Percentage of caesareans observed and expected by hospitals
| Hospital | Births | Caesareans observed (%) | Caesareans expected (%) | Relative risk | 95% CI RR |
| A | 2 928 | 469 (16.01) | 456 (15.56) | 1.03 | 0.97,1.08 |
| B | 3 131 | 456 (14.56) | 346 (11.05) | 1.32 | 1.26,1.38 |
| C | 1 817 | 317 (17.44) | 226 (12.45) | 1.40 | 1.31,1.49 |
| D | 13 424 | 2593 (19.31) | 2992 (22.28) | 0.87 | 0.84,0.89 |
| E | 1 502 | 255 (16.97) | 163 (10.86) | 1.56 | 1.47,1.65 |
| F | 2 348 | 359 (15.28) | 315 (13.40) | 1.14 | 1.07,1.21 |
| G | 533 | 130 (24.39) | 116 (21.77) | 1.12 | 1.01,1.23 |
| H | 2 391 | 371 (15.51) | 512 (21.42) | 0.72 | 0.66,0.78 |
| I | 1 457 | 223 (15.30) | 244 (16.76) | 0.91 | 0.84,0.98 |
| J | 4 161 | 613 (14.73) | 456 (10.96) | 1.34 | 1.28,1.40 |
| K | 1 332 | 202 (15.16) | 162 (12.12) | 1.25 | 1.16,1.34 |
| Total | 35 024 | 5988 (17.09) | 5988 (17.09) | — | — |
The registry number corresponds to the cases with complete information for all the variables of interest; RR: relative risk; 95% CI: confidence intervals of 95%. 1795 cases excluded because of missing data in some of the variables used in the model.