Declared missing-token audit
Count explicitly declared missing-value tokens without confusing zero with missingness.
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Matching is case-sensitive after trimming outer spaces. Use literal tokens separated by |; blank records are unsupported in this compact format. Zero is only missing if explicitly declared.
The starting values are hypothetical. Results update as you edit. Use aggregate or synthetic inputs only.
Calculation results
- Values audited
- 6
- Mapped missing count
- 4
- Mapped missing fraction
- 0.66666667
- Per-token counts
- NA: 2 | N/A: 1 | unknown: 1
- Zero values treated as missing
- No
How to interpret the output
A token dictionary makes import decisions auditable. Counts show which strings would become missing under the stated mapping, without modifying source data or imputing values. Context-specific values such as “unknown”, “not applicable” and “not measured” may need separate codes rather than one merged missing category.
Method referenceSource checked 2026-11-06. Read the reproducible calculator validation report.