Table 3 Multivariable generalized linear mixed model describing the potential factors associated with FJOA

 Female

–

–

–

–

 Male

0.372

1.191 (0.811~1.747)

0.778

1.057 (0.721~1.549)

Age

0.002^*

1.028 (1.010~1.046)

0.000^*

1.034 (1.016~1.052)

Facet tropism

0.754

0.994 (0.959~1.031)

0.276

0.980 (0.946~1.016)

BMI

0.000^*

1.136 (1.063~1.214)

0.003^*

1.105 (1.035~1.180)

 L2/3

0.408

0.327 (0.023~4.654)

0.109

0.113 (0.008~1.629)

 L3/4

0.935

1.047 (0.351~3.119)

0.718

1.223 (0.409~3.650)

 L4/5

0.199

0.773 (0.522~1.146)

0.065

0.691 (0.467~1.023)

 L5/S1

–

–

–

–

 MSU-1

–

–

–

–

 MSU-2

0.009^*

1.731 (1.144~2.619)

0.090

1.427 (0.946~2.152)

 MSU-3

0.001^*

2.590 (1.446~4.640)

0.000^*

3.258 (1.810~5.865)

 A

–

–

–

–

 AB(L)

0.243

0.680 (0.355~1.300)

0.817

1.080 (0.563~2.071)

 B(L)

0.000^*

2.714 (1.583~4.650)

0.956

0.986 (0.585~1.661)

 C(L)

0.370

1.594 (0.574~4.427)

0.723

1.200 (0.437~3.297)

 AB(R)

0.788

0.918 (0.492~1.714)

0.660

1.150 (0.616~2.146)

 B (R)

0.652

1.150 (0.624~2.119)

0.003^*

2.615 (1.405~4.870)

 C(R)

0.462

0.554 (0.115~2.678)

0.890

0.895 (0.184~4.354)

 L = R

–

–

–

–

 L > R

0.847

1.090 (0.452~2.631)

0.232

1.705 (0.710~4.093)

 L < R

0.560

1.294 (0.543~3.084)

0.273

1.619 (0.683~3.834)