Obstetric outcomes
Odds ratio (95% confidence interval)
Odds ratio (95% confidence interval)
Unadjusted
Adjusted a
p-value
Preterm birth
Group A
1
1
Group B
1.514 (1.419 – 1.616)
1.386 (1.297 – 1.480)
0.0713
Group C
1.879 (1.679 – 2.103)
1.644 (1.468 – 1.841)
<.0001
LBW
Group A
1
1
Group B
1.446 (1.369 – 1.528)
1.313 (1.242 – 1.388)
0.0949
Group C
1.771 (1.609 – 1.949)
1.525 (1.385 – 1.680)
<.0001
LGA
Group A
1
1
Group B
1.006 (0.939 – 1.078)
0.967 (0.902 – 1.036)
0.0019
Group C
0.711 (0.609 – 0.830)
0.676 (0.578 – 0.790)
<.0001