Strain Index Wrist Posture Score Calculator
StrainIndex wrist-posture observed category and caller same-edition multiplier table, no universal mapping from one flexion angle alone. Exact caller verified numeric reference; signed deviations retained. 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 wrist-posture factor belongs to a specified strain-index assessment rubric.
A wrist-posture factor belongs to a specified strain-index assessment rubric.1
A caller reference lookup does not measure wrist posture or decide which factor applies. Use this tool to compare an observation with an exact caller-supplied numeric reference.
When to use Strain Index Wrist Posture Score Calculator
Use this tool to compare an observation with an exact caller-supplied numeric reference. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
How to use Strain Index Wrist Posture Score Calculator and understand its results
- Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
- Enter callerVerifiedStrainWristPostureKeys, callerVerifiedStrainWristPostureValues, queryStrainWristPostureKey, observedStrainWristPostureValue, using the field meanings and rules below, then run the tool.
- Read callerReferenceValue, signedObservedMinusReference. 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 |
|---|---|---|---|
| callerVerifiedStrainWristPostureKeys | Caller verified strain wrist posture keys; caller assertion or measurement requiring independent evidence | list of string | Required |
| callerVerifiedStrainWristPostureValues | Caller verified strain wrist posture values; caller assertion or measurement requiring independent evidence | list of number | Required |
| queryStrainWristPostureKey | Query strain wrist posture key | string | Required |
| observedStrainWristPostureValue | Observed strain wrist posture value | number | Required |
Enter nonempty aligned caller reference IDs and numeric reference values, an exact query ID and an observed value on the same unit and protocol basis. Reference values and the observation are finite signed numbers; there is no nonnegative check here and they need not be integers. IDs must be unique and nonblank, with at most 128 UTF-16 units each. The implementation uses case-sensitive exact matching without trimming, returns the matched reference value and subtracts it from the observation. An absent query or duplicate key fails. No regional dataset is installed, retrieved or authenticated.
reference=values[indexOfExact(queryId,ids)]; signedDifference=observed−reference Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| callerReferenceValue | Caller Reference Value; follow the units, sign, ordering and evidence convention stated above | number |
| signedObservedMinusReference | Signed Observed Minus Reference; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"callerVerifiedStrainWristPostureKeys": [
"a",
"b"
],
"callerVerifiedStrainWristPostureValues": [
2,
4
],
"queryStrainWristPostureKey": "b",
"observedStrainWristPostureValue": 5
},
"output": {
"callerReferenceValue": 4,
"signedObservedMinusReference": 1
}
}Limitations and assumptions
The numerical reference, unit basis and observation come from the caller. No authoritative regional table, standard edition, calibration or management rule is installed, retrieved or verified.
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.