Table 2. Significant predictors of trajectories of Physical Component Summary scores during pregnancy (n = 2852).
| Predictors | OR (95% CI) | ||
|---|---|---|---|
| Vulnerable | At risk | Recovering | |
| Gestational age at intake | 1.07 (1,03, 1,10)** | 1.00 (0.97, 1.04) | 1.03 (0.99, 1.06) |
| Maternal educational level | |||
| High | reference | reference | reference |
| Mid-high | 1.02 (0.70, 1.49) | 1.34 (0.99, 1.82) | 1.11 (0.83, 1.48) |
| Mid-low | 1.29 (0.89, 1.87) | 1.28 (0.93, 1.75) | 0.94 (0.68, 1.28) |
| low | 0.80 (0.50, 1.29) | 0.69 (0.45, 1.06) | 0.64 (0.41, 1.00) |
| Parity | |||
| multiparity | Reference | reference | reference |
| Null parity | 0.87 (0.65, 1.16) | 0.71 (0.56, 0,90)** | 1.35 (1.05, 1.74)* |
| BMI at intake | 1.06 (1.03, 1.10)** | 1.06 (1.03, 1,10)** | 1.01 (0.98, 1.04) |
| Maternal smoking in early pregnancy | |||
| Non-smoker | reference | reference | reference |
| Smoked until pregnancy confirmed | 0.82 (0.52, 1.29) | 1.38 (0.98, 1.93) | 0.86 (0.57, 1.31) |
| Continued smoking during pregnancy | 0.45 (0.27, 0,74)** | 1.25 (0.86, 1.82) | 0.42 (0.24, 0.69)** |
| Chronic conditions in previous year | |||
| None | reference | reference | reference |
| One | 1.33 (0.98, 1.80) | 1.36 (1.06, 1.76)* | 0.94 (0.73, 1.22) |
| ≥Two | 1.64 (1.09, 2.48)* | 1.89 (1.34, 2.69)** | 1.20 (0.83, 1.74) |
| Headache in early pregnancy | |||
| ≤Once a week | reference | reference | reference |
| Daily/few days a week | 2.64 (1.83, 3.80)** | 1.33 (0.91, 1.94) | 1.64 (1.13, 2.36)** |
| Fatigue in early pregnancy | |||
| ≤ Once a week | reference | reference | reference |
| A few days a week | 1.82 (1.03, 3.21)* | 1.55 (1.06, 2.28)* | 2.20 (1.40, 3.45)** |
| Daily | 4.82 (2.76, 8.40)** | 2.61 (1.77, 3.85)** | 3.71 (2.36, 5.84)** |
| Pelvic pain in early pregnancy | |||
| ≤Once a week | reference | reference | reference |
| Daily/ a few days a week | 4.76 (2.91, 7.78)** | 2.86 (1.74, 4.71)** | 1.82 (1.02, 3.22)* |
| Back pain in early pregnancy | |||
| ≤Once a week | reference | reference | reference |
| A few days a week | 2.04 (1.40, 2.95)** | 1.98 (1.44, 2.72)** | 1.61 (1.14, 2.26)** |
| Daily | 5.29 (3.21, 8.70)** | 1.52 (0.85, 2.73) | 3.11 (1.82, 5.30)** |
| Nausea in early pregnancy | |||
| ≤Once a week | reference | reference | reference |
| A few days a week | 1.13 (0.79, 1.63) | 1.07 (0.85, 1,41) | 1.98 (1.46, 2.68)** |
| Daily | 2.26 (1.62, 3.18)** | 1.44 (1.08, 1.93)* | 3.33 (2.46, 4.51)** |
| Pregnancy-specific anxiety | 2.10 (1.34, 3.29)** | 1.27 (0.85, 1.87) | 1.64 (1.10, 2.43)* |
Values are presented as ORs using the healthy trajectory as a reference category.
*p<0.05
**p<0.01