PrePROBE (2004–2007) | Early postPROBE (2008–2011) | Late postPROBE (2012–2015) | p-value | |
---|---|---|---|---|
Number of deliveries | 11,064 | 11,122 | 11,667 | |
Induction of labor, n (%) | 1248 (11.3) | 1411 (12.7) | 1781 (15.2) | < 0.001 |
Non-instrumental vaginal delivery, n (%) | 8169 (73.8) | 8785 (79.0) | 9620 (82.4) | < 0.001 |
Cesarean section, n (%) | 1881 (17.0) | 1560 (14.0) | 1322 (11.3) | < 0.001 |
Vacuum extraction, n (%) | 1014 (9.2) | 777 (7.0) | 725 (6.2) | < 0.001 |
Anal sphincter injury, n (%) | 401 (3.6) | 286 (2.6) | 278 (2.4) | < 0.001 |
Number of shoulder dystocia, n (per 1000 deliveries) | 11 (1.0) | 20 (1.8) | 29 (2.5) | 0.005 |