Table 1 Maternal demographic and obstetric characteristics
Total | BMI < 18.5 kg/m2 (n = 868) | BMI:18.5–24 kg/m2 (n = 4920) | BMI: 24–28 kg/m2 (n = 665) | BMI > = 28 kg/m2 (n = 145) | Chi-square value | P value | ||
|---|---|---|---|---|---|---|---|---|
Maternal age | 6596 | 868 | 4918 | 665 | 145 | |||
< 25 | 167 (2.53) | 27 (3.11) | 122 (2.48) | 13 (1.95) | 5 (3.45) | 108.9 | < 0.001 | |
25–30 | 2116 (32.08) | 361 (41.59) | 1535 (31.21) | 178 (26.77) | 42 (28.97) | |||
30–35 | 2937 (44.53) | 372 (42.86) | 2242 (45.59) | 264 (39.70) | 59 (40.69) | |||
> = 35 | 1376 (20.86) | 108 (12.44) | 1019 (20.72) | 210 (31.58) | 39 (26.90) | |||
Education level (years) | 6483 | 855 | 4840 | 646 | 142 | |||
< = 9 | 1722 (26.56) | 211 (24.68) | 1234 (25.50) | 221 (34.21) | 56 (39.44) | 54.79 | < 0.001 | |
10–12 | 1334 (20.58) | 175 (20.47) | 980 (20.25) | 159 (24.61) | 20 (14.08) | |||
> 12 | 3427 (52.86) | 469 (54.85) | 2626 (54.26) | 266 (41.18) | 66 (46.48) | |||
Location | 6598 | 868 | 4920 | 665 | 145 | |||
city or town | 5960 (90.33) | 784 (90.32) | 4446 (90.37) | 599 (90.08) | 131 (90.34) | 0.06 | 0.99 | |
rural area | 638 (9.67) | 84 (9.68) | 474 (9.63) | 66 (9.92) | 14 (9.66) | |||
Permanent population | 6593 | 868 | 4915 | 665 | 145 | |||
No | 4797 (72.76) | 613 (70.62) | 3591 (73.06) | 482 (72.48) | 111 (76.55) | 3.31 | 0.35 | |
Yes | 1796 (27.24) | 255 (29.38) | 1324 (26.94) | 183 (27.52) | 34 (23.45) | |||
Parity | 6598 | 868 | 4920 | 665 | 145 | |||
Nullipara | 5339 (80.92) | 757 (87.21) | 3965 (80.59) | 501 (75.34) | 116 (80.00) | 36.1 | < 0.001 | |
Multipara | 1259 (19.08) | 111 (12.79) | 955 (19.41) | 164 (24.66) | 29 (20.00) | |||
Multiple gestations | 6598 | 868 | 4920 | 665 | 145 | |||
Singleton | 4806 (72.84) | 615 (70.85) | 3592 (73.01) | 487 (73.23) | 112 (77.24) | 3.28 | 0.35 | |
Multiple gestations | 1792 (27.16) | 253 (29.15) | 1328 (26.99) | 178 (26.77) | 33 (22.76) |