Description
Separate explicit declined, unpresented and unexplained-missing research-form items rather than treating opt-out as an answer.
Research questionnaires and interview records distinguish answered, declined, omitted, unpresented, and inapplicable items. Timing and support annotations also affect their denominators. A completeness measure or scale transformation describes those records without establishing an instrument score or a mental-health assessment.
Separate explicit declined, unpresented and unexplained-missing research-form items rather than treating opt-out as an answer.
When to use this tool
Use Psychiatric Form Opt Out Versus Missing when you need the particular completeness, timing, polarity, or bookkeeping term for supplied research and interview records.
How to use the tool and how it works
- Enter totalItems, answered, declined, notPresented. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read unexplainedMissing, responseFraction, declineFractionOfPresented. Use the output convention below.
Subtract answered, declined, and notPresented from totalItems for unexplainedMissing. Divide answered and declined separately by totalItems-notPresented, requiring feasible integer categories and a positive presented base.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| totalItems | Total Items | Required. Safe integer; minimum 1. |
| answered | Answered | Required. Safe integer; minimum 0. |
| declined | Declined | Required. Safe integer; minimum 0. |
| notPresented | Not Presented | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| unexplainedMissing | Unexplained Missing | Required. Safe integer. |
| responseFraction | Answered divided by presented items, excluding notPresented. | Required. Finite number. |
| declineFractionOfPresented | Decline Fraction Of Presented | Required. Finite number. |
{
"input": {
"totalItems": 20,
"answered": 12,
"declined": 3,
"notPresented": 2
},
"output": {
"unexplainedMissing": 3,
"responseFraction": 0.6666666666666666,
"declineFractionOfPresented": 0.16666666666666666
}
}Limitations and assumptions
- Declined and unexplained missing remain distinct. This does not infer consent, intent, clinical status, questionnaire validity, or an instrument-specific missing-response rule.
- The field tables state structural bounds; the mechanics also specify cross-field constraints. Malformed inputs and unsupported domains cause errors. A successful false flag, empty branch value, or zero placeholder has the meaning stated above and is distinct from an input error.
- 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. Signed zero is exported as zero.
Alternative or Complementary methods
Use the relevant validated instrument and its documented missing-response and scoring procedures when the task requires an assessment. Verify research annotations and timing before combining record terms.
References
Similar or alternative tools
- Psychiatric Research Informant Time Gap
Explicit temporal comparability audit for two research reports, without assessing an informant or clinical agreement.
- Psychiatric Study Repeated Item Agreement
Paired supplied item agreement under an explicit numerical tolerance, without questionnaire-specific reliability or clinical interpretation.