From: Association of a polymorphism in PON-1 gene with steroid-induced osteonecrosis of femoral head in Chinese Han population
N11
N12
N22
N1
N2
P-value
All subjects
68
97
30
233
157
0.77
co.ca = 0
57
15
117
87
0.22
co.ca = 1
38
40
116
70
0.51