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Table 4 Crude and adjusteda odds ratios for pregnancy outcomes among women 20+ weeks of gestation according to leisure-time physical activity trajectory class across nuMoM2b study visits

From: Patterns of leisure-time physical activity across pregnancy and adverse pregnancy outcomes

Pregnancy outcome Pregnancy outcome Crude odds ratios Adjusted odds ratios
 Physical activity trajectory
 Class (Contrast)b n/N (%) Estimate (95% CI) p-value Estimate (95% CI) p-value
Preterm birth (Nc = 9465, Na = 9278)
 High (referent) 247/3272 (7.5) 1.00 0.0175 1.00 0.1998
 Early decreasing (versus referent) 90/980 (9.2) 1.24 (0.96–1.59) 1.12 (0.86–1.46)
 Early increasing (versus referent) 118/1300 (9.1) 1.22 (0.97–1.54) 1.09 (0.86–1.39)
 Late decreasing (versus referent) 194/2278 (8.5) 1.14 (0.94–1.39) 1.09 (0.89–1.33)
 Low (versus referent) 170/1635 (10.4) 1.42 (1.16–1.74) 1.31 (1.05–1.63)
Spontaneous preterm birth (Nc = 9461, Na = 9274)
 High (referent) 160/3271 (4.9) 1.00 0.4563 1.00 0.5995
 Early decreasing (versus referent) 54/978 (5.5) 1.14 (0.83–1.56) 1.09 (0.78–1.52)
 Early increasing (versus referent) 63/1300 (4.8) 0.99 (0.73–1.34) 0.95 (0.70–1.29)
 Late decreasing (versus referent) 105/2278 (4.6) 0.94 (0.73–1.21) 0.94 (0.72–1.21)
 Low (versus referent) 95/1634 (5.8) 1.20 (0.92–1.56) 1.17 (0.88–1.54)
Preeclampsia (Nc = 9450, Na = 9263)
 High (referent) 163/3270 (5.0) 1.00 0.0098 1.00 0.6210
 Early decreasing (versus referent) 64/976 (6.6) 1.34 (0.99–1.80) 1.05 (0.77–1.44)
 Early increasing (versus referent) 94/1299 (7.2) 1.49 (1.14–1.93) 1.21 (0.92–1.59)
 Late decreasing (versus referent) 149/2273 (6.6) 1.34 (1.06–1.68) 1.13 (0.89–1.43)
 Low (versus referent) 115/1632 (7.0) 1.44 (1.13–1.85) 1.18 (0.91–1.53)
Preeclampsia or antepartum gHTN (Nc = 9450, Na = 9263)
 High (referent) 372/3270 (11.4) 1.00 0.0066 1.00 0.3719
 Early decreasing (versus referent) 131/976 (13.4) 1.21 (0.98–1.49) 1.03 (0.82–1.29)
 Early increasing (versus referent) 186/1299 (14.3) 1.30 (1.08–1.57) 1.16 (0.95–1.41)
 Late decreasing (versus referent) 326/2273 (14.3) 1.30 (1.11–1.53) 1.14 (0.97–1.35)
 Low (versus referent) 227/1632 (13.9) 1.26 (1.05–1.50) 1.16 (0.96–1.40)
GDM (Nc = 9314, Na = 9131)
 High (referent) 101/3245 (3.1) 1.00 0.0003 1.00 0.0001
 Early decreasing (versus referent) 48/956 (5.0) 1.65 (1.16–2.34) 1.74 (1.21–2.52)
 Early increasing (versus referent) 48/1270 (3.8) 1.22 (0.86–1.73) 1.16 (0.81–1.68)
 Late decreasing (versus referent) 105/2226 (4.7) 1.54 (1.17–2.04) 1.50 (1.12–2.01)
 Low (versus referent) 92/1617 (5.7) 1.88 (1.41–2.51) 2.00 (1.47–2.73)
SGA < 5th percentile (Nc = 9426, Na = 9239)
 High (referent) 123/3260 (3.8) 1.00 0.1649 1.00 0.2169
 Early decreasing (versus referent) 45/974 (4.6) 1.24 (0.87–1.75) 1.13 (0.78–1.63)
 Early increasing (versus referent) 63/1294 (4.9) 1.31 (0.96–1.78) 1.15 (0.83–1.60)
 Late decreasing (versus referent) 116/2270 (5.1) 1.37 (1.06–1.78) 1.37 (1.05–1.79)
 Low (versus referent) 76/1628 (4.7) 1.25 (0.93–1.67) 1.08 (0.79–1.47)
  1. aAdjusted for age (linear and quadratic terms), race/ethnicity (white, non-Hispanic; black, non-Hispanic; Hispanic; Asian: and other), early pregnancy BMI (linear and quadratic terms), and smoking status 3 months prior to pregnancy. P-values are taken from logistic regression models
  2. bNc and Na present the number of observations used in calculating the crude odds ratios and the adjusted odds ratios, respectively