Table 6.
Adjusted odds ratio for losing weight at 18 months postpartum and for gaining more than 2 kg among 19 604 nulliparous and 16 593 parous women with use of multinomial logistic regression and a post-partum weight gain of 0–2 kg as reference category
|
PPWR18mo < 0 kg |
PPWR18mo > 2 kg |
|||
|---|---|---|---|---|
| Nulliparous | Parous | Nulliparous | Parous | |
|
Underweight women |
Adj. OR (95% CI) |
Adj. OR (95% CI) |
Adj. OR (95% CI) |
Adj OR (95% CI) |
| GWG = IOM rec. |
1.0 |
1.0 |
1.0 |
1.0 |
| GWG < IOM rec. |
1.35 (0.84,2.18) |
1.46 (0.86,2.49) |
0.48 (0.29,0.79)** |
0.68 (0.38 1.23) |
| GWG > IOM rec. |
0.92 (0.46,1.85) |
0.41 (0.19,0.91)* |
3.06 (1.78,5.25)*** |
2.02 (1.14,3.60)* |
|
Normal weight women |
|
|
|
|
| GWG = IOM rec. |
1.0 |
1.0 |
1.0 |
1.0 |
| GWG < IOM rec. |
1.70 (1.51,1.92)*** |
1.32 (1.16,1.49)*** |
0.89 (0.78,1.02) |
0.83 (0.71,0.96)* |
| GWG > IOM rec. |
0.79 (0.71,0.87)*** |
0.68 (0.61,0.75)*** |
1.79 (1.62,1.98)*** |
1.52 (1.36,1.70)*** |
|
Overweight women |
|
|
|
|
| GWG = IOM rec. |
1.0 |
1.0 |
1.0 |
1.0 |
| GWG < IOM rec. |
1.47 (0.98,2.22) |
1.18 (0.82,1.68) |
0.86 (0.54,1.36) |
0.76 (0.49,1.16) |
| GWG > IOM rec. |
0.70 (0.55,0.88)** |
0.67 (0.54,0.83)*** |
1.66 (1.30,2.12)*** |
1.54 (1.21,1.97)** |
|
Obese women |
|
|
|
|
| GWG = IOM rec. |
1.0 |
1.0 |
1.0 |
1.0 |
| GWG < IOM rec. |
3.01 (1.67,5.43)*** |
1.59 (0.99,2.56) |
1.29 (0.66,2.51) |
1.02 (0.58,1.81) |
| GWG > IOM rec. | 1.34 (0.92,1.95) | 1.03 (0.71,1.50) | 2.57 (1.73,3.84)*** | 2.33 (1.53,3.57)*** |
Adjusted for smoking at 6 months postpartum, maternal education, maternal age, breastfeeding in months for 6 months, breastfeeding up to 12 months, breastfeeding more than 12 months. The Norwegian Mother and Child Cohort Study, 1999–2008.
*p < 0.05, **p < 0.01 and ***p < 0.001.