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Table 5 Univariate analysis and multivariate analysis of medical costs risk factors

From: Older fusion-surgery age in congenital scoliosis patients is a risk factor for extended length of stay, more estimated blood loss, longer fused segments and higher medical costs: a retrospective study

Parameters Medical costs > 20k USD Medical costs  ≤ 20k USD p
Univariate analysis
 Sex (male/female) 126/140 438/503 0.812
 Age at fusion 17.67 ± 9.10 11.28 ± 7.33 < 0.001
 CS type (FF/FS/MD) 38.0 %/24.4 %/37.6 % 53.5 %/16.8 %/29.8 % < 0.001
 Cervical deformity 5.6 % 5.5 % 0.943
 Thoracic deformity 86.1 % 74.5 % < 0.001
 Lumbar deformity 28.9 % 36.8 % 0.018
 Intraspinal defects 35.0 % 26.8 % 0.009
 Musculoskeletal defects 16.2 % 15.3 % 0.731
 Cardiac defects 15.0 % 13.3 % 0.462
 Gastrointestinal defects 2.3 % 4.0 % 0.171
 Urogenital defects 8.6 % 5.0 % 0.024
Parameters p Odds ratio 95 % CI
Multivariate analysis
 Age at fusion < 0.001 1.091 1.071–1.112
 Thoracic deformity 0.004 1.853 1.222–2.810
 Urogenital defects 0.182 1.476 0.833–2.613
 CS type 0.448 - -
  FF - 1 (Reference)  
  FS 0.280 1.247 0.835–1.860
  MD 0.274 1.216 0.857–1.725
 Intraspinal defects 0.899 1.021 0.740–1.408