Table 2. Multinomial logistic regression models of associations between various measures of non-occupational physical activity and preeclampsia and gestational hypertension, Study of Pregnancy Hypertension in Iowa (SOPHIA), 2002-2005.
| Preeclampsia (n = 258) | Gestational hypertension (n = 233) | |||||
|---|---|---|---|---|---|---|
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| N (Cases/Controls) | OR (95% CI) Unadjusted | OR (95% CI) BMI Adjusted | N (Cases/Controls) | OR (95% CI) Unadjusted | OR (95% CI) BMI Adjusted | |
| LTPA (10 minutes/week)a | 258/182 | 0.98 (0.97, 0.99) | 0.99 (0.98, 1.00) | 233/182 | 0.99 (0.98, 1.00) | 0.99 (0.98, 1.00) |
| LTPA (minutes/week) | ||||||
| 0 | 64/39 | REF | REF | 45/39 | REF | REF |
| 1-75 | 99/52 | 1.16 (0.69, 1.95) | 1.10 (0.62, 1.94) | 94/52 | 1.57 (0.91, 2.71) | 1.42 (0.78, 2.56) |
| 76 - 170 | 49/44 | 0.68 (0.38, 1.20) | 0.88 (0.50, 1.58) | 51/44 | 1.01 (0.56, 1.81) | 1.37 (0.76, 2.48) |
| ≥ 171 | 46/47 | 0.60 (0.34, 1.05) | 0.59 (0.34, 1.03) | 43/47 | 0.79 (0.44, 1.44) | 0.73 (0.41, 1.31) |
| p for trend | 0.02 | 0.03 | 0.15 | 0.21 | ||
| Did youlift/carry something ≥20 lbs. ≥ 1/week away from work? | ||||||
| No | 192/127 | REF | REF | 164/127 | REF | REF |
| Yes | 65/55 | 0.78 (0.51, 1.19) | 0.78 (0.51, 1.21) | 69/55 | 0.97 (0.64, 1.48) | 0.97 (0.63, 1.49) |
| Time on feet away from work (hours/day) | 256/181 | 0.97 (0.88, 1.07) | 1.00 (0.90, 1.10) | 233/181 | 0.94 (0.85, 1.04) | 0.96 (0.86, 1.07) |
| Time on feet away from work (hours/day) | ||||||
| 0-1 | 81/58 | REF | REF | 67/58 | REF | REF |
| 2 | 74/47 | 1.13 (0.69, 1.85) | 1.31 (0.78, 2.18) | 82/47 | 1.51 (0.91, 2.50) | 1.70 (1.01, 2.85) |
| 3-4 | 66/48 | 0.99 (0.60, 1.63) | 1.12 (0.66, 1.89) | 58/48 | 1.05 (0.62, 1.76) | 1.16 (0.68, 1.98) |
| ≥5 | 35/28 | 0.90 (0.49, 1.63) | 1.06 (0.57, 1.97) | 26/28 | 0.80 (0.42, 1.52) | 0.92 (0.48, 1.78) |
| p for trend | 0.69 | 0.88 | 0.49 | 0.80 | ||
| Heavy household chores (10 minutes/week)b | 258/182 | 0.99 (0.98, 1.00) | 1.00 (0.99, 1.01) | 233/182 | 1.01 (1.00, 1.02) | 1.00 (0.99, 1.01) |
| Heavy household chores (minutes/week) | ||||||
| 0-20 | 78/49 | REF | REF | 52/49 | REF | REF |
| 21-60 | 77/55 | 0.88 (0.54, 1.45) | 0.81 (0.48, 1.36) | 62/55 | 1.06 (0.62, 1.81) | 0.98 (0.57, 1.69) |
| 61-180 | 60/45 | 0.84 (0.50, 1.42) | 0.84 (0.49, 1.44) | 59/45 | 1.24 (0.71, 2.14) | 1.22 (0.69, 2.13) |
| >180 | 43/33 | 0.82 (0.46, 1.46) | 0.79 (0.43, 1.43) | 60/33 | 1.71 (0.96, 3.05) | 1.64 (0.91, 2.96) |
| p for trend | 0.46 | 0.44 | 0.06 | 0.07 | ||
Abbreviations: OR, odds ratio; CI, confidence interval; LTPA, leisure time physical activity
a
Effect estimates presented for every ten minute increase in LTPA per week
b
Effect estimates presented for every ten minute increase in heavy household chores per week