Table 5. Multivariate regression analysis for risk of adverse pregnancy outcomes in delivery-associated hospitalizations divided by decade of delivery (1993–1999 and 2000–2007).

1993–1999 Variables	LOS	HTN	PROM	IUGR	Cesarean delivery
White
African-American	0.30 (0.23–0.37)***	1.44 (1.14 –1.81)**	1.35 (1.02 to −1.80)*	0.85 (0.49–1.49)	1.01 (0.86–1.19)
Other races	−0.15 (−0.20 to −0.10)***	0.87 (0.70–1.07)	0.82 (0.62–1.09)	1.04 (0.65–1.68)	0.97 (0.85–1.11)
DM + PM	2.43 (2.12–2.74)***	2.86 (1.71–4.76)***	1.27 (0.42–3.83)	2.72 (0.83–8.86)	1.31 (0.80–2.14)
Control
Age	0.02 (0.018 to −0.024)***	1.001 (0.986–1.016)	1.01 (0.99–1.03)	0.995 (0.96–1.03)	1.05 (1.04–1. 0 6)***
Diabetes	1.61 (1.11–2.10)***	1.23 (0.59–2.58)	1.55 (0.58–4.16)	N/A	1.23 (0.72–2.12)
2000–2007 White
African-American	0.25 (0.19 – 0.32)***	1.33 (1.09 – 1.63)**	0.89 (0.65 – 1.23)	1.91 (1.28–2.86)**	0.96 (0.83–1.10)
Other races	−0.01 (−0.06 to 0.04)	0.88 (0.74–1.04)	0.84 (0.66–1.07)	1.12 (0.78–1.59)	1.05 (0.94–1.17)
DM + PM	1.24 (1.03 – 1.46)***	3.24 (1.89–5.55)***	1.77 (0.74–4.23)	1.33 (0.36–4.86)	1.08 (0.72–1. 64)
Control
Age	0.015 (0.010–0.020)***	1. 015 (1.002 –1.03)*	1.002 (0.98–1.02)	0.98 (0.95–1.01)	1.04 (1.03–1.05)***
Diabetes	1.14 (0.97–1.31)***	4.12 (2.67 – 6.36)***	0.21 (0.03–1.35)	0.52 (0.07–3.74)	1.52 (1.08–2.15)*

Values are OR (95% CI) for all variables from multivariate logistic regression analyses, except for LOS for which linear regression was used and the β coefficients (95% CI) ar shown.

^*p < 0.05.

^**p < 0.01.

^***p < 0.001 compared to controls.