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| Inner city site | Suburban site | |
|---|---|---|
| No. of patients | 4777 | 35 544 |
| Sex, no. (%) | Male: 2063 (43) Female: 2714 (57) |
Male: 11 643 (33) Female: 23 900 (67) Not specified: 1 |
| Age, yr, mean ± SD |
44 ± 20 | 50 ± 22 |
Note: SD = standard deviation.
