Table 1 Sociodemographic characteristics of study participants
All couples | P value d | Fertility (N = 324) | Infertilitya (N = 14) | P valued | ||||
|---|---|---|---|---|---|---|---|---|
N = 2177 | Fertility (N = 1484) | Infertilitya (N = 355) | ||||||
nb | % | nb (%) | nb(%) | nb(%) | nb(%) | |||
Age, years, women | ||||||||
20–24 | 133 | 6.11 | 92 (6.23) | 19 (5.35) | < 0.001 | 21 (6.50) | 1 (7.14) | 0.038 |
25–29 | 1096 | 50.34 | 818 (55.38) | 153 (43.10) | 112 (34.67) | 4 (28.57) | ||
30–34 | 743 | 34.13 | 475 (32.16) | 137 (38.59) | 124 (38.39) | 4 (28.57) | ||
35–39 | 176 | 8.08 | 84 (5.69) | 38 (10.70) | 58 (17.96) | 3 (21.43) | ||
≥ 40 | 29 | 1.33 | 8 (0.54) | 8 (2.25) | 8 (2.48) | 2 (14.29) | ||
Age, years, men | ||||||||
20–24 | 55 | 2.79 | 38 (2.96) | 6 (1.99) | 0.002 | 9 (3.02) | 1 (8.33) | 0.631 |
25–29 | 715 | 36.31 | 526 (41.03) | 97 (32.12) | 88 (29.53) | 2 (16.67) | ||
30–34 | 782 | 39.72 | 533 (41.58) | 126 (41.72) | 111 (37.25) | 5 (41.67) | ||
35–39 | 328 | 16.66 | 142 (11.15) | 55 (18.21) | 62 (20.81) | 2 (16.67) | ||
≥ 40 | 89 | 4.52 | 42 (3.28) | 18 (5.96) | 27 (0.34) | 2 (16.67) | ||
BMIc kg/m2, women | ||||||||
< 18.5 | 37 | 2.03 | 180 (14.42) | 35 (11.36) | < 0.001 | 40 (13.70) | 2 (15.38) | 0.905 |
18.5–23.9 | 1022 | 56.18 | 939 (75.24) | 202 (65.58) | 213 (72.95) | 10 (76.92) | ||
24–26.9 | 545 | 29.96 | 105 (8.41) | 47 (15.26) | 29 (9.93) | 1 (7.69) | ||
≥ 27 | 215 | 11.82 | 24 (1.92) | 24 (7.79) | 10 (3.42) | 0 | ||
BMIc kg/m2, men | ||||||||
< 18.5 | 37 | 2.03 | 24 (2.00) | 11 (3.65) | 0.008 | 2 (0.69) | 0 | 0.792 |
18.5–23.9 | 1022 | 56.18 | 691 (57.44) | 142 (47.18) | 175 (60.14) | 8 (66.67) | ||
24–26.9 | 545 | 29.96 | 342 (28.43) | 101 (33.55) | 93 (31.96) | 4 (33.33) | ||
≥ 27 | 215 | 11.82 | 146 (12.14) | 47 (15.61) | 21 (7.22) | 0 | ||
Occupation, women | ||||||||
Employed | 1768 | 90.95 | 1210 (92.30) | 284 (91.91) | 0.950 | 256 (85.62) | 11 (84.62) | 0.343 |
Self-employed | 84 | 4.32 | 46 (3.51) | 12 (3.88) | 21 (7.02) | 2 (15.38) | ||
Unemployed | 92 | 4.73 | 55 (4.20) | 13 (4.21) | 22 (7.36) | 0 | ||
Education attainment, women | ||||||||
High school or low | 119 | 6.08 | 65 (4.95) | 26 (8.33) | 0.039 | 24 (7.82) | 4 (30.77) | 0.016 |
Junior college or university | 1534 | 78.39 | 1029 (78.37) | 243 (77.88) | 244 (79.48) | 8 (61.54) | ||
Graduate or above | 304 | 15.53 | 219 (16.68) | 43 (13.78) | 39 (12.70) | 1 (7.69) | ||
Education attainment, men | ||||||||
High school or low | 110 | 5.69 | 58 (4.46) | 20 (6.60) | 0.106 | 28 (9.157) | 4 (30.77) | 0.030 |
Junior college or university | 1471 | 76.10 | 1002 (77.14) | 239 (78.88) | 214 (69.93) | 8 (61.54) | ||
Graduate or above | 352 | 18.21 | 239 (18.40) | 44 (14.52) | 64 (20.92) | 1 (7.69) | ||
Average monthly incomes (¥) of each couple | ||||||||
< 10,000 | 117 | 6.35 | 61 (4.94) | 27 (9.41) | 0.012 | 27 (9.15) | 1 (7.69) | 0.903 |
10,000–20,000 | 424 | 23.02 | 299 (24.21) | 62 (21.60) | 58 (19.66) | 2 (15.38) | ||
> 20,000 | 1301 | 70.63 | 875 (70.85) | 198 (68.99) | 210 (71.19) | 10 (76.92) | ||