Table 2. Odds ratios and 95% confidence intervals for preterm birth according to maternal ApoA-1, ApoB and ApoB/ApoA-1.
Variables Total/preterm birth Model 1 Model 2
ApoA-1
T1 1997/111 1.00 (reference) 1.00 (reference)
T2 2029/96 0.84 (0.64,1.12) 0.86 (0.65,1.15)
T3 1960/137 1.28 (0.99,1.66) 1.25 (0.96,1.64)
P for trend 0.064 0.091
Per 1-g/L increase in ApoA-1 1.39 (0.86,2.24) 1.31 (0.81,2.12)
ApoB
T1 2048/93 1.00 (reference) 1.00 (reference)
T2 1968/117 1.33 (1.01,1.76) 1.26 (0.95,1.68)
T3 1970/134 1.54 (1.17,2.02) 1.41 (1.07,1.87)
P for trend 0.002 0.017
Per 1-g/L increase in ApoB 2.71 (1.65,4.42) 2.33 (1.40,3.86)
ApoB/apoA-1
T1 1995/101 1.00 (reference) 1.00 (reference)
T2 1996/103 1.02 (0.77,1.35) 1.06 (0.79,1.41)
T3 1995/140 1.42 (1.09,1.85) 1.35 (1.03,1.78)
P for trend 0.007 0.024
Per 1 increase in ApoB/ApoA-1 5.55 (2.04,14.99) 4.10 (1.47,11.36)