Table 5.

Risk of CC ≥1 year after salmonellosis, by serovar and time post-infection

	CC (overall)	Proximal colon	Distal colon
	HR (95% CI)a	HR (95% CI)a	HR (95% CI)a
Salmonella (total)
Unexposed	ref	ref	ref
1–5 years	1.09 (0.85–1.38)	1.29 (0.95–1.75)	0.88 (0.60–1.29)
5–10 years	0.96 (0.76–1.22)	1.03 (0.75–1.42)	0.86 (0.60–1.24)
>10 years	0.97 (0.80–1.16)	1.03 (0.81–1.32)	0.87 (0.65–1.16)
Salmonella Enteritidis
Unexposed	ref	ref	ref
1–5 years	1.22 (0.88–1.70)	1.30 (0.83–2.03)	1.12 (0.69–1.83)
5–10 years	0.98 (0.71–1.36)	1.02 (0.66–1.58)	0.91 (0.56–1.48)
>10 years	0.97 (0.76–1.23)	0.95 (0.68–1.33)	0.97 (0.68–1.38)
Salmonella Typhimurium
Unexposed	ref	ref	ref
1–5 years	0.86 (0.51–1.45)	0.92 (0.46–1.83)	0.78 (0.35–1.73)
5–10 years	0.45 (0.23–0.90)*	0.64 (0.29–1.42)	0.24 (0.06–0.95)*
>10 years	0.87 (0.57–1.34)	1.09 (0.64–1.83)	0.61 (0.29–1.29)
Other Salmonella serovars
Unexposed	ref	ref	ref
1–5 years	1.05 (0.65–1.69)	1.62 (0.96–2.74)	0.52 (0.20–1.39)
5–10 years	1.45 (0.97–2.17)	1.47 (0.85–2.53)	1.41 (0.78–2.54)
>10 years	1.04 (0.70–1.55)	1.20 (0.72–1.99)	0.83 (0.43–1.60)

HR, hazard ratio; ref, reference.

^aAdjusted for sex, year of birth, geographical region, IBD status and marital status.

*P-value <0.05; **P-value <0.01; ***P-value <0.001.