Table 2 Distribution of thumb polydactyly according to gender (group A)
From: Epidemiological statistics of congenital thumb duplication in the Chinese population
Sex | n | Unilateral | Bilateral |
|---|---|---|---|
Male | 1492 | 1274 (85.4) | 218 (14.6) |
Female | 971 | 857 (88.3) | 114 (11.7) |
χ2 | 4.157 | ||
P | 0.041 | ||