The hospital multip group in this study was almost certainly enriched for women at higher risk to begin with. (skepticalob.com)
Yes, but your basic mistake was thinking that the «secondary c - section rate» was the rate of c - sections among multips and that the «primary c - section rate» meant the CS rate among nullips. (skepticalob.com)
«Unscarred multips» who plan a section (e.g. for breech or history of pelvic floor trauma etc). (skepticalob.com)