Description
Subtract suppliedCycleOrigin from recordedDay and add one only when oneBased.
Menstrual and visit records can contain uncertain onsets, partial observation windows, and supplied day origins. A bounded interval calculation describes those records without predicting fertility or establishing a normal clinical pattern.
Subtract suppliedCycleOrigin from recordedDay and add one only when oneBased.
When to use this tool
Use Research Cycle Day Offset when you need one explicit day-coordinate or uncertainty-bound component.
How to use the tool and how it works
- Enter recordedDay, suppliedCycleOrigin, oneBased. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read relativeDay. Use the output convention below.
Subtract suppliedCycleOrigin from recordedDay and add one only when oneBased.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| recordedDay | Recorded Day | Required. Safe integer. |
| suppliedCycleOrigin | Supplied Cycle Origin | Required. Safe integer. |
| oneBased | One Based | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| relativeDay | Relative Day | Required. Safe integer. |
{
"input": {
"recordedDay": 20,
"suppliedCycleOrigin": 10,
"oneBased": true
},
"output": {
"relativeDay": 11
}
}Limitations and assumptions
- Inputs are numeric day coordinates and negative relative days are allowed; this does not infer cycle onset, ovulation, fertility, pregnancy, or a normal cycle range.
- 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
Preserve uncertainty and consult an appropriate health professional for symptoms, clinical interpretation, or care scheduling.
References
Similar or alternative tools
- Menstrual Diary Cycle Length One Pair
Return onset difference and that difference minus or plus the sum of uncertainties.
- Cycle Record Left Censored Interval Tag
Return first-onset-minus-observation-start as minimumDays and exact prior-to-first difference only when known, otherwise exactDays zero with exactPresent false.