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| Frequency of ejaculation (per month) | ||||||||||||||
| 1 - 5 | 6 - 10 | 11 - 15 | 16 - 20 | χ2 | P-value | Mean | ±sd | t-test | P-value | |||||||
| Freq. | % | Freq. | % | Freq. | % | Freq. | % | |||||||||
| All | 19 | 20.0 | 29 | 30.5 | 34 | 35.8 | 13 | 13.7 | - | - | 9.7 | 4.4 | - | - | ||
| Age | <40 | 5 | 26.3 | 9 | 31.0 | 19 | 55.9 | 6 | 46.2 | 6.14 | 0.10 | 10.8 | 3.8 | 2.20 | 0.02 | |
| ≥40 | 14 | 73.7 | 20 | 69.0 | 15 | 44.1 | 7 | 53.8 | 8.9 | 4.6 | ||||||
| BMI | 18.5 - 24.9 | 7 | 36.8 | 6 | 20.7 | 12 | 35.2 | 4 | 30.8 | 3.99 | 0.68 | 9.5 | 4.6 | 0.24* | 0.79 | |
| 25.0 - 29.9 | 7 | 36.8 | 16 | 55.2 | 11 | 32.4 | 5 | 38.4 | 9.4 | 4.3 | ||||||
| ≥30 | 5 | 26.4 | 7 | 24.1 | 11 | 32.4 | 4 | 30.8 | 10.1 | 4.4 | ||||||
| Occupation | Professional | 7 | 36.8 | 8 | 27.6 | 9 | 26.5 | 3 | 23.1 | 19.19 | 0.57 | 9.1 | 4.2 | 1.10 | 0.37 | |
| Technical | 2 | 10.5 | 4 | 13.8 | 2 | 5.9 | 1 | 7.7 | 8.8 | 5.7 | ||||||
| Management | 0 | 0.0 | 2 | 6.9 | 3 | 8.8 | 1 | 7.7 | 11.7 | 2.7 | ||||||
| Entrepreneur | 6 | 31.5 | 11 | 37.9 | 13 | 38.2 | 7 | 53.9 | 10.1 | 4.3 | ||||||
| Civil servants | 4 | 21.1 | 1 | 3.5 | 4 | 11.8 | 0 | 0.0 | 7.4 | 4.6 | ||||||
| Farmer | 0 | 0.0 | 0 | 0.0 | 2 | 5.9 | 0 | 0.0 | 12.0 | 0.0 | ||||||
| Military | 0 | 0.0 | 1 | 3.5 | 1 | 2.9 | 1 | 7.7 | 13.3 | 6.1 | ||||||
| Clergy | 0 | 0.0 | 2 | 6.9 | 0 | 0.0 | 0 | 0.0 | 8.0 | 0.0 | ||||||
| Years trying to conceive | <1 | 2 | 10.5 | 2 | 6.9 | 5 | 14.7 | 0 | 0.0 | 19.13 | 0.09 | 9.4 | 3.6 | 2.30 | 0.06 | |
| 1 - 3 | 3 | 15.8 | 6 | 20.7 | 14 | 41.2 | 5 | 38.5 | 11.1 | 3.5 | ||||||
| 4 - 6 | 2 | 10.5 | 10 | 34.5 | 7 | 20.6 | 2 | 15.4 | 9.8 | 3.9 | ||||||
| 7 - 9 | 4 | 21.1 | 3 | 10.3 | 5 | 14.7 | 4 | 30.8 | 10.1 | 4.9 | ||||||
| ≥10 | 8 | 42.1 | 8 | 27.6 | 3 | 8.8 | 2 | 15.4 | 7.4 | 5.1 | ||||||
| DFI | <25 | 5 | 26.3 | 16 | 55.2 | 12 | 35.3 | 6 | 46.1 | 4.70 | 0.20 | 9.9 | 4.2 | 0.44 | 0.33 | |
