Table 7.

Comparison of baseline, operative, and follow-up parameters between patients with the best and worst outcomes, based on the SRS-22, following surgery for scoliosis among adults 46–85 years old

	Worst (n = 30)	Best (n = 32)	p value
Baseline parameters
Gender (M/F)	3/27	5/27	0.709
Mean age, years (SD)	58 (7)	58 (8)	0.974
Mean body mass index (SD)	27 (6)	25 (3)	0.058
Smoker (%)	10 %	0 %	0.102
Depression/anxiety (%)	57 %	13 %	<0.001
Narcotic use (%)	60 %	33 %	0.043
Mean comorbidity index (SD)	3.5 (2.6)	2.2 (1.7)	0.079
Mean leg pain score (SD)	5.8 (1.8)	6.2 (2.1)	0.530
Mean back pain score (SD)	7.2 (1.4)	5.9 (2.3)	0.010
Diagnosis (de novo/AIS)	8/22	9/23	1.000
Curve type (thoracic/thoracolumbar)a	5/24	5/26	0.992
Positive sagittal malalignment, percent with SVA >+6 cm	24 %	14 %	0.485
Coronal malalignment, percent with CA magnitude >4 cm	14 %	21 %	0.730
Mean max coronal Cobb angle, ° (SD)	52 (18)	52 (21)	0.948
Operative parameters
Operative time, h (SD)	7.9 (3.2)	9.3 (3.8)	0.128
Estimated blood loss, L (SD)	2.0 (1.6)	1.8 (1.5)	0.545
Fusion to the sacro-pelvis (%)	33 %	50 %	0.142
Major complication (%)	30 %	16 %	0.230
Minor or major complication (%)	50 %	28 %	0.117
2-year follow-up parameters
Mean leg pain score (SD)	4.5 (3.0)	0.6 (1.0)	<0.001
Mean back pain score (SD)	5.3 (2.4)	0.8 (1.7)	<0.001
Narcotic use (%)	56 %	0 %	<0.001
Positive sagittal malalignment, percent with SVA >+6 cm	33 %	3 %	0.004
Coronal malalignment, percent with CA magnitude >4 cm	10 %	6 %	0.671
Mean max coronal Cobb angle, ° (SD)	27 (13)	26 (16)	0.972

SRS Scoliosis Research Society, SD standard deviation, AIS adult idiopathic scoliosis, SVA sagittal vertical axis, CA coronal alignment

^aTwo patients had lumbosacral curves

Significant p values are shown in bold