| Variables | Frequency | |
|---|---|---|
| n | % | |
| Stage of pregnancy | ||
| First trimester (≤13 weeks ) | 29 | 12.4 |
| Second trimester (13–27 weeks) | 58 | 24.8 |
| Third trimester (≥28 weeks) | 147 | 62.8 |
| Parity | ||
| 0 child | 70 | 29.9 |
| ≥1 child | 164 | 70.1 |
| History of premature birth | ||
| No | 219 | 93.6 |
| Yes | 15 | 6.4 |
| History of miscarriage/abortion | ||
| No | 187 | 79.9 |
| Yes | 47 | 20.1 |
| Symptoms of discomfort | ||
| No | 54 | 23.1 |
| Yes | 180 | 76.9 |
| Pre-gravid BMI | ||
| Underweight: <18.5 kg/m2 | 47 | 20.1 |
| Normal: 18.5–24.99 kg/m2 | 170 | 72.7 |
| Overweight: 25–29.99 kg/m2 | 16 | 6.8 |
| Obesity: ≥30 kg/m2 | 1 | 0.4 |