Variables

β

SE

95% CI of β

P value

Lower

Upper

Age

0

0.007

-0.014

0.013

0.953

Sex

 Male (Ref.)

 Female

0.144

0.185

-0.22

0.509

0.436

Grade

 Mild (Ref.)

 Moderate

0.425

0.249

-0.065

0.916

0.089

 Severe

-0.394

0.675

-1.725

0.936

0.56

Op type

 Elective (Ref.)

 Emergency

0.137

0.328

-0.509

0.783

0.676

Total score

 0 to 3 (Ref.)

 4 to 12

1.777

0.238

1.309

2.246

< 0.001^*

 ≧ 13

4.565

0.377

3.822

5.307

< 0.001^*

Drainage

 No (Ref.)

 Yes

0.084

0.368

-0.81

0.641

0.819

Bleeding

 < 100 ml (Ref.)

 ≧ 100 ml

0.907

0.461

-0.003

1.817

0.051