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Age and sex distribution of subjects
| Age (years) | Male (%) | Female (%) | Total (%) |
|---|---|---|---|
| 18-27 | 27 (58.7) | 19 (41.3) | 46 (100) |
| 28-37 | 27 (71.1) | 11 (28.9) | 38 (100) |
| 38-47 | 21 (87.5) | 3 (12.5) | 24 (100) |
| 48-57 | 2 (100) | 0 (0) | 2 (100) |
| Total | 77 (70) | 33 (30) | 110 (100) |
