. Author manuscript; available in PMC: 2006 Jan 25.

Published in final edited form as: J Midwifery Womens Health. 2005;50(5):365–372. doi: 10.1016/j.jmwh.2005.05.012

Table 6.

– Predictors of Obstetric Trauma: Final Logistic Regression Model ^*

Variables	RR (95% CI)
Nulliparity	4.59 (3.29–6.64)
Birthweight ≥ 4,000 grams	1.87 (1.17–3.37)
Sitting upright for delivery	0.68 (0.50–0.91)
Non-Hispanic whites	1.34 (1.06–1.73)
Education > high school	1.27 (1.01–1.62)
Head born between contraction	0.82 (0.67–0.99)

Each variable is adjusted for all others listed here.