentrations
Apply occurrence pattern percentages false Retrospective dietary CRA (EC 2018) - Acute / Tier I Occurrence patterns
Target level External Retrospective dietary CRA (EC 2018) - Acute / Tier I Hazard characterisations

Retrospective dietary CRA (EC 2018) - Chronic / Tier I

Table 60 Tier definition for Retrospective dietary CRA (EC 2018) - Chronic / Tier I.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency true
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Use substance conversion rules true Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Substance conversion method UseMostToxic Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Retain all allocated substances after active substance allocation true Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Account for substance authorisations in substance conversions false Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Fix duplicate substance allocation inconsistencies false Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Use extrapolation rules true Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Threshold for extrapolation 10 Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Restrict extrapolations to equal MRLs true Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Restrict extrapolations to authorised uses true Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Impute water concentrations true Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Water concentration value (µg/kg) 0.1 Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Restrict water imputation to the five most toxic substances true Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Restrict water imputation to authorised uses false Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Restrict water imputation to approved substances false Retrospective dietary CRA (EC 2018) - Chronic / Tier I Concentrations
Apply occurrence pattern percentages false Retrospective dietary CRA (EC 2018) - Chronic / Tier I Occurrence patterns
Target level External Retrospective dietary CRA (EC 2018) - Chronic / Tier I Hazard characterisations

Retrospective dietary CRA (EC 2018) - Acute / Tier II

Table 61 Tier definition for Retrospective dietary CRA (EC 2018) - Acute / Tier II.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency false
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Use substance conversion rules true Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Substance conversion method DrawRandom Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Retain all allocated substances after active substance allocation true Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Account for substance authorisations in substance conversions true Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Fix duplicate substance allocation inconsistencies false Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Use extrapolation rules true Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Threshold for extrapolation 10 Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Restrict extrapolations to equal MRLs true Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Restrict extrapolations to authorised uses true Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Impute water concentrations true Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Water concentration value (µg/kg) 0.05 Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Restrict water imputation to the five most toxic substances true Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Restrict water imputation to authorised uses false Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Restrict water imputation to approved substances false Retrospective dietary CRA (EC 2018) - Acute / Tier II Concentrations
Apply occurrence pattern percentages true Retrospective dietary CRA (EC 2018) - Acute / Tier II Occurrence patterns
Scale up use frequency to 100% true Retrospective dietary CRA (EC 2018) - Acute / Tier II Occurrence patterns
Restrict use percentage up-scaling to authorised uses true Retrospective dietary CRA (EC 2018) - Acute / Tier II Occurrence patterns
Target level External Retrospective dietary CRA (EC 2018) - Acute / Tier II Hazard characterisations

Retrospective dietary CRA (EC 2018) - Chronic / Tier II

Table 62 Tier definition for Retrospective dietary CRA (EC 2018) - Chronic / Tier II.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency false
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Use substance conversion rules true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Substance conversion method DrawRandom Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Retain all allocated substances after active substance allocation true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Account for substance authorisations in substance conversions true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Fix duplicate substance allocation inconsistencies false Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Use extrapolation rules true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Threshold for extrapolation 10 Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Restrict extrapolations to equal MRLs true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Restrict extrapolations to authorised uses true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Impute water concentrations true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Water concentration value (µg/kg) 0.05 Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Restrict water imputation to the five most toxic substances true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Restrict water imputation to authorised uses false Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Restrict water imputation to approved substances false Retrospective dietary CRA (EC 2018) - Chronic / Tier II Concentrations
Apply occurrence pattern percentages true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Occurrence patterns
Scale up use frequency to 100% true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Occurrence patterns
Restrict use percentage up-scaling to authorised uses true Retrospective dietary CRA (EC 2018) - Chronic / Tier II Occurrence patterns
Target level External Retrospective dietary CRA (EC 2018) - Chronic / Tier II Hazard characterisations

Retrospective dietary CRA (EFSA 2012) - Optimistic

Use the optimistic model settings according to the EFSA Guidance 2012. Concentration values are sampled using a sample-based empirical distribution. Available processing factors are applied. No unit variability model should be applied.

