Description
Audit a research age-anchor token and supplied day offset without deriving gestational age or clinical dating.
Pregnancy and birth research records distinguish observed and estimated values, dating anchors, day coordinates, time precision, clock offsets, and source permissions. A notation conversion or interval comparison does not determine a clinical date or validate consent. The supplied reference convention and uncertainty need to remain visible.
Audit a research age-anchor token and supplied day offset without deriving gestational age or clinical dating.
When to use this tool
Use Pregnancy Study Age Anchor Token when you need this supplied research age, date, interval, clock, provenance, or record-rule calculation.
How to use the tool and how it works
- Enter anchorToken, allowedAnchors, elapsedDays, suppliedAnchorOffsetDays. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read recognized, anchoredDays. Inspect recognized before interpreting the associated values.
Return recognized on exact membership of anchorToken in allowedAnchors, and anchoredDays=elapsedDays+suppliedAnchorOffsetDays.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| anchorToken | Anchor Token | Required. Text; maximum UTF-16 length 8192. |
| allowedAnchors | Allowed Anchors | Required. Array of text; maximum UTF-16 length 8192; maximum items 256. |
| elapsedDays | Elapsed Days | Required. Safe integer. |
| suppliedAnchorOffsetDays | Supplied Anchor Offset Days | Required. Safe integer. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| recognized | Recognized | Required. Boolean. |
| anchoredDays | Elapsed plus supplied offset, calculated even if recognized=false. | Required. Safe integer. |
{
"input": {
"anchorToken": "A",
"allowedAnchors": [
"A",
"B"
],
"elapsedDays": 100,
"suppliedAnchorOffsetDays": 14
},
"output": {
"recognized": true,
"anchoredDays": 114
}
}Limitations and assumptions
- AnchoredDays is calculated even when recognized=false. Vocabulary and offset are supplied, not authenticated or selected from clinical guidance; the result does not establish an actual pregnancy dating convention.
- 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 verified dates and sources together with the intended research or clinical assessment process. Check dating anchors, clock conventions, uncertainty, and whether a supplied reporting rule is appropriate for the question.
References
Similar or alternative tools
- Pregnancy Study Dating Anchor Offset
Compare supplied dating anchors on a common research day index.
- Gestational Source Age Gap
Compare explicitly supplied research age records and civil-date elapsed time; no dating or care rule.