TABLE 3.
Unadjusted and adjusted a hazard ratios (HRs) for the association between levels of life stress or emotional distress during pregnancy and the rate of giving birth, in sub‐intervals of gestational age
| 27–33 weeks | 34–36 weeks | 37–38 weeks | 39–41 weeks | 42–45 weeks | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Unadjusted HR (95% CI) | Adjusted HR (95% CI) | Unadjusted HR (95% CI) | Adjusted HR (95% CI) | Unadjusted HR (95% CI) | Adjusted HR (95% CI) | Unadjusted HR (95% CI) | Adjusted HR (95% CI) | Unadjusted HR (95% CI) | Adjusted HR (95% CI) | |
| Life stress | ||||||||||
| None | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) |
| Low | 0.94 (0.71,1.24) | 0.92 (0.69, 1.23) | 1.02 (0.91, 1.14) | 1.04 (0.93, 1.17) | 1.07 (1.02, 1.13) | 1.07 (1.02, 1.13) | 1.03 (1.00, 1.05) | 1.02 (0.99, 1.04) | 1.01 (0.95, 1.08) | 1.01 (0.95, 1.08) |
| Moderate | 1.29 (1.01, 1.62) | 1.27 (0.99, 1.63) | 1.08 (0.97, 1.19) | 1.13 (1.02, 1.25) | 1.09 (1.04, 1.15) | 1.07 (1.02, 1.13) | 1.05 (1.03, 1.07) | 1.03 (1.01, 1.05) | 1.09 (1.03, 1.16) | 1.09 (1.03, 1.16) |
| High | 1.37 (1.04, 1.79) | 1.38 (1.04, 1.84) | 1.06 (0.95, 1.20) | 1.10 (0.97, 1.25) | 1.26 (1.19, 1.32) | 1.21 (1.15, 1.28) | 1.08 (1.05, 1.10) | 1.05 (1.02, 1.08) | 1.01 (0.94, 1.08) | 1.00 (0.93, 1.08) |
| Emotional distress | ||||||||||
| None | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) |
| Low | 0.89 (0.67, 1.19) | 0.89 (0.66, 1.19) | 1.05 (0.94, 1.18) | 1.03 (0.91, 1.16) | 0.99 (0.93, 1.04) | 0.98 (0.93, 1.03) | 0.99 (0.97, 1.01) | 0.98 (0.96, 1.00) | 1.04 (0.97, 1.11) | 1.03 (0.96, 1.10) |
| Moderate | 1.13 (0.84, 1.52) | 1.12 (0.83, 1.52) | 1.09 (0.96, 1.24) | 1.06 (0.93, 1.20) | 1.03 (0.98, 1.09) | 1.02 (0.96, 1.08) | 1.00 (0.98, 1.03) | 0.99 (0.97, 1.02) | 1.02 (0.95, 1.10) | 1.02 (0.94, 1.10) |
| High | 1.41 (1.06, 1.89) | 1.38 (1.02, 1.86) | 1.09 (0.95, 1.24) | 1.05 (0.91, 1.19) | 1.14 (1.08, 1.21) | 1.11 (1.04, 1.17) | 1.03 (1.01, 1.06) | 1.01 (0.99, 1.04) | 1.08 (1.00, 1.17) | 1.07 (0.99, 1.16) |
a
Adjusted for mother's age, education level, having a partner, parity, fertility treatment, non‐communicable diseases, infections and the child's congenital anomalies.