Description
Subtract a supplied age correction from recorded chronological days.
Developmental records distinguish calendar age, supplied age corrections, observation states, assent and privacy choices. A corrected age can be negative under supplied assumptions, and a missing response differs from an observed zero. A display mask changes presentation without protecting the underlying record.
Subtract a supplied age correction from recorded chronological days.
When to use this tool
Use Infant Age Correction Record Field when you already have chronologicalAgeDays, correctionDays and need to subtract a supplied age correction from recorded chronological days.
How to use the tool and how it works
- Enter chronologicalAgeDays, correctionDays. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read correctedAgeDays, correctionApplied. Inspect correctionApplied before interpreting the associated values.
Require both counts nonnegative safe integers; return chronological-correction and correctionApplied=correctionDays!==0.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| chronologicalAgeDays | Chronological Age Days | Required. Safe integer; minimum 0. |
| correctionDays | Supplied nonnegative age correction; no gestational correction is inferred. | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| correctedAgeDays | chronologicalAgeDays-correctionDays; negative values are accepted. | Required. Safe integer. |
| correctionApplied | Correction Applied | Required. Boolean. |
{
"input": {
"chronologicalAgeDays": 100,
"correctionDays": 28
},
"output": {
"correctedAgeDays": 72,
"correctionApplied": true
}
}Limitations and assumptions
- Negative corrected ages are retained. No gestational correction, prematurity, biological age, developmental norm or appropriate convention 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
Use the complete observation or assessment method, age convention and consent context. Review source records and data protection together; local counts, labels and geometric measurements do not establish development, diagnosis or appropriate support.
References
Similar or alternative tools
- Developmental Sample Age Band Boundary
Check a supplied recorded age against a half-open day band.
- Infant Reaching Laterality Index
Calculate a supplied right-minus-left reaching index and total.