Table 1.
Comparison of Clinical and Demographic Variables Between Infertile and Fertile Groups.
| Infertile, n = 67; M ± SD (range) | Fertile, n = 24; M ± SD (range) | Test statistic value | p a | |
|---|---|---|---|---|
| Age (year) | 32.4 ± 5.2 (24-54) | 36.2 ± 5.9 (30-54) | t(df = 89) = −2.97 | .01 |
| Weight (lb) | 204.6 ± 47.6 (154-415) | 205.3 ± 37.0 (155-308) | t(df = 88) = −0.06 | .95 |
| Height (in.) | 71.1 ± 3.5 (60-77) | 71.0 ± 2.6 (67-75) | t(df = 88) = 0.08 | .93 |
| BMI | 28.5 ± 6.3 (20.0-57.9) | 28.5 ± 4.4 (23.6-41.8) | t(df = 89) = −0.05 | .96 |
| Right testicular volume (cm3) | 18.3 ± 7.6 (2.5-37.4) | 22.6 ± 5.6 (12.1-35.3) | t(df = 89) = −2.52 | .01 |
| Left testicular volume (cm3) | 18.4 ± 7.7 (2.3-45.8) | 22.3 ± 5.5 (11.0-32.1) | t(df = 89) = −2.28 | .01 |
| Infertile, n = 67; n (%) | Fertile, n = 24; n (%) | |||
| Epididymal cysts | χ2(df = 1) = 0.362 | .55 | ||
| No (n = 26) | 18 (26.9) | 8 (33.3) | ||
| Yes (n = 65) | 49 (73.1) | 16 (66.7) | ||
| Varicocele | χ2(df = 1) = 5.766 | .02 | ||
| No (n = 38) | 23 (34.3) | 15 (62.5) | ||
| Yes (n = 53) | 44 (65.7) | 9 (37.5) | ||
| Hydrocele | χ2(df = 1) = 0.412 | .52 | ||
| No (n = 58) | 44 (65.7) | 14 (58.3) | ||
| Yes (n = 33) | 23 (34.3) | 10 (41.7) | ||
| Smoker | NA | 1.00 | ||
| No (n = 73) | 54 (80.6) | 19 (82.6) | ||
| Yes (n = 17) | 13 (19.4) | 4 (17.4) | ||
| Alcohol use | NA | .03 | ||
| No (n = 68) | 46 (68.7) | 22 (91.7) | ||
| Yes (n = 23) | 21 (31.3) | 2 (8.3) | ||
| Having college or higher degree | χ2(df = 1) = 0.019 | .89 | ||
| No (n = 27) | 20 (35.1) | 7 (36.8) | ||
| Yes (n = 49) | 37 (64.9) | 12 (63.2) |
Note. BMI = body mass index.
a
p-values were based on two-sample two-tailed t tests for continuous variables, and chi-square or Fisher’s exact tests for categorical variables.
p < 0.05 was reported as statistically significant and indicated by bold font.