Table 2 Incidence Rate and Hazard Ratio of NTS Infection.

From: The association between bowel resection and the risk of nontyphoidal salmonella infection: a nationwide propensity score-matched cohort study

Variables

NTS infection

cHR

(95% CI)

aHR†

(95% CI)

n

PY

IR

Bowel resection

No

37

192,902

1.92

1.00

–

1.00

–

Yes

56

188,270

2.97

1.56

(1.03, 2.37)*

1.64

(1.08, 2.48)*

Small bowel resection

No

37

192,902

1.92

1.00

–

1.00

–

Yes

29

79,213

3.66

1.93

(1.18, 3.14)**

1.96

(1.20, 3.19)**

Large bowel resection

No

37

192,902

1.92

1.00

–

1.00

–

Yes

28

98,288

2.85

1.52

(0.93, 2.48)

1.59

(0.97, 2.60)

Right hemicolectomy

No

37

192,902

1.92

1.00

–

1.00

–

Yes

12

36,091

3.32

1.77

(0.92, 3.39)

1.96

(1.02, 3.77)*

Transverse colon resection

No

37

192,902

1.92

1.00

–

  

Yes

0

2847

0.00

0.00

   

Left hemicolectomy

No

37

192,902

1.92

1.00

–

1.00

–

Yes

6

12,670

4.74

2.51

(1.06, 5.95)*

2.12

(0.89, 5.04)

Sigmoidectomy

No

37

192,902

1.92

1.00

–

1.00

–

Yes

6

16,997

3.53

1.84

(0.78, 4.37)

1.66

(0.70, 3.96)

Total colectomy

No

37

192,902

1.92

1.00

–

  

Yes

0

3392

0.00

0.00

   

Bowel anastomosis

No

37

192,902

1.92

1.00

–

1.00

–

Yes

11

57,857

1.90

1.01

(0.52, 1.99)

1.18

(0.60, 2.33)

Gender

Female

34

174,426

1.95

1.00

–

  

Male

59

206,746

2.85

1.48

(0.97, 2.26)

  

Age, year

18–30

2

43,760

0.46

1.00

–

1.00

–

31–40

12

53,443

2.25

4.86

(1.09, 21.7)*

4.71

(1.05, 21.1)*

41–50

6

70,720

0.85

1.83

(0.37, 9.07)

1.67

(0.34, 8.31)

 > 50

73

213,249

3.42

7.36

(1.81, 30.0)**

5.25

(1.27, 21.8)*

Occupation

Officer

38

174,857

2.17

1.00

–

  

Worker

16

88,397

1.81

0.83

(0.47, 1.50)

  

Farmer

1

7159

1.40

0.65

(0.09, 4.70)

  

Fisher

21

65,542

3.20

1.48

(0.87, 2.51)

  

Others

17

45,218

3.76

1.73

(0.98, 3.06)

  

Comorbidities

Hypertension

No

53

292,983

1.81

1.00

–

1.00

–

Yes

40

88,190

4.54

2.48

(1.64, 3.75)***

1.61

(1.00, 2.58)*

Diabetes

No

72

332,861

2.16

1.00

–

1.00

–

Yes

21

48,312

4.35

1.98

(1.22, 3.23)**

1.28

(0.76, 2.14)

Hyperlipidemia

No

84

358,349

2.34

1.00

–

  

Yes

9

22,823

3.94

1.66

(0.84, 3.31)

  

Coronary artery disease

No

79

347,841

2.27

1.00

–

1.00

–

Yes

14

33,332

4.20

1.82

(1.03, 3.21)*

0.92

(0.50, 1.70)

Cerebrovascular accident

No

85

353,319

2.41

1.00

–

  

Yes

8

27,854

2.87

1.16

(0.56, 2.41)

  

Chronic kidney disease

No

86

373,043

2.31

1.00

–

1.00

–

Yes

7

8130

8.61

3.62

(1.67, 7.85)**

2.35

(1.06, 5.21)*

COPD

No

80

362,642

2.21

1.00

–

1.00

–

Yes

13

18,530

7.02

3.12

(1.73, 5.61)***

2.18

(1.18, 4.02)*

Chronic liver disease

No

88

366,101

2.40

1.00

–

  

Yes

5

15,071

3.32

1.35

(0.55, 3.34)

  

Autoimmune disease

No

89

377,224

2.36

1.00

–

1.00

–

Yes

4

3948

10.13

4.26

(1.56, 11.59)**

3.83

(1.4, 10.47)**

Psoriasis

No

93

380,403

2.44

1.00

–

  

Yes

0

770

0.00

0.00

   

Vasculitis

No

93

380,965

2.44

1.00

–

  

Yes

0

207

0.00

0.00

   

IBD

No

91

372,731

2.44

1.00

–

  

Yes

2

8442

2.37

0.98

(0.24, 3.97)

  
  1. NTS nontyphoidal salmonella, COPD chronic obstructive pulmonary disease, IBD Inflammatory bowel disease, PY person-year, IR incidence rate per 10,000 person-year, cHR crude hazard ratio, aHR adjusted hazard ratio.
  2. †Adjusted by age, hypertension, diabetes, coronary artery disease, chronic kidney disease, COPD and rheumatoid autoimmune disease.
  3. *p value < 0.05; **p value < 0.01; ***p value < 0.001.
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