Description
Distinguish an unknown symptom entry from a known present or absent entry.
Personal health logs distinguish observed events, unknown entries, device/source identifiers and chosen day or streak boundaries. A numerical activity duration or recorded symptom label organizes supplied data rather than diagnosing a condition. Fixed 86400-second days differ from civil days affected by timezone and daylight-saving changes.
Distinguish an unknown symptom entry from a known present or absent entry.
When to use this tool
Use Symptom Diary Unknown Versus Absent when checking the stated personal-log, missingness, time or streak convention.
How to use the tool and how it works
- Enter entryId, presenceKnown, symptomPresent. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read recordedStatus. Use the output convention below.
Require nonempty entryId and reject symptomPresent=true when presenceKnown=false. Return present or absent for known entries, otherwise unknown.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| entryId | Entry Id | Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192. |
| presenceKnown | False requires symptomPresent=false but returns unknown rather than absent. | Required. Boolean. |
| symptomPresent | Symptom Present | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| recordedStatus | Recorded Status | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"entryId": "E17",
"presenceKnown": false,
"symptomPresent": false
},
"output": {
"recordedStatus": "unknown"
}
}Limitations and assumptions
- Unknown is not absence; no symptom assessment, diagnosis or appropriate health action is provided.
- 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.
Alternative or Complementary methods
Review original records and calibrated devices; consult qualified health professionals for symptoms, interpretation or actual care decisions.
References
Similar or alternative tools
- Self Reported Health Scale Anchor Pair
Record the wording at both ends of a self-reported health scale.
- Home Health Measurement Device ID
Attach a device identifier and namespace to a home-health measurement record.