Data Validation During Entry
Table 1
Table
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Table 1
Table
Table 1
| Control | Example | Purpose |
|---|---|---|
| Required field | Enrollment date must be completed | Improves completeness of critical variables |
| Numeric range | Temperature must be 30-45 degrees Celsius | Prevents implausible values and unit errors |
| Date format | Dates entered as YYYY-MM-DD | Standardizes exports and analysis |
| Cross-field logic | Discharge date cannot precede admission date | Detects inconsistencies |
| Branching logic | Pregnancy questions shown only when applicable | Reduces non-applicable missing values |
| Coded options | Outcome status selected from defined list | Improves analysis readiness |