| ≥25 | 14 | 73.7 | 13 | 44.8 | 22 | 64.7 | 7 | 53.9 | 9.5 | 4.5 | ||||||
| Miscarriage in partner | Yes | 8 | 42.1 | 8 | 27.6 | 13 | 38.2 | 5 | 38.5 | 1.31 | 0.73 | 9.6 | 4.5 | −010 | 0.49 | |
| No | 11 | 57.9 | 21 | 72.4 | 21 | 61.8 | 8 | 61.5 | 9.7 | 4.4 | ||||||
| History of infertility | Yes | 19 | 100.0 | 28 | 96.6 | 31 | 91.2 | 13 | 100.0 | 3.24 | 0.36 | 9.6 | 4.4 | −1.28 | 0.13 | |
| No | 0 | 0.0 | 1 | 3.4 | 3 | 8.8 | 0 | 0.0 | 11.0 | 2.0 | ||||||
| Type of infertility | None | 0 | 0.0 | 1 | 3.5 | 3 | 8.8 | 0 | 0.0 | 6.31 | 0.39 | 11.0 | 2.0 | 0.47 | 0.63 | |
| Primary | 8 | 42.1 | 9 | 31.0 | 17 | 50.0 | 6 | 46.2 | 10.0 | 4.5 | ||||||
| Secondary | 11 | 57.9 | 19 | 65.5 | 14 | 41.2 | 7 | 53.8 | 9.3 | 4.4 | ||||||
| Ever fathered a child | Yes | 7 | 36.8 | 16 | 55.2 | 9 | 326.5 | 2 | 15.4 | 8.39 | 0.04 | 8.8 | 4.0 | −1.45 | 0.08 | |
| No | 12 | 63.2 | 13 | 44.8 | 25 | 73.5 | 11 | 84.6 | 10.1 | 4.5 | ||||||
| Social habits | Smoking | Never | 15 | 79.0 | 24 | 82.8 | 31 | 91.2 | 11 | 84.6 | 6.71 | 0.67 | 9.8 | 4.2 | 0.64 | 0.59 |
| 1 - 5 sticks daily | 2 | 10.5 | 3 | 10.3 | 3 | 8.8 | 1 | 7.7 | 9.0 | 4.6 | ||||||
| 6 - 10 sticks daily | 1 | 5.3 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 4.0 | 0.0 | ||||||
| >10 sticks daily | 1 | 5.3 | 2 | 6.9 | 0 | 0.0 | 1 | 7.7 | 9.8 | 7.2 | ||||||
| Alcohol intake | Never | 7 | 36.8 | 12 | 41.4 | 10 | 29.4 | 7 | 53.9 | 10.79 | 0.29 | 9.9 | 4.5 | 0.14 | 0.94 | |
| Rarely | 2 | 10.5 | 0 | 0.0 | 5 | 14.7 | 1 | 7.7 | 9.9 | 5.4 | ||||||
| Occasionally | 9 | 47.4 | 11 | 37.9 | 12 | 35.3 | 5 | 38.5 | 9.3 | 4.7 | ||||||
| Commonly | 1 | 5.3 | 6 | 20.7 | 7 | 20.6 | 0 | 0.0 | 9.7 | 2.6 | ||||||
| Herbal medication use | Never | 11 | 57.9 | 2 | 72.4 | 25 | 73.5 | 8 | 61.5 | 17.65 | 0.04 | 9.8 | 4.1 | 0.45 | 0.72 | |
| Rarely | 2 | 10.5 | 0 | 0.0 | 3 | 8.8 | 0 | 0.0 | 12.0 | 5.7 | ||||||
| Occasionally | 6 | 31.6 | 7 | 24.1 | 6 | 17.7 | 4 | 30.8 | 9.3 | 5.1 | ||||||
| Commonly | 0 | 0.0 | 1 | 3.5 | 0 | 0.0 | 1 | 7.7 | 8.2 | 5.4 | ||||||