Summarizing Numeric Variables
Table 1
Table
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Table 1
Table
Table 1
| Numeric summary | Best suited for | Clinical data management use |
|---|---|---|
| Mean | Approximately symmetric variables | Average age or score |
| Standard deviation | Spread around the mean | Variation in baseline measurements |
| Median | Skewed variables | Length of stay or time to follow-up |
| Interquartile range | Spread for skewed variables | Middle 50 percent of values |
| Minimum and maximum | Range and outlier review | Detect impossible values |
| Number missing | Completeness | Identify variables requiring queries |