Description
Calculate policy evaluation time exposure term from explicit caller-supplied inputs.
A policy scenario makes eligibility bases, rates, thresholds, periods, and costs explicit. A calculated share or balance follows those assumptions. It does not select the governing policy or establish what caused an observed program outcome.
Calculate policy evaluation time exposure term from explicit caller-supplied inputs.
When to use this tool
Use it for policy evaluation time exposure term when the required inputs and conventions are already available.
How to use the tool and how it works
- Enter participants, plannedMonths, unavailablePersonMonths. Use the stated units and boundary conventions.
- Run the calculation. Correct any input error before interpreting a result.
- Read plannedPersonMonths, observedPersonMonths, exposureFraction. Inspect any known, defined, inclusion, or boundary flags before interpreting numeric values.
Require positive integer participants, positive plannedMonths, and unavailablePersonMonths within zero and participants*plannedMonths. Return planned and observed person-months and exposureFraction=observed/planned.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| participants | Participants | Required. Safe integer; minimum 1. |
| plannedMonths | Planned Months | Required. Finite number; strictly above 0. |
| unavailablePersonMonths | Unavailable Person Months | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| plannedPersonMonths | Planned Person Months | Required. Finite number. |
| observedPersonMonths | Observed Person Months | Required. Finite number. |
| exposureFraction | Exposure Fraction | Required. Finite number. |
{
"input": {
"participants": 100,
"plannedMonths": 12,
"unavailablePersonMonths": 120
},
"output": {
"plannedPersonMonths": 1200,
"observedPersonMonths": 1080,
"exposureFraction": 0.9
}
}Limitations and assumptions
- This uses aggregate unavailable exposure rather than individual follow-up histories. Exposure fraction does not establish treatment adherence, retention, or a causal evaluation result.
- The field tables describe structural bounds; the mechanics also state cross-field requirements. Malformed input shapes, disallowed keys, and invalid domains cause input errors. Results must remain finite and within the declared output contract. A successful false flag or zero placeholder is distinct from an error.
- Numeric arithmetic uses binary floating point. Exact comparisons have no hidden tolerance or decimal rounding; negative zero is exported as zero. Decimal-text integer operations retain the exactness specifically stated above.
Alternative or Complementary methods
For policy evaluation time exposure term, check the source records and the supplied rule before comparing the result with another method. Consult the applicable authoritative rule when deciding eligibility, legal timing, fees, or obligations.
References
Similar or alternative tools
- Policy Band Boundary Distance
Calculate policy band boundary distance from explicit caller-supplied inputs.
- Policy Coverage Denominator Change
Isolate the effect of a supplied coverage-denominator change with the numerator held fixed.