Table 1 Univariate analysis of intracranial infection after MVD.

From: Analysis of risk factors of intracranial infection after microvascular decompression

Factor

 

Cases

Infection cases

Infection rate (%)

χ2

P

Gender

M

51

14

27.5

8.162

0.004

F

103

10

9.7

Age

<60y

95

11

11.6

3.024

0.082

≥ 60y

59

13

22.0

Smoking

Y

13

4

30.8

2.489

0.115

N

141

20

14.2

BMI

<24

73

9

14.7

0.290

1.118

≥ 24

81

15

15.5

Duration of operation

<4 h

84

7

8.3

7.386

0.007

≥ 4 h

70

17

24.3

Hypertension

Y

45

4

8.9

2.167

0.141

N

109

20

18.3

Diabetes

Y

10

3

30.0

0.721

0.396

N

144

21

14.6

CSF leakage

Y

4

3

75.0

-

0.012

N

150

21

14.0

MACs breach

Y

42

12

28.6

7.404

0.007

N

112

12

10.7

Implants

Y

100

20

20.0

4.227

0.040

N

54

4

7.4

Intra-operative use of antibiotics

Y

40

2

5.0

4.601

0.032

N

114

22

19.3

  

Drainage

Y

34

4

11.8

0.484

0.487

N

120

20

16.7

Hair removal

Partial

116

19

16.4

0.086

0.769

Total

38

5

13.1

Bedtime after surgery

<4d

92

12

13.0

1.121

0.290

≥ 4d

62

12

19.4

Season

Summer

42

7

16.7

0.159

0.924

Spring and autumn

89

13

14.6

Winter

23

4

17.4

Disease types

TN

70

10

14.3

0.221

0.639

HFS

82

14

17.1

  1. M male, F female, MACs mastoid air cells, BMI body mass index, CSF cerebrospinal fluid, TN trigeminal neuralgia, HFS hemifacial spasm.