Table 3.

Association of full susceptibility and resistance to five different antimicrobials of Campylobacter spp. with bacterial species, animal species, and year. Data from 2010–2016.

Antimicrobial	Covariate	Coefficient of Regression	Standard Error	Wald	df 1	p-Value	Odds Ratio	95% Confidence Interval of Odds Ratio
Full Suscep-tibility	Year	0.006	0.039	0.025	1	0.875	1.006	0.93–1.09
	C. coli vs. C. jejuni	−2.149	0.215	100.100	1	<0.001	0.117	0.08–1.18
	Broilers vs. turkeys	0.312	0.140	4.984	1	0.026	1.366	1.04–1.80
	Constant	−13.680	78.706	0.030	1	0.862	0.000
STR	Year	−0.01	0.05	0.01	1	0.915	0.99	0.9–1.1
	C. coli vs. C. jejuni	1.54	0.21	53.20	1	<0.001	4.68	3.09–7.09
	Broilers vs. turkeys	−0.26	0.21	1.57	1	0.211	0.77	0.51–1.16
	Constant	7.29	98.89	0.01	1	0.941	1.47 × 103
NAL	Year	0.08	0.03	7.67	1	0.006	1.09	1.03–1.16
	C. coli vs. C. jejuni	1.42	0.13	125.54	1	<0.001	4.16	3.24–5.33
	Broilers vs. turkeys	−0.27	0.11	5.47	1	0.019	0.77	0.61–0.96
	Constant	−169.74	61.49	7.62	1	0.006	0.00
CIP	Year	0.07	0.03	4.99	1	0.025	1.08	1.01–1.15
	C. coli vs. C. jejuni	1.53	0.15	109.56	1	<0.001	4.60	3.46–6.12
	Broilers vs. turkeys	−0.32	0.12	6.90	1	0.009	0.73	0.57–0.92
	Constant	−147.48	66.41	4.93	1	0.026	0.00
TET	Year	−0.08	0.03	7.14	1	0.008	0.92	0.87–0.98
	C. coli vs. C. jejuni	1.55	0.12	163.00	1	<0.001	4.73	3.73–6.01
	Broilers vs. turkeys	−0.33	0.11	8.97	1	0.003	0.72	0.58–0.89
	Constant	165.45	61.81	7.16	1	0.007	7.1 × 1071
ERY	Year	−0.33	0.04	60.89	1	<0.001	0.72	0.66–0.78
	C. coli vