Table 2.
Characteristics of isolated and non-isolated NTD cases in five counties in Shanxi province of Northern China, 2002–2021, N (%).
| Characteristics | Isolated NTDs (n = 1934) |
Non-Isolated NTDs (n = 97) | χ2 | P | |
|---|---|---|---|---|---|
| Residence | Rural | 1694 (87.6) | 83 (85.6) | 0.346 | 0.556 |
| Urban | 240 (12.4) | 14 (14.4) | |||
| Infant Sex | Male | 865 (44.7) | 40(41.2) | 0.021 | 0.885 |
| Female | 1027 (53.1) | 46 (47.4) | |||
| Unknown | 42 (2.2) | 11 (11.3) | |||
| Gestational weeks | <28w | 1260 (65.1) | 61 (62.9) | 0.208 | 0.648 |
| ≥28w | 674 (34.9) | 36 (37.1) | |||
| NTDs by type | Anencephaly | 585 (30.2) | 13 (13.4) | 34.068 | <0.01 |
| Spina bifida | 787 (40.7) | 35 (36.1) | |||
| Encephalocele | 206 (10.7) | 27 (27.8) | |||
| Multiple NTDs | 356 (18.4) | 22 (22.7) | |||
| Delivery time | Before 2009 | 1262 (65.3) | 62 (63.9) | 0.073 | 0.787 |
| After 2009 | 672 (34.7) | 35 (36.1) | |||