Composite Uncertainty Factor Calculator
Product of actual independently justified named uncertainty factors, not default10-per-factor or doublecount overlapping evidence. Does not derive a safe dose, choose factors or establish authoritative assessment.
Description
Composite uncertainty factors combine separately justified adjustments in an assessment.
When to use Composite Uncertainty Factor Calculator
Use this tool to calculate or review the supplied observations under the stated rules. Establish the chemical, exposure route, endpoint, measurement basis and independently applicable assay or assessment reference.
How to use Composite Uncertainty Factor Calculator and understand its results
- Establish the chemical, exposure route, endpoint, measurement basis and independently applicable assay or assessment reference.
- Enter callerIndependentlyJustifiedFactorIds, callerIndependentlyJustifiedFactors, using the field meanings and rules below, then run the tool.
- Read result.conditionalCompositeUncertaintyFactor. Use the units and subtraction order below to interpret each value; retain negative differences where returned.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| callerIndependentlyJustifiedFactorIds | Caller independently justified factor ids | list of string | Required |
| callerIndependentlyJustifiedFactors | Caller independently justified factors | list of number | Required |
Supply nonempty aligned unique nonblank factor identifiers and finite factors of at least one. Multiply the factors, preserving their supplied list as the declared components. Reject a nonfinite product; the tool does not choose factors, infer independence or retrieve regulatory defaults.
combinedFactor=Π(factor_i) Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Qualified observed calculation or explicit reference | object |
| result.conditionalCompositeUncertaintyFactor | Product of the independently justified named factors. | number |
{
"input": {
"callerIndependentlyJustifiedFactorIds": [
"interspecies",
"intraspecies"
],
"callerIndependentlyJustifiedFactors": [
10,
3
]
},
"output": {
"result": {
"conditionalCompositeUncertaintyFactor": 30
}
}
}Limitations and assumptions
Chemical identity, route, assay, exposure basis and reference applicability are caller-established. The output supplies no causal conclusion, universal toxicity threshold or authoritative regulatory determination.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries, subject to the narrower lengths and code rules above. String lists allow at most 128 entries, with each string at most 128 UTF-16 units; blank and duplicate rules are stated above. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Subchronic to Chronic Extrapolation Calculator: Subchronic-to-chronic extrapolation addresses differences in exposure duration under an assessment method. For a complementary comparison, use Intraspecies Uncertainty Calculator: Intraspecies uncertainty concerns variation within a target species or population under an assessment method.
References
-
Composite Uncertainty Factor Calculator — tool.io
-
Reference Dose: uncertainty factors — United States Environmental Protection Agency
Similar or alternative tools
- Subchronic to Chronic Extrapolation Calculator
Subchronic-to-chronic extrapolation addresses differences in exposure duration under an assessment method.
- Intraspecies Uncertainty Calculator
Intraspecies uncertainty concerns variation within a target species or population under an assessment method.