Table 3

Risk factors for perioperative mortality

Patients
Variable
 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
Cardiovascular

*
 *
 *
*
 *
 *
 *
 *
 *
Respiratory
*


*



*
Connective tissue disorder






*

*
Diabetes







*


Immune suppression
 *





*



Renal



*
 *


*

Perforation
 *
 *
 *
 *
 *
*

*
 *
Abscess




*
*
 *

*
Bleeding











Fistula











Obstruction/stricture











Phlegmon











Age (year)
 86
 80
 60
 80
 83
 85
 86
 65
 84
 82
 77
 84
Sex:F = Female, M = Male
 F
 F
 F
 F
 F
 F
 F
 F
 F
 M
 F
 F

Hussain et al. World Journal of Emergency Surgery 2008 3:5   doi:10.1186/1749-7922-3-5