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Testosterone levels (mean ± SEM)
| Group | N | Testosterone (ng/ml) | Age |
|---|---|---|---|
| Young men | 164 | 5.81 ± 0.17 | 22.5 ± 0.3 |
| Older men | 33 | 4.19 ± 0.53 | 60.5 ± 1.6 |
| Young women (no OCs) | 94 | 1.82 ± 0.18 | 22.4 ± 0.5 |
| Young women (OCs) | 66 | 1.45 ± 0.21 | 23.2 ± 0.5 |
| Young women (follicular) | 79 | 1.89 ± 0.21 | 22.0 ± 0.5 |
| Young women (luteal) | 15 | 1.45 ± 0.14 | 24.8 ± 1.8 |
| Older women (no HRT) | 39 | 0.92 ± 0.13 | 61.0 ± 1.6 |
| Older women (HRT) | 15 | 0.83 ± 0.15 | 62.1 ± 2.2 |
| Perimenopausal women | 6 | 1.24 ± 0.26 | 51.5 ± 0.6 |
