Iris de Nie

60 C H A P T E R 4 Table 3. Ejaculation frequency and prevalence of wearing tight undergarment and tucking in study cohort Percentage (n) Median (IQR) Ejaculation frequency Low ( < 6x/month) Average (6-12x/month) High ( > 12x/month) 27.4% (31) 36.3% (41) 36.3% (41) 10.0 (IQR 5.0-15.0) Wearing tight undergarment Never Sometimes Always 50.4% (57) 17.7% (20) 31.9% (36) Tucking Never Sometimes (1-8x/month) Often ( > 8x/month) Frequency (per month) Duration (hours per day) Last time (days ago) 77.0% (87) 14.1% (16) 8.9% (10) 5.0 (IQR 1.0-30.0) 6.5 (IQR 5.0-8.0) 12.0 (IQR 1.0-30.0) Table 4. Effect of ejaculation frequency, wearing tight undergarment and tucking on total motile sperm count Total motile sperm count < 5 x10 6 Univariable analysis OR (95% CI) Multivariable analysis^ OR (95% CI) Ejaculation frequency (per month) Average (6-12x) vs low ( < 6x) High ( > 12x) vs low ( < 6x) 1.11 (0.37-3.33) 0.73 (0.23-2.35) 1.72 (0.49-6.05) 0.78 (0.19-3.15) Wearing tight undergarment Sometimes vs never Always vs never 1.63 (0.43-6.19) 3.06 (1.11-8.49)* 1.40 (0.32-6.06) 2.89 (0.95-8.82) Tucking Sometimes (1-8x) vs never Often ( > 8) vs never 0.27 (0.03-2.19) 6.09 (1.54-24.01)* 0.47 (0.05-4.17) 7.95 (1.66-37.99)* ^Correction for demographic factors (age, BMI) + lifestyle factors (alcohol consumption, smoking, cannabis use) + medical history (previous hormone use, urological problems, anxiety and depression) *p-value < 0.05 using logistic regression analysis