| Parameter | Mean (cm) | SD | Minimum | Maximum |
| AFI | 11.35 | 5.15 | 2.4 | 26.2 |
| SDVP | 4.07 | 1.88 | 1.2 | 9.4 |
| AFI category (cm) | Number (n) | Percentage (%) |
| |
| ≤5 | 35 | 7.8 |
| |
| >5 - 10 | 173 | 38.6 | X2 = 194.34 | |
| 10 - 15 | 140 | 31.3 | df = 4 | |
| 15 - 20 | 80 | 17.9 | p < 0.001 | |
| >20 | 20 | 4.5 |
| |
| SDVP category (cm) | Number (n) | Percentage (%) |
| |
| <2 | 17 | 3.8 |
| |
| 2 - 4 | 191 | 42.6 | X2 = 364.308 | |
| 4 - 6 | 180 | 40.2 | df = 4 | |
| 6 - 8 | 40 | 8.9 | p < 0.001 | |
| >8 | 20 | 4.5 |
| |
| Correlations | Pearson’s r | p value | ||
| AFI & SDVP | 0.954 0.074 | 0.001 | ||
| AFI & POG at delivery | 0.116 | |||
| SDVP & POG at delivery | 0.043 | 0.364 | ||
| AFI & birth weight | 0.101 | 0.033 | ||
| SDVP & birth weight | 0.050 | 0.290 | ||