Table 1.
Baseline parameters of the study participants
| na | Mean (S.D) | |
| Age (years) | 1670 | 56.4 (10.8) |
| Body mass index (kg/m2) | 1670 | 26.8 (3.1) |
| Testosterone-level at baseline (ng/ml) | 1670 | 2.5 (1.1) |
| nb | % | |
| Smoker: Yes, current smoker | 1661 | 32.1 |
| Alcohol (yes: often/regularly) | 1660 | 11.9 |
| Diabetes mellitus (yes) | 1542 | 16.9 |
| Hypertension (yes) | 1578 | 34.2 |
| Cardiovascular conditions (yes) | 1533 | 12.0 |
| Chronic pulmonary conditions (yes) | 1504 | 8.1 |
| Tumour (yes) | 1527 | 9.0 |
na number of men who had no missings in certain variables which were used as independent variables for analysis; nb proportion of the total of 1670 men who provided information on a certain parameter.