Interpregnancy weight change by prepregnancy BMI in Nova Scotia, 2003–2013: N = 22 890.
| PREPREGNANCY BMI | N | MEDIAN (IQR) INTERPREGNANCY WEIGHT CHANGE, KG | WEIGHT CHANGE, % | |||
|---|---|---|---|---|---|---|
| LOSS >1 KG | STABLE WITHIN 1 KG | GAIN > 1 TO <5 KG | GAIN ≥5 KG | |||
| All women | 22890 | 2.3 (−0.9 to 6.8) | 24.6 | 18.2 | 26.0 | 31.2 |
| Underweight | 1020 | 2.7 (0.5 to 7.3) | 11.1 | 20.7 | 32.8 | 35.4 |
| Normal weight | 11 869 | 1.8 (−0.5 to 5.9) | 21.1 | 22.3 | 29.4 | 27.2 |
| Overweight | 5465 | 2.3 (−1.8 to 7.7) | 27.3 | 14.3 | 23.1 | 35.3 |
| Obese | 4537 | 2.3 (−3.6 to 8.6) | 33.5 | 11.5 | 18.9 | 36.0 |
BMI—body mass index, IQR—interquartile range.