REBA Activity Coupling Adjuster Calculator
REBA coupling addition to independently scored Group B, and separate activity addition to caller Table C already evaluated with coupling-adjusted B. Coupling is not added a second time to Table C. Caller independently establishes matching protocol, evidence and applicability; not a work-safety determination.
Description
Coupling and activity indicators are separate Rapid Entire Body Assessment (REBA) adjustments.
Coupling and activity indicators are separate Rapid Entire Body Assessment (REBA) adjustments.1
Updating a supplied group score and a supplied Table C value does not recompute Table C from the adjusted posture groups. Use this tool to calculate REBA Activity Coupling Adjuster from the supplied measurements and assumptions.
When to use REBA Activity Coupling Adjuster Calculator
Use this tool to calculate REBA Activity Coupling Adjuster from the supplied measurements and assumptions. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
How to use REBA Activity Coupling Adjuster Calculator and understand its results
- Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
- Enter callerCouplingAdjustment, independentGroupBPostureScore, staticHoldOverMinute, repetitionOverFourPerMinute, rapidLargePostureChanges, independentTableCScore, using the field meanings and rules below, then run the tool.
- Read couplingAdjustment, couplingAdjustedGroupBScore, activityAdjustment, activityAdjustedScore. 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 |
|---|---|---|---|
| independentGroupBPostureScore | Independent Group B posture score | number | Required |
| callerCouplingAdjustment | Caller coupling adjustment | number | Required |
| staticHoldOverMinute | Static hold over minute | boolean | Required |
| repetitionOverFourPerMinute | Repetition over four per minute | boolean | Required |
| rapidLargePostureChanges | Rapid large posture changes | boolean | Required |
| independentTableCScore | Independent table c score | number | Required |
Enter integer Group B 1–9, coupling score 0–3, independently established Table C score 1–12 and three explicit activity booleans. Return Group B plus coupling, the sum of activity flags and Table C plus that sum. Table C is used as supplied and is not recomputed using the newly adjusted Group B.
adjustedB=groupB+coupling; activity=ΣthreeBooleans; adjustedC=callerTableC+activity Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| couplingAdjustment | Coupling Adjustment; follow the units, sign, ordering and evidence convention stated above | number |
| couplingAdjustedGroupBScore | Coupling Adjusted Group B Score; follow the units, sign, ordering and evidence convention stated above | number |
| activityAdjustment | Activity Adjustment; follow the units, sign, ordering and evidence convention stated above | number |
| activityAdjustedScore | Activity Adjusted Score; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"callerCouplingAdjustment": 1,
"independentGroupBPostureScore": 4,
"staticHoldOverMinute": true,
"repetitionOverFourPerMinute": false,
"rapidLargePostureChanges": true,
"independentTableCScore": 5
},
"output": {
"couplingAdjustment": 1,
"couplingAdjustedGroupBScore": 5,
"activityAdjustment": 2,
"activityAdjustedScore": 7
}
}Limitations and assumptions
Updating a supplied group score and a supplied Table C value does not recompute Table C from the adjusted posture groups. 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 REBA Arm-Wrist Score Calculator for this related task: REBA arm and wrist components encode observed joint positions and additional conditions.
Use REBA Grand Score Risk Category Mapper when its separate inputs and assumptions fit the question: A REBA grand score can be mapped to an action category.
References
Similar or alternative tools
- REBA Arm-Wrist Score Calculator
REBA arm and wrist components encode observed joint positions and additional conditions.
- REBA Grand Score Risk Category Mapper
A REBA grand score can be mapped to an action category.