Table 3 The Stratification Analysis of NTS Infection.

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

Variables	Without bowel resection			With bowel resection			cHR	(95% CI)	aHR†	(95% CI)
Variables	n	PY	IR	n	PY	IR	cHR	(95% CI)	aHR†	(95% CI)
Gender
Female	14	88,765	1.58	20	85,661	2.33	1.51	(0.76, 3.00)	1.61	(0.81, 3.19)
Male	23	104,137	2.21	36	102,609	3.51	1.59	(0.94, 2.68)	1.63	(0.96, 2.75)
Age, year
18–30	1	22,053	0.45	1	21,707	0.46	1.07	(0.07, 17.1)	1.71	(0.10, 30.2)
31–40	3	27,077	1.11	9	26,366	3.41	3.19	(0.86, 11.8)	3.66	(0.94, 14.2)
41–50	3	35,047	0.86	3	35,674	0.84	0.97	(0.19, 4.80)	1.07	(0.21, 5.34)
> 50	30	108,726	2.76	43	104,523	4.11	1.49	(0.93, 2.38)	1.54	(0.96, 2.45)
Occupation
Officer	14	86,403	1.62	24	88,454	2.71	1.70	(0.88, 3.28)	1.77	(0.92, 3.43)
Worker	8	45,223	1.77	8	43,174	1.85	1.03	(0.38, 2.75)	1.07	(0.40, 2.88)
Farmer	0	3893	0.00	1	3266	3.06
Fisher	9	33,987	2.65	12	31,554	3.80	1.44	(0.60, 3.41)	1.44	(0.61, 3.43)
Others	6	23,397	2.56	11	21,821	5.04	2.01	(0.74, 5.44)	2.02	(0.75, 5.47)
Comorbidities
Hypertension
No	16	145,886	1.10	37	147,097	2.52	2.31	(1.28, 4.15)**	2.34	(1.3, 4.22)**
Yes	21	47,017	4.47	19	41,173	4.61	1.04	(0.56, 1.93)	1.07	(0.58, 2.00)
Diabetes
No	24	167,344	1.43	48	165,517	2.90	2.04	(1.25, 3.33)**	2.11	(1.29, 3.46)**
Yes	13	25,559	5.09	8	22,753	3.52	0.70	(0.29, 1.68)	0.74	(0.30, 1.78)
Hyperlipidemia
No	30	179,471	1.67	54	178,879	3.02	1.82	(1.16, 2.84)**	1.91	(1.22, 2.98)**
Yes	7	13,432	5.21	2	9392	2.13	0.41	(0.09, 2.00)	0.37	(0.08, 1.78)
Coronary artery disease
No	29	174,143	1.67	50	173,698	2.88	1.74	(1.10, 2.75)*	1.82	(1.15, 2.88)*
Yes	8	18,759	4.26	6	14,572	4.12	0.96	(0.33, 2.76)	0.90	(0.31, 2.58)
Cerebrovascular accident
No	34	176,656	1.92	51	176,663	2.89	1.51	(0.98, 2.33)	1.59	(1.03, 2.46)*
Yes	3	16,247	1.85	5	11,607	4.31	2.34	(0.56, 9.79)	2.21	(0.53, 9.27)
Chronic kidney disease
No	35	188,352	1.86	51	184,691	2.76	1.50	(0.97, 2.30)	1.56	(1.01, 2.39)*
Yes	2	4551	4.39	5	3579	13.97	3.19	(0.62, 16.5)	2.63	(0.50, 13.8)
COPD
No	29	182,097	1.59	51	180,545	2.82	1.78	(1.13, 2.82)*	1.85	(1.17, 2.93)**
Yes	8	10,806	7.40	5	7725	6.47	0.86	(0.28, 2.62)	0.87	(0.28, 2.70)
Chronic liver disease
No	35	184,434	1.90	53	181,667	2.92	1.55	(1.01, 2.37)*	1.62	(1.05, 2.48)*
Yes	2	8468	2.36	3	6603	4.54	1.95	(0.33, 11.7)	1.88	(0.31, 11.3)
Autoimmune disease
No	37	190,628	1.94	52	186,596	2.79	1.45	(0.95, 2.21)	1.51	(0.99, 2.31)
Yes	0	2274	0.00	4	1674	23.89
Psoriasis
No	37	192,392	1.92	56	188,011	2.98	1.56	(1.03, 2.37)*	1.51	(0.99, 2.31)
Yes	0	510	0.00	0	259	0.00
Vasculitis
No	37	192,762	1.92	56	188,204	2.98	1.56	(1.03, 2.37)*	1.64	(1.08, 2.48)*
Yes	0	141	0.00	0	67	0.00
IBD
No	37	188,948	1.96	54	183,783	2.94	1.52	(1.00, 2.3)	1.59	(1.04, 2.42)*
Yes	0	3955	0.00	2	4487	4.46

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.
^†Adjusted by age, hypertension, diabetes, coronary artery disease, chronic kidney disease, COPD and rheumatoid autoimmune disease.
*p value < 0.05, **p value < 0.01, ***p value < 0.001.

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Table 3 The Stratification Analysis of NTS Infection.

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