Table 63 Tier definition for Retrospective dietary CRA (EFSA 2012) - Optimistic.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Censored values replacement ReplaceByZero
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) false
Correlate imputed values with sample potency false
Use occurrence frequencies for imputation false
Parametric uncertainty false
Target level External Retrospective dietary CRA (EFSA 2012) - Optimistic Hazard characterisations

Retrospective dietary CRA (EFSA 2012) - Acute / Pessimistic

Acute probabilistic exposure assessment using the pessimistic model settings according to the EFSA Guidance 2012. Only processing factors > 1 are applied. For unit variability, the Beta distribution is applied.

Table 64 Tier definition for Retrospective dietary CRA (EFSA 2012) - Acute / Pessimistic.
Name Setting From input tier In module
Default concentration model NonDetectSpikeLogNormal
Include MRL fallback model true
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 1
MRL Factor (f x MRL) 1
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency true
Parametric uncertainty true
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EFSA 2012) - Acute / Pessimistic Concentrations
Target level External Retrospective dietary CRA (EFSA 2012) - Acute / Pessimistic Hazard characterisations

Retrospective dietary CRA (EFSA 2012) - Chronic / Pessimistic

Chronic probabilistic exposure assessment using the pessimistic model settings according to the EFSA Guidance 2012. Only processing factors > 1 are applied.

Table 65 Tier definition for Retrospective dietary CRA (EFSA 2012) - Chronic / Pessimistic.
Name Setting From input tier In module
Default concentration model NonDetectSpikeLogNormal
Include MRL fallback model true
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 1
MRL Factor (f x MRL) 1
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EFSA 2012) - Chronic / Pessimistic Concentrations
Target level External Retrospective dietary CRA (EFSA 2012) - Chronic / Pessimistic Hazard characterisations

Retrospective dietary CRA (EFSA 2022) - Acute / Tier I

Table 66 Tier definition for Retrospective dietary CRA (EFSA 2022) - Acute / Tier I.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency true
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Use substance conversion rules true Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Substance conversion method UseMostToxic Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Retain all allocated substances after active substance allocation true Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Account for substance authorisations in substance conversions false Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Fix duplicate substance allocation inconsistencies false Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Use extrapolation rules false Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Impute water concentrations true Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Water concentration value (µg/kg) 0.1 Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Restrict water imputation to the five most toxic substances true Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Restrict water imputation to authorised uses false Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Restrict water imputation to approved substances true Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Concentrations
Apply occurrence pattern percentages false Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Occurrence patterns
Target level External Retrospective dietary CRA (EFSA 2022) - Acute / Tier I Hazard characterisations

Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I

Table 67 Tier definition for Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency true
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Use substance conversion rules true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Substance conversion method UseMostToxic Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Retain all allocated substances after active substance allocation true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Account for substance authorisations in substance conversions false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Fix duplicate substance allocation inconsistencies false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Use extrapolation rules false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Impute water concentrations true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Water concentration value (µg/kg) 0.1 Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Restrict water imputation to the five most toxic substances true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Restrict water imputation to authorised uses false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Restrict water imputation to approved substances true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Concentrations
Apply occurrence pattern percentages false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Occurrence patterns
Target level External Retrospective dietary CRA (EFSA 2022) - Chronic / Tier I Hazard characterisations

Retrospective dietary CRA (EFSA 2022) - Acute / Tier II

Table 68 Tier definition for Retrospective dietary CRA (EFSA 2022) - Acute / Tier II.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency false
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Use substance conversion rules true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Substance conversion method DrawRandom Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Retain all allocated substances after active substance allocation true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Account for substance authorisations in substance conversions true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Fix duplicate substance allocation inconsistencies false Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Use extrapolation rules false Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Impute water concentrations true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Water concentration value (µg/kg) 0.05 Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Restrict water imputation to the five most toxic substances true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Restrict water imputation to authorised uses false Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Restrict water imputation to approved substances true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Concentrations
Apply occurrence pattern percentages true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Occurrence patterns
Scale up use frequency to 100% true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Occurrence patterns
Restrict use percentage up-scaling to authorised uses true Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Occurrence patterns
Target level External Retrospective dietary CRA (EFSA 2022) - Acute / Tier II Hazard characterisations

Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II

Table 69 Tier definition for Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency false
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Use substance conversion rules true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Substance conversion method DrawRandom Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Retain all allocated substances after active substance allocation true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Account for substance authorisations in substance conversions true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Fix duplicate substance allocation inconsistencies false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Use extrapolation rules false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Impute water concentrations true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Water concentration value (µg/kg) 0.05 Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Restrict water imputation to the five most toxic substances true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Restrict water imputation to authorised uses false Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Restrict water imputation to approved substances true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Concentrations
Apply occurrence pattern percentages true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Occurrence patterns
Scale up use frequency to 100% true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Occurrence patterns
Restrict use percentage up-scaling to authorised uses true Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Occurrence patterns
Target level External Retrospective dietary CRA (EFSA 2022) - Chronic / Tier II Hazard characterisations

Prospective dietary CRA (EFSA 2023) - Acute / Tier II

Table 70 Tier definition for Prospective dietary CRA (EFSA 2023) - Acute / Tier II.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency false
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Concentration limit filter exceedance factor 2 Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Use substance conversion rules true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Substance conversion method DrawRandom Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Retain all allocated substances after active substance allocation true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Account for substance authorisations in substance conversions true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Fix duplicate substance allocation inconsistencies false Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Use extrapolation rules false Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Impute water concentrations true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Water concentration value (µg/kg) 0.05 Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Restrict water imputation to the five most toxic substances true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Restrict water imputation to authorised uses false Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Restrict water imputation to approved substances true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Include focal commodity concentrations true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Focal commodity substance occurrence percentage 20 Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Adjustment factor for the focal food/substance concentration 1 Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Use deterministic substance conversions for focal commodity true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Concentrations
Apply occurrence pattern percentages true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Occurrence patterns
Scale up use frequency to 100% true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Occurrence patterns
Restrict use percentage up-scaling to authorised uses true Prospective dietary CRA (EFSA 2023) - Acute / Tier II Occurrence patterns
Target level External Prospective dietary CRA (EFSA 2023) - Acute / Tier II Hazard characterisations

Prospective dietary CRA (EFSA 2023) - Chronic / Tier II

Table 71 Tier definition for Prospective dietary CRA (EFSA 2023) - Chronic / Tier II.
Name Setting From input tier In module
Default concentration model Empirical
Include MRL fallback model false
Restrict LOR imputation to authorised uses false
Censored values replacement ReplaceByLOR
Factor f (f x LOR or f x LOD or LOD + f x (LOQ - LOD) 0.5
Sample based true
Impute missing values from available values (if unchecked, missing values are imputed with 0) true
Correlate imputed values with sample potency false
Use occurrence frequencies for imputation true
Parametric uncertainty false
Filter samples exceeding the concentration limits true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Concentration limit filter exceedance factor 2 Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Use substance conversion rules true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Substance conversion method DrawRandom Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Retain all allocated substances after active substance allocation true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Account for substance authorisations in substance conversions true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Fix duplicate substance allocation inconsistencies false Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Use extrapolation rules false Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Impute water concentrations true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Water concentration value (µg/kg) 0.05 Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Restrict water imputation to the five most toxic substances true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Restrict water imputation to authorised uses false Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Restrict water imputation to approved substances true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Include focal commodity concentrations true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Focal commodity substance occurrence percentage 20 Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Adjustment factor for the focal food/substance concentration 1 Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Use deterministic substance conversions for focal commodity true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Concentrations
Apply occurrence pattern percentages true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Occurrence patterns
Scale up use frequency to 100% true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Occurrence patterns
Restrict use percentage up-scaling to authorised uses true Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Occurrence patterns
Target level External Prospective dietary CRA (EFSA 2023) - Chronic / Tier II Hazard characterisations