Description
Return corrected research age and margins to an age window.
Developmental-study observations use explicit trial, age, stimulus and missing-data conventions. Counterbalance flags and observation shares describe supplied research records; they do not establish actual stimulus presentation, an age correction appropriate for clinical use or a developmental assessment.
Return corrected research age and margins to an age window.
When to use this tool
Use Research Visit Age Window Offset when checking the stated child-study observation, timing or record convention.
How to use the tool and how it works
- Enter ageDays, windowStartDays, windowEndDays, suppliedAgeCorrection. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read correctedAge, lowerMargin, upperMargin. Use the output convention below.
Return corrected research age and margins to an age window. Require windowStartDays <= windowEndDays; correctedAge = ageDays+suppliedAgeCorrection, lowerMargin = corrected-start, upperMargin = end-corrected.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| ageDays | Age Days | Required. Safe integer. |
| windowStartDays | Window Start Days | Required. Safe integer. |
| windowEndDays | Window End Days | Required. Safe integer. |
| suppliedAgeCorrection | Signed number of days added to ageDays, not an automatically selected clinical correction. | Required. Safe integer. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| correctedAge | Corrected Age | Required. Safe integer. |
| lowerMargin | Lower Margin | Required. Safe integer. |
| upperMargin | Upper Margin | Required. Safe integer. |
{
"input": {
"ageDays": 100,
"windowStartDays": 90,
"windowEndDays": 110,
"suppliedAgeCorrection": -5
},
"output": {
"correctedAge": 95,
"lowerMargin": 5,
"upperMargin": 15
}
}Limitations and assumptions
- Correction is added and may give negative age; no clinical corrected-age convention, eligibility or developmental assessment is selected.
- 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
Review the study protocol, actual observations and consent/assent records; use validated assessment and qualified professional judgment for developmental or care decisions.
References
Similar or alternative tools
- Research Task Look Window Gap
Compare looking-time overlap with a required task duration.
- Research Age Month Boundary Gap
Return age offset from a supplied month boundary.