Table 6 Prevalence of birth defects by residents cross maternal age.
From: Update from a cohort study for birth defects in Hunan Province, China, 2010–2020
Maternal age (years old) | Urban | Rural (reference) | OR (95% CI) | ||||
|---|---|---|---|---|---|---|---|
Total (n) | BD (n) | Prevalence (1/10,000, 95% CI) | Total (n) | BD (n) | Prevalence (1/10,000, 95% CI) | ||
< 20 | 6779 | 152 | 224.22 (188.58–259.87) | 20,540 | 394 | 191.82 (172.88–210.76) | 1.17 (0.97–1.42) |
20–24 | 106,323 | 2231 | 209.83 (201.13–218.54) | 232,797 | 4010 | 172.25 (166.92–177.58) | 1.22 (1.16–1.29) |
25–29 | 302,455 | 6868 | 227.08 (221.70–232.45) | 390,754 | 6150 | 157.39 (153.45–161.32) | 1.45 (1.40–1.50) |
30–34 | 188,465 | 4220 | 223.91 (217.16–230.67) | 196,557 | 2966 | 150.90 (145.47–156.33) | 1.49 (1.43–1.57) |
≥ 35 | 90,479 | 2059 | 227.57 (217.74–237.40) | 84,227 | 1546 | 183.55 (174.40–192.70) | 1.25 (1.17–1.33) |
