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Table 2 Univariate analysis and multivariate analysis of LOS 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 LOS > 16 days LOS ≤ 16 days p
Univariate analysis
 Sex (male/female) 122/166 442/477 0.089
 Age at fusion 15.70 ± 10.15 11.75 ± 7.23 < 0.001
 CS type (FF/FS/MD) 41.3 %/19.1 %/39.6 % 52.8 %/18.3 %/28.9 % 0.001
 Cervical deformity 7.3 % 5.0 % 0.139
 Thoracic deformity 84.4 % 74.8 % 0.001
 Lumbar deformity 31.3 % 36.2 % 0.122
 Intraspinal defects 35.8 % 26.3 % 0.002
 Musculoskeletal defects 22.2 % 13.4 % < 0.001
 Cardiac defects 15.3 % 13.2 % 0.363
 Gastrointestinal defects 2.8 % 3.8 % 0.368
 Urogenital defects 7.3 % 5.3 % 0.214
Parameters p Odds ratio 95 % CI
Multivariate analysis
 Age at fusion < 0.001 1.053 1.036–1.071
 Musculoskeletal defects 0.004 1.670 1.173–2.376
 Thoracic deformity 0.030 1.519 1.042–2.215
 Intraspinal defects 0.264 1.191 0.876–1.620
 Sex 0.595 1.080 0.813–1.433