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Table 4 Cox proportional hazard regression model for discharge time for specialised burn services admitting children in England and Wales

From: Patient outcomes vs. service workload: an analysis of outcomes in the burn service of England and Wales

Variable

Hazard ratio

Standard error

P > z

95% Interval

Available

 

1.0037

0.0063

0.5540

0.9915

1.0161

TBSA (%)

 

0.9357

0.0026

0.0000

0.9305

0.9409

Injury type

Flame

Ref

Flash

1.4917

0.0946

0.0000

1.3174

1.6890

Contact

1.3631

0.0569

0.0000

1.2561

1.4793

Scald

1.2452

0.0464

0.0000

1.1574

1.3396

Chemical

1.2574

0.1083

0.0080

1.0621

1.4887

Other

1.4443

0.0870

0.0000

1.2834

1.6253

Unknown

1.1402

0.1170

0.2010

0.9324

1.3942

Inhalation injury

Absent

Ref

Present

0.5754

0.1108

0.0040

0.3945

0.8391

Total grafts

0

Ref

1

0.6379

0.0188

0.0000

0.6020

0.6758

2

0.4122

0.0265

0.0000

0.3635

0.4674

3

0.2937

0.0223

0.0000

0.2531

0.3408

Bed severity allocation

1

Ref

2

1.0333

0.0954

0.7230

0.8623

1.2383

>3

0.9644

0.1546

0.8210

0.7043

1.3205

Available-bed severity allocation

2*available

0.9554

0.0135

0.0010

0.9293

0.9823

>3*available

0.9386

0.0221

0.0070

0.8963

0.9829

  1. *Interaction.