Job Severity Index Repetition-Rest Ratio Calculator
Operational job-severity repetition/rest ratio from actual episode counts/recovery, not OCRA technical-actions/active-time frequency or injury likelihood. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
A pooled task ratio divides recorded counts by accumulated recovery exposure.
A pooled task ratio divides recorded counts by accumulated recovery exposure.1
Its interpretation depends on the count definition and time basis rather than a built-in job-severity scale. Use this tool to calculate job Severity Index Repetition-Rest Ratio from the supplied measurements and assumptions.
When to use Job Severity Index Repetition-Rest Ratio Calculator
Use this tool to calculate job Severity Index Repetition-Rest Ratio from the supplied measurements and assumptions. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
How to use Job Severity Index Repetition-Rest Ratio Calculator and understand its results
- Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
- Enter observedRepetitionCounts, observedRecoverySeconds, using the field meanings and rules below, then run the tool.
- Read observedRepetitionPerRecoverySecond. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedRepetitionCounts | Observed repetition counts | list of number | Required |
| observedRecoverySeconds | Observed recovery seconds | list of number | Required |
Enter nonempty aligned nonnegative exactly representable integer counts and positive recovery durations in seconds. Pool counts and seconds separately and divide the totals. No severity weighting, diagnosis or built-in classification scale is supplied.
ratioPerSecond=Σcounts/ΣrecoverySeconds Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| observedRepetitionPerRecoverySecond | Observed Repetition Per Recovery Second; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"observedRepetitionCounts": [
10,
20
],
"observedRecoverySeconds": [
5,
10
]
},
"output": {
"observedRepetitionPerRecoverySecond": 2
}
}Limitations and assumptions
Its interpretation depends on the count definition and time basis rather than a built-in job-severity scale. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Strain Index Total Multiplied Score Rater for this related task: A strain index combines separately established multipliers into a product.
Use Strain Index Effort Duration Score Calculator when its separate inputs and assumptions fit the question: Effort-duration percentage describes active effort time within a defined observation window.
References
Similar or alternative tools
- Strain Index Total Multiplied Score Rater
A strain index combines separately established multipliers into a product.
- Strain Index Effort Duration Score Calculator
Effort-duration percentage describes active effort time within a defined observation window.