Table 5. Multivariate logistic regression analysis for GERD.

*Significant p-value.

OR: odds ratio; CI: confidence interval; T5-T12: thoracic vertebra fifth to 12th; T10-L2: 10th thoracic vertebra to second lumbar spinal vertebra; T12-S1: 12th thoracic vertebra to sacral spinal nerve one; GERD: gastroesophageal reflux disease

Variables	OR	95% CI	p-Value
Lumbar Cobb angle (deg.) < 30	1
Lumbar Cobb angle (deg.) ≥30	10.935*	3.261-53.799	<0.05
Age	1.002	1.959-2.026	0.647
Sex	1.06	1.426-3.160	0.931
Coronal balance	0.988	1.871-2.099	0.722
Thoracic kyphosis (T5-12)	1.004	1.967-2.022	0.691
Thoracolumbar kyphosis (T10-L2)	1.019	1.988-2.030	0.427
Lumbar lordosis (T12-S1)	1.019	1.991-2.027	0.333
Pelvic incidence	1.036	1.974-2.080	0.343
Pelvic tilt	0.998	1.957-2.019	0.442
Sagittal balance	1.031	1.946-2.103	0.601