Meta-analysis of relationship between testosterone and cardiovascular disease in healthy men.
| Studies | No | RR (95% CI) | p Value* |
| Total testosterone | 18 | 0.89 (0.83 to 0.96) | 0.00 |
| Age of study population <70 years | 7 | 1.01 (0.95 to 1.08) | 0.41 |
| Including men >70 years | 11 | 0.84 (0.76 to 0.92) | 0.00 |
| Year of publication before 1 January 2007 | 6 | 0.97 (0.94 to 1.00) | 0.08 |
| After 1 January 2007 | 5 | 0.77 (0.72 to 0.82) | 0.81 |
| Free testosterone | 7 | 0.88 (0.78 to 1.00) | 0.00 |
| Age of study population <70 years | 3 | 0.99 (0.90 to 1.09) | 0.11 |
| Including men >70 years | 4 | 0.84 (0.71 to 1.00) | 0.00 |
| Year of publication before 1 January 2007 | 2 | 0.95 (0.91 to 1.00) | 0.63 |
| After 1 January 2007 | 2 | 0.77 (0.72 to 0.82) | 0.65 |
| Bioavailable testosterone (men>70 years) | 3 | 0.74 (0.62 to 0.88) | 0.71 |
Estimated summary RRs are provided for a change of 1 SD of testosterone level (high vs low), with the help of random-effects model RRs (95% CI).
↵* p Value of heterogeneity.