Table 6.
Robson's 10-Group Classification of a selected group of Flemish women giving birth in 2008 and 2016: Cesarean section contribution per group (%).
| 2008 | 2016 | OR (95% CI) | |
|---|---|---|---|
| 1 | 3.31 | 2.53 (-0.78) | 1.322 (1.03-1.70) |
| 2a | 2.94 | 2.05 (-0.89) | 1.447 (1.10-1.90) |
| 2b | 2.08 | 1.15 (-0.93) | 1.833 (1.30-2.61) |
| 3 | 0.58 | 0.35 (-0.23) | 1.671 (0.87-3.31) |
| 4a | 0.47 | 0.35 (-0.12) | 1.371 (0.69-2.78) |
| 4b | 0.54 | 0.65 (+0.11) | 0.825 (0.47-1.45) |
| 5 | 6.42 | 5.81 (-0.61) | 1.112 (0.94-1.32) |
| 6 | 3.01 | 2.55 (-0.46) | 1.184 (0.92-1.53) |
| 7 | 1.56 | 1.69 (+0.13) | 0.927 (0.67-1.29) |
| 8 | 0.97 | 0.76 (-0.21) | 1.282 (0.81-2.05) |
| 9 | 0.19 | 0.22 (+0.03) | 0.857 (0.31-2.35) |
| 10 | 1.13 | 1.25 (+0.12) | 0.902 (0.61-1.33) |
Total absolute CS 23.20% 19.36%. Two-thirds of the decrease in CS rate between 2008 and 2016 is attributable to a drop in the absolute CS rate in Robson groups 1 and 2.