Table 2 Univariate analysis and multivariate analysis of LOS risk factors

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