Description
Validate nonnegative primary, secondary, and simultaneous durations with overlap within each and their union within positive observedMinutes.
Research time coordinates can represent age, residence, observation, or follow-up. Fixed year lengths and censored intervals are modeling conventions; an unfinished observation supplies less timing information than a completed event.
Validate nonnegative primary, secondary, and simultaneous durations with overlap within each and their union within positive observedMinutes.
When to use this tool
Use Older Adult Diary Simultaneous Activity Share when you need an ageing-research interval calculation with an explicit time basis.
How to use the tool and how it works
- Enter primaryMinutes, secondaryMinutes, simultaneousMinutes, observedMinutes. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read uniqueActivityMinutes, simultaneousFraction, unallocatedMinutes. Use the output convention below.
Validate nonnegative primary, secondary, and simultaneous durations with overlap within each and their union within positive observedMinutes. Return union duration, overlap/observed fraction, and the unallocated remainder.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| primaryMinutes | Primary Minutes Unit: min. | Required. Finite number; minimum 0. |
| secondaryMinutes | Secondary Minutes Unit: min. | Required. Finite number; minimum 0. |
| simultaneousMinutes | Simultaneous Minutes Unit: min. | Required. Finite number; minimum 0. |
| observedMinutes | Observed Minutes Unit: min. | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| uniqueActivityMinutes | Unique Activity Minutes Unit: min. | Required. Finite number. |
| simultaneousFraction | Simultaneous Fraction | Required. Finite number. |
| unallocatedMinutes | Unallocated Minutes Unit: min. | Required. Finite number. |
{
"input": {
"primaryMinutes": 120,
"secondaryMinutes": 60,
"simultaneousMinutes": 30,
"observedMinutes": 240
},
"output": {
"uniqueActivityMinutes": 150,
"simultaneousFraction": 0.125,
"unallocatedMinutes": 90
}
}Limitations and assumptions
- Activities and concurrency are supplied rather than detected; the fraction uses all observed time and does not assess care need, wellbeing, or suitable activity.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use actual calendar dates for calendar age and an appropriate censoring-aware analysis for incomplete follow-up. Verify origin, units, and event definitions against the study protocol.
References
Similar or alternative tools
- Older Adult Proxy Window Credit
Return direct minutes alone or add proxy minutes minus their shared overlap when countProxy.
- Older Adult Social Contact Day Rate
Return events per observed day, contact-day share, and events per contact day.