Analysis of the genotype distribution in BMP9 between the OPLL and control groups.

Note: P (χ2) calculated by χ2 test of the additive model. P (Logistic) indicates correction for clinical and demographic characteristics and the additive model of each SNP using the binary logistic method (backward). Gender (male) = (WALD: 4.10; P = 0.043; OR: 1.32, CI: 1.01–1.73), FBG = (SCORE: 65.86; P; OR: 5.42, CI: 3.60–8.15), rs7923671, rs75024165 and rs34379100 show statistical significance (P* = P0.05,** = P0.01,*** = P0.001.