Table 2.
Logistic regression analysis between non-fertility group and fertility group.
| Variables | Non-fertility group (n = 5062) | Fertility group (n = 5969) | Binary logistic regression OR (95% CI) | Binary logistic regression P value |
|---|---|---|---|---|
| Gender | ||||
| Female | 2825 (55.8) | 3173 (53.2) | Reference | |
| Male | 2237 (44.2) | 2796 (46.8) | 0.60 (0.54–0.68) | <0.01 |
| Age group, year | ||||
| ≤25 | 3040 (60.0) | 47 (0.8) | Reference | |
| 26-40 | 1762 (34.8) | 1548 (25.9) | 16.0 (13.4–19.1) | <0.01 |
| 41-60 | 195 (3.9) | 3292 (55.2) | 233.8 (186.7–292.6) | <0.01 |
| >60 | 65 (1.3) | 1082 (18.1) | 105.8 (77.1–144.6) | <0.01 |
| Region | ||||
| Eastern China | 2562 (50.6) | 3049 (51.1) | ||
| Central China | 1298 (25.6) | 1553 (26.0) | ||
| Western China | 1202 (23.8) | 1367 (22.9) | ||
| Resident place | ||||
| Rural | 1335 (26.4) | 1688 (28.3) | ||
| Urban | 3727 (73.6) | 4281 (71.7) | ||
| Per capita monthly household income | ||||
| ≤6000 | 3368 (66.5) | 4132 (69.2) | ||
| 6001-12000 | 1306 (25.8) | 1463 (24.5) | ||
| >12,000 | 388 (7.7) | 374 (6.3) | ||
| Political status | ||||
| The masses | 1551 (30.6) | 4108 (68.8) | Reference | |
| Non-partisans | 38 (0.7) | 108 (1.8) | 0.73 (0.43–1.24) | 0.25 |
| Partisans | 3473 (68.6) | 1753 (29.4) | 0.48 (0.42–0.54) | <0.01 |
| Highest educational level | ||||
| Primary school or below | 480 (9.5) | 2086 (34.9) | Reference | |
| Middle school | 718 (14.2) | 1260 (21.1) | 0.21 (0.17–0.26) | <0.01 |
| College degree or above | 3864 (76.3) | 2623 (44.0) | 0.09 (0.08–0.11) | <0.01 |
| Whether having chronic disease | ||||
| No | 4777 (94.4) | 4207 (70.5) | Reference | |
| Yes | 285 (5.6) | 1762 (29.5) | 1.95 (1.60–2.38) | <0.01 |
| Depression | ||||
| No depression | 2095 (41.4) | 2936 (49.2) | Reference | |
| Mild depression | 1741 (34.4) | 2060 (34.5) | 0.63 (0.56–0.72) | <0.01 |
| Moderate depression | 612 (12.1) | 536 (9.0) | 0.43 (0.36–0.53) | <0.01 |
| Moderate to severe depression | 464 (9.2) | 339 (5.7) | 0.45 (0.35–0.57) | <0.01 |
| Severe depression | 150 (2.9) | 98 (1.6) | 0.50 (0.33–0.74) | <0.01 |
| Anxiety | ||||
| No anxiety | 2667 (52.7) | 3503 (58.7) | ||
| Mild anxiety | 1574 (31.1) | 1790 (30.0) | ||
| Moderate anxiety | 642 (12.7) | 556 (9.3) | ||
| Severe anxiety | 179 (3.5) | 120 (2.0) | ||
| Pressure | ||||
| Mild pressure | 1217 (24.0) | 1502 (25.2) | ||
| Moderate pressure | 3522 (69.6) | 4131 (69.2) | ||
| Severe pressure | 323 (6.4) | 336 (5.6) | ||