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Frequency distribution of history of tonsilitis for the matched pair case-control study.
| Variable | Frequency (N) | Percent (%) |
|---|---|---|
| Subjects in case group (N = 10) | ||
| Previous history of tonsilitis | 6 | 60 |
| No previous history of tonsillitis | 4 | 40 |
|
| ||
| Subjects in control group (N = 10) | ||
| Previous history of tonsilitis | 2 | 20 |
| No previous history of tonsillitis | 8 | 80 |
