Regression coefficients, anal sphincter tears
| Weighted by number of births | Unweighted | |||||
|---|---|---|---|---|---|---|
| Estimate | 95% CI | p Value | Estimate | p Value | ||
| Analysis 1 (only intervention hospitals) | ||||||
| Intercept | 0.054 | 0.048 | 0.059 | <0.001 | 0.054 | <0.001 |
| Trend preintervention (per year) | −0.0025 | −0.004 | −0.001 | 0.044 | −0.003 | 0.019 |
| Immediate effect of intervention (change in level) | −0.021 | −0.030 | −0.013 | <0.001 | −0.024 | <0.001 |
| Change in trend postintervention (per year) | 0.000 | −0.004 | 0.005 | 0.899 | 0.002 | 0.449 |
| Analysis 2 (intervention and non-intervention hospitals) | ||||||
| Intercept | 0.044 | 0.042 | 0.046 | <0.001 | 0.035 | <0.001 |
| Trend preintervention (per year) | −0.0025 | −0.0030 | −0.0019 | <0.001 | −0.0018 | <0001 |
| Immediate effect of intervention (change in level) | −0.012 | −0.020 | −0.004 | 0.004 | −0.009 | 0.183 |
| Change in trend postintervention (per year) | −0.000 | −0.005 | 0.005 | 0.921 | 0.001 | 0.747 |
| Immediate effect of local interventions (change in level) | −0.004 | −0.007 | −0.000 | 0.043 | 0.001 | 0.683 |
| Change in trend postlocal interventions (per year) | 0.000 | NA | NA | NA | 0.000 | 0.235 |
Numbers in bold indicate p<0.05.