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Characteristics of chromium and control groups. Values are numbers (percentages) unless stated otherwise
| Chromium group (n=398) | Control group (n=401) | P value | |
|---|---|---|---|
| Men | 150 (38) | 137 (34) | 0.30 |
| Women | 247 (62) | 263 (66) | |
| Age (years): | |||
| 16-24 | 11 (3) | 24 (6) | 0.01 |
| 25-34 | 39 (10) | 52 (13) | |
| 35-44 | 44 (11) | 54 (14) | |
| 45-54 | 55 (14) | 60 (15) | |
| 55-64 | 75 (19) | 85 (21) | |
| ⩾65 | 173 (44) | 125 (31) |
