Table 2 Gender-specific prevalence of CHD in school-aged children in a high altitude region
From: Prevalence of congenital heart disease among school children in Qinghai Province
Male | Female | P value | ||||
|---|---|---|---|---|---|---|
N | (‰) | N | (‰) | |||
Nationality | 0.003 | |||||
Tibetan | 98 | (6) | 136 | (8) | ||
Mongol | 12 | (5) | 24 | (9) | ||
Han | 3 | (11) | 6 | (27) | ||
Hui | 4 | (4) | 8 | (9) | ||
Sala | 0 | (0) | 0 | (0) | ||
Tujia | 1 | (2) | 1 | (2) | ||
Others | 0 | (0) | 0 | (0) | ||
County | > 0.05 | |||||
Jianzha (1990 m) | 20 | (5) | 19 | (4) | ||
Tongren (2480 m) | 14 | (2) | 17 | (3) | ||
Henan (3510 m) | 12 | (5) | 27 | (10) | ||
Zeku (3655 m) | 43 | (7) | 72 | (11) | ||
Qumalai (4223 m) | 29 | (11) | 40 | (15) | ||
CHD subtype | 0.002 | |||||
ASD | 67 | (3) | 85 | (4) | ||
VSD | 15 | (1) | 14 | (1) | ||
PDA | 29 | (1) | 62 | (3) | ||
Complicated CHD | 2 | (0.1) | 4 | (0.2) | ||
Two or more CHD | 5 | (0.2) | 10 | (0.5) | ||
Age at diagnosis of CHD | < 0.001 | |||||
≤ 6 | 26 | (28) | 27 | (33) | ||
6–12 | 51 | (4) | 95 | (7) | ||
> 12 | 41 | (6) | 53 | (7) | ||
Altitude | > 0.05 | |||||
≤ 4200 m | 89 | (5) | 135 | (7) | ||
> 4200 m | 29 | (11) | 40 | (15) | ||