Table 4.
Robson Categories by Care Group Comparisons (N = 96,810)
| Interprofessional Care Groupa |
Non-interprofessional Care Groupb |
|||||||
|---|---|---|---|---|---|---|---|---|
| Robson Category | Participants n (%)c | Cesareans n (%)d | Absolute Contribution to Overall Cesarean Rate %e | Relative Contribution to Overall Cesarean Rate %f | Participants n (%)c | Cesareans n (%)d | Absolute Contribution to Overall Cesarean Rate %e | Relative Contribution to Overall Cesarean Rate %f |
| 1 | 10,581 (21.7) | 1809 (17.1) | 3.7 | 14.2 | 6070 (12.7)g | 987 (16.3) | 2.1g | 6.2g |
| 2 | 5429 (11.1) | 2265 (41.7) | 4.7 | 17.9 | 11,198 (23.4)g | 4212 (37.6)g | 8.8g | 26.3g |
| 2a | 4929 (10.2) | 1765 (35.8) | 3.6 | 13.9 | 10,022 (20.9)g | 3036 (30.3) | 6.3g | 19.0g |
| 2b | 500 (1.0) | 500 (100) | 1.0 | 3.9 | 1176 (2.5) | 1176 (100) | 2.5 | 7.3g |
| 3 | 15,446 (31.6) | 453 (2.9) | 0.9 | 3.6 | 8043 (16.8)g | 284 (3.5) | 0.6g | 1.8g |
| 4 | 5133 (10.5) | 703 (13.7) | 1.4 | 5.5 | 7989 (16.7)g | 975 (12.2) | 2.0g | 6.1 |
| 4a | 4830 (10.0) | 373 (7.7) | 0.8 | 2.9 | 7510 (15.7) | 496 (6.6) | 1.0 | 3.1 |
| 4b | 330 (0.68) | 330 (100) | 0.7 | 2.6 | 479 (1.0) | 479 (100) | 1.0 | 3.0 |
| 5 | 5311 (10.9) | 3919 (73.8) | 8.1 | 30.9 | 5697 (11.9)g | 4849 (85.1)g | 10.1g | 30.3 |
| 6 | 746 (1.5) | 731 (98.0) | 1.5 | 5.8 | 769 (1.6) | 764 (99.4) | 1.6 | 4.8g |
| 7 | 742 (1.5) | 701 (94.5) | 1.4 | 5.5 | 620 (1.3) | 596 (96.1) | 1.2 | 3.7g |
| 8 | 979 (2.0) | 638 (65.2) | 1.3 | 5.0 | 1314 (2.7)g | 972 (74.0)g | 2.0g | 6.1g |
| 9 | 34 (0.1) | 34 (100) | 0.1 | 0.3 | 64 (0.1) | 63 (98.4) | 0.1 | 0.4 |
| 10 | 4121 (8.4) | 1414 (34.3) | 2.9 | 11.2 | 6068 (12.7)g | 2318 (38.2)g | 4.8g | 14.5g |
| Total | 48,522h | 12,667 (26.1) | 26.0 | 99.9i | 47,832h | 16,020 (33.5)g | 33.3 | 100.3i |
Interprofessional group includes centers with midwifery presence.
Non-interprofessional group includes centers without midwifery presence.
Percentage = number of women in the group ÷ total number of women who gave birth in the setting × 100.
Percentage = number of cesareans in the group ÷ total number of women in the group × 100.
Percentage = number of cesareans in the group ÷ total number of women who gave birth in the setting × 100.
Percentage = number of cesareans in the group ÷ total number of cesareans in the setting × 100.
Statistically significant differences, P < .001.
Births not classified because of missing data: interprofessional, n = 335 (0.69%), non-interprofessional, n = 121 (0.25%), accounting for differences in total births in table (n = 96,354) and total births in sample (N = 96,810).
Total percentages may not add up because of rounding.