Total | Caesarean section | % | Risk difference % (95% CI) | P value* | |
Population controls | 575 763 | 89 840 | 15.6 | ||
axSpA, total | 312 | 70 | 22.4 | 6.8 (2.6 to 11.8) | 0.001 |
Active axSpA† | 114 | 27 | 23.7 | 8.1 (1.2 to 16.7) | 0.024 |
Inactive axSpA† | 131 | 24 | 18.3 | 2.7 (−3.0 to 10.2) | 0.46 |
PsA, total | 121 | 37 | 30.6 | 15.0 (7.5 to 23.7) | <0.001 |
Active PsA† | 27 | 9 | 33.3 | 17.7 (3.0 to 36.6) | 0.028‡ |
Inactive PsA† | 64 | 20 | 31.3 | 15.7 (5.6 to 27.8) | 0.001 |
p-values in bold are statistically significant values
*P value for patient group compared with population controls.
†In third trimester.
‡Fisher’s exact test.
axSpA, axial spondyloarthritis; PsA, psoriatic arthritis.