| Table 2. Correlation between male general population characteristics and age. | |||||||
| Age Groups | Regression Analysis | ||||||
|---|---|---|---|---|---|---|---|
| Characteristics | Group 1 (≤35 years) | Group 2 (36-44 years) | Group 3 (≥45 years) | p | Correlation Coefficient r/OR | 95% Cl | p |
| Patients (n) | 852 | 1014 | 312 | ||||
| Age (years) (mean±SD) | 32.1±2.6 | 39.3±2.5 | 49.2±5.0 | ||||
| Father of at least one child (%) | 23.4 (199/852) | 34.4 (348/1014) | 53.5 (167/312) | <0.05 | OR: 1.08•• | 1.06 to 1.09 | <0.0001 |
| Duration of infertility (years) (mean±SD) | 3.1±1.1 | 4.4±2.1 | 5.6±3.3 | <0.05 | r: 0.26• | 0.21 to 0.29 | <0.0001 |
| BMI (mean±SD) | 28.6 ± 4.3 | 28.5 ± 4.3 | 28.4±4.2 | 0.83 | r: 0.03• | -0.07 to 0.02 | 0.25 |
| Smoking (%) | 11.5 (98/852) | 11.0 (112/1014) | 10.6 (33/312) | 0.22 | OR:0.99•• | 0.97 to 1.01 | 0.45 |
| Regular drinking (%) | 68.9 (587/852) | 65.7 (666/1014) | 67.3 (210/312) | 0.33 | OR:0.99•• | 0.98 to 1.01 | 0.95 |
| Vitamin supplement use (%) | 16.5 (14/852) | 16.0 (162/1014) | 19.6 (61/312) | 0.39 | OR: 1.01•• | 0.99 to 1.03 | 0.12 |
| Varicocele (%) | 14.7 (125/852) | 17.6 (178/1014) | 14.7 (46/312) | 0.19 | OR: 1.00•• | 0.98 to 1.01 | 0.84 |
| Sexual abstinence (days) (mean±SD) | 3.4±1.0 | 3.5±1.8 | 3.6±1.6 | 0.58 | r:0.03 | -0.02 to 0.07 | 0.23 |
| * Spearman’s correlation; ** logistic regression; r, Spearman’s rank correlation coefficient; OR, odds ratio; CI, Confidence Interval. | |||||||