Table 2

SSI Distribution based on the factors involved.

Variable

Classification

SSI (+)

SSI (-)

total

P. Val.


N

%

N

%

N

%


Age

Age groups under 25

4

3.7

103

96.3

107

100

<0.001

Age groups 25–65

102

18.1

462

81.9

564

100

Age groups above 65

33

25.2

98

74.8

131

100


Sex

Female

61

15.1

344

84.9

405

100

<0.093

male

78

19.6

319

80.4

397

100


Type Of Wounds

Clean wounds

5

4.6

104

95.4

109

100

<0.001

Clean contaminated wounds

9

4.2

205

95.8

214

100

Contaminated wounds

115

31.3

252

68.7

367

100

Dirty – infected wounds

10

8.9

102

91.1

112

100


Type Of Operation

Urgent

29

14.9

166

85.1

195

100

<0.001

elective

110

18.1

497

81.9

607

100


Operation Duration

Below 1.5 hours

9

5.4

157

94.6

166

100

<0.001

1.5 – 4 hours

121

19.5

501

80.5

622

100

Above 4 hours

9

64.3

5

35.7

14

100


preoperative bed stay

Emergency

24

11.7

181

88.3

205

100

<0.018

1 – 15 days

100

18.6

439

81.4

539

100

More than 15 days

15

25.9

43

74.1

58

100


Shaving Time

One hour before operation

29

14.5

171

85.5

200

100

<0.001

12 hours before operation

110

18.3

492

81.7

602

100


showering Before op.

Taken

80

13.9

497

86.1

577

100

1.00

none

59

26.2

166

76.8

255

100


Body mass index

Under 20

10

17.2

48

82.8

58

100

0.692

Ranging 20.1 – 25

73

16

383

84

456

100

Ranging 25.1 – 30

42

19.5

173

80.5

215

100

Above 30.1

14

19.2

59

80.8

73

100


Razavi et al. BMC Surgery 2005 5:2   doi:10.1186/1471-2482-5-2

Open Data