Table 3. Impact of socioeconomic factors on desired fertility: Generalized poisson regression model analysis (N = 2,516).
| Variable | Univariate analysisa | Multivariate analysis | ||
|---|---|---|---|---|
| IRRb (95% CI) | P-value | IRRb (95% CI) | P-value | |
| Constant | 3.7095 (1.8887–5.6260) | <0.0001 | ||
| Age(Year) | 1.0199 (1.0157–1.0241) | <0.0001 | 1.0001 (0.9921–1.0082) | 0.9753 |
| Age at first marriage (Year) | 0.9490 (0.9362–0.9620) | <0.0001 | 0.9861 (0.9705–1.0019) | 0.0849 |
| Education | ||||
| Elementary or below(Ref.) | 1 | 1 | ||
| Middle school | 0.7704 (0.7133–0.8321) | <0.0001 | 1.012 (0.9075–1.1283) | 0.8309 |
| High school or above | 0.8732 (0.8142–0.9364) | 0.0001 | 1.0331 (0.9389–1.1367) | 0.5049 |
| Number of siblings (Person) | 1.0689 (1.0501–1.0881) | <0.0001 | 1.0195 (0.9971–1.0424) | 0.0880 |
| Women’s income (10,000 CNY/Year) | 0.9233 (0.8983–0.9492) | <0.0001 | 0.9596 (0.9325–0.9875) | 0.0490 |
| Direct cost of child (10,000 CNY/Year) | 0.9100 (0.8936–0.9266) | <0.0001 | 0.9707 (0.9459–0.9961) | 0.0243 |
| Social security (CNY/Month) | 0.9940 (0.9930–0.9950) | <0.0001 | 0.9963 (0.9951–0.9975) | <0.0001 |
| Traditional culture | ||||
| Weakly influenced(Ref.) | 1 | 1 | ||
| Moderately influenced | 1.4830 (1.338–1.6438) | 0.0013 | 1.165 (1.0366–1.3092) | 0.0104 |
| Deeply influenced | 1.6711(1.4905–1.8737) | <0.0001 | 1.183 (1.0286–1.3608) | 0.0185 |
aUnivariate analysis: Each variable is included separately in regression model
bIRR: Incidence rate ratio