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Table 1 Baseline characteristics of patients with ASD with and without GERD

From: Prevalence and key radiographic spinal malalignment parameters that influence the risk for gastroesophageal reflux disease in patients treated surgically for adult spinal deformity

Variable Overall (n = 71) GERD+ (n = 37) GERD− (n = 34) P value
Age (y) 70.4 ± 7.4 70.8 ± 6.54 70.0 ± 8.23 0.6663
Female/male gender (n) 62/9 32/5 30/4 0.7297
TK, standing (°) 24.9 ± 19.0 29.3 ± 19.8 20.7 ± 17.3 0.0620
TLK, standing (°) 19.34 ± 18.4 23.7 ± 19.7 15.2 ± 16.1 0.0561
LL, standing (°) 13.2 ± 19.6 14.4 ± 18.2 12.2 ± 21.7 0.6571
PI (°) 53.1 ± 9.6 54.4 ± 11.2 51.9 ± 8.1 0.2963
PT (°) 37.5 ± 10.6 38.4 ± 10.0 36.5 ± 11.2 0.4759
SS (°) 17.0 ± 11.9 16.9 ± 10.1 17.2 ± 13.4 0.8947
SVA (mm) 104.8 ± 64.6 116.9 ± 56.8 93.1 ± 71.0 0.1354
PI-LL(°) 29.3 ± 16.5 27.52 ± 17.3 31.0 ± 15.4 0.3864
Cobb angle (°) 23.6 ± 16.9 26.9 ± 17.9 20.1 ± 15.1 0.0918
TK, FBB (°) 19.9 ± 15.8 24.2 ± 16.4 14.8 ± 13.6 <0.05
TLK, FBB (°) 7.2 ± 14.4 13.6 ± 15.2 −0.42 ± 8.8 <0.0001
LL, FBB (°) 31.9 ± 16.3 29.9 ± 15.8 34.3 ± 17.0 0.0918
Cobb angle ~30°/30°~ (n)   22/15 29/5 <0.05
Number of thoracolumbar vertebral fractures (n) 0.55 ± 1.1 0.78 ± 1.3 0.32 ± 0.84 0.0876
Intake of NSAIDs 15 (21.1%) 10 (27.02%) 5 (14.7%) 0.252
Intake of bisphosphonates 8 (11.3%) 6 (16.2%) 2 (5.88%) 0.264
Intake of PPI 34 (47.9%) 34 (91.9%) 0  
  1. Data are mean ± standard deviation unless otherwise shown
  2. Bolded values with P < 0.05
  3. ASD adult spinal deformity, FBB fulcrum backward-bending, GERD gastroesophageal reflux disease, LL lumbar lordosis, TK thoracic kyphosis, TLK thoracolumbar kyphosis, PI pelvic incidence; PT pelvic tilt, SS sacral slope, SVA sagittal vertical axis, NSAIDs non-steroidal anti-inflammatory drugs, PPI Proton pump inhibitor