Table 3. Characteristics of women and infant.
| Characteristics | N (%) |
|---|---|
| Birth weight | |
| Low birth weight | 2500(2.9) |
| Normal birth weight | 77674(90.6) |
| Macrosomic | 5591(6.5) |
| Pre pregnant BMI | |
| Lean | 14477(16.9) |
| Normal | 65536(76.4) |
| Overweight and obese | 5752(6.7) |
| Weight gain | |
| Below IOM | 14985(17.5) |
| Wthin IOM | 21461(25.0) |
| Above IOM | 49319(57.5) |
| Age | 27.92±4.059 |
| ≤19 | 829(1.0) |
| 20–24 | 15360(17.9) |
| 25–29 | 44151(51.5) |
| 30–34 | 19823(23.1) |
| ≥35 | 5602(6.5) |
| Education | |
| Elementary school | 1477(1.7) |
| Junior high school | 8547(10.0) |
| Senior high school | 38479(44.9) |
| College or graduate school | 37144(43.4) |
| Infants Gender | |
| Male | 45667(53.2) |
| Female | 40098(46.8) |
| Smoking during pregnancy | |
| No | 85765(100.0) |