Table 4. Associations of low and high rates in induction of labor in MCNs with primary outcomes, in comparison with MCNs with a moderate induction of labor rate in (multilevel modelling).
| OR (95% CI) Q1 (low) |
p-value | OR (95% CI) Q4 (high) |
p-value | variance | |
|---|---|---|---|---|---|
| UNPLANNED CAESAREAN SECTION | |||||
| crude OR | |||||
| (no modelling) | 0.84 (0.81–0.87) | < 0.001 | 1.07 (1.03–1.11) | < 0.001 | NA |
| 1.Empty model | |||||
| (fixed effect multilevel, no confounders) | 0.83 (0.72–0.95) | 0.006 | 1.02 (0.89–1.17) | 0.777 | 0.053 |
| 2.Sociodemographic confounders | |||||
| 2a: model 1 + SES and Ethnic background | 0.83 (0.72–0.95) | 0.008 | 1.01 (0.88–1.16) | 0.885 | 0.057 |
| 2b: model 1 + SES and Ethnic background + maternal age | 0.82 (0.71–0.95) | 0.007 | 1.01 (0.88–1.17) | 0.874 | 0.061 |
| 3.Sociodemographic + pregnancy characteristics | |||||
| 3a: model 2b + pregnancy complications | 0.83 (0.72–0,96) | 0.010 | 0.99 (0.88–1.16) | 0.896 | 0.062 |
| 3b: model 2b + macrosomia (birthweight ≥ 4500g) | 0.82 (0.71–0.95) | 0.006 | 1.02 (0.89–1.18) | 0.747 | 0.062 |
| 3c: model 2b + pregnancy complications + macrosomia | 0.83 (0.72–0.95) | 0.009 | 1.00 (0.87–1.16) | 0.967 | 0.062 |
| MATERNAL COMPOSITE | |||||
| crude OR | |||||
| (no modelling) | 0.92 (0.90–0.94) | < 0.001 | 1.02 (0.998–1.05) | 0.073 | NA |
| 1.Empty model | |||||
| (fixed effect multilevel, no confounders) | 0.93 (0.85–1.01) | 0.103 | 1.03 (0.94–1.12) | 0.526 | 0.023 |
| 2.Sociodemographic confounders | |||||
| 2a: model 1 + SES and Ethnic background | 0.93 (0.85–1.01) | 0.087 | 1.03 (0.94–1.12) | 0.513 | 0.023 |
| 2b: model 1 + SES and Ethnic background + maternal age | 0.92 (0.84–1.01) | 0.068 | 1.03 (0.94–1.13) | 0,473 | 0.024 |
| 3.Sociodemographic + pregnancy characteristics | |||||
| 3a: model 2b + pregnancy complications | 0.92 (0.84–1.01) | 0.085 | 1.02 (0.94–1.12) | 0.608 | 0.025 |
| 3b: model 2b + macrosomia (birthweight ≥ 4500g) | 0.92 (0.84–1.01) | 0.069 | 1.04 (0.95–1.14) | 0.387 | 0.024 |
| 3c: model 2b + pregnancy complications + macrosomia | 0.92 (0.84–1.01) | 0.085 | 1.03 (0.94–1.13) | 0.508 | 0.025 |
| NEONATAL COMPOSITE | |||||
| crude OR | |||||
| (no modelling) | 0.93 (0.84–1.04) | 0.210 | 1.14 (1.03–1.28) | 0.016 | NA |
| 1.Empty model | |||||
| (fixed effect multilevel, no confounders) | 0.999 (0.67–1.50) | 0.998 | 0.97 (0.64–1.47) | 0.869 | 0.501 |
| 2.Sociodemographic confounders | |||||
| 2a: model 1 + SES and Ethnic background | 1.01 (0.67–1.52) | 0.967 | 0.96 (0.63–1.47) | 0.864 | 0.500 |
| 2b: model 1 + SES and Ethnic background + maternal age | 1.01 (0.67–1.52) | 0.971 | 0.99 (0.63–1.47) | 0.870 | 0.494 |
| 3.Sociodemographic including NICU availability | |||||
| 3: model 2b + NICU availability | 0.96 (0.76–1.22) | 0.748 | 0.86 (0.67–1.10) | 0.220 | 0.124 |
| 4.Sociodemographic + pregnancy characteristics | |||||
| 4a: model 3 + pregnancy complications | 0.96 (0.76–1.22) | 0.757 | 0.86 (0.67–1.10) | 0.218 | 0.124 |
| 4b: model 3 + SGA (birthweight <p3) | 0.97 (0.77–1.22) | 0.761 | 0.86 (0.67–1.09) | 0.215 | 0.123 |
| 4c: model 3 + SGA + pregnancy complications | 0.97 (0.77–1.22) | 0.769 | 0.86 (0.67–1.09) | 0.212 | 0.123 |
OR: odds ratio; CI: confidence interval