| No-NA group (n = 172) | Early-NA group (n = 603) | Late-NA group (n = 344) | F/χ2 | p value |
---|---|---|---|---|---|
Maternal age (y, \(\bar{x}\pm s\)) | 31.7 ± 3.6 | 32.1 ± 3.5 | 31.8 ± 3.3 | 1.577 | 0.207 |
BMI on admission (kg/m2, \(\bar{x}\pm s\)) | 26.1 ± 2.9 | 26.5 ± 2.8 | 26.5 ± 2.8 | 1.803 | 0.165 |
Gestational times (n, \(\bar{x}\pm s\)) | 3 ± 1.0 | 3 ± 1.0 | 3 ± 1.0 | 0.269 | 0.765 |
Parous times (n, \(\bar{x}\pm s\)) | 2 ± 0.3 | 2 ± 0.3 | 2 ± 0.2 | 2.891 | 0.056 |
Gestational weeks (w, \(\bar{x}\pm s\)) | 39.1 ± 0.9 | 39.2 ± 0.9 | 39.2 ± 0.9 | 1.801 | 0.166 |
Neonatal birth weight (g, \(\bar{x}\pm s\)) | 3278 ± 317 | 3332 ± 362 | 3347 ± 372 | 2.210 | 0.110 |
GDM (n, %) | 35, 20.3 | 125, 20.7 | 69, 20.1 | 0.062 | 0.969 |
Hypertension disorder (n, %) | 8, 4.7 | 41, 6.8 | 28, 8.1 | 2.191 | 0.334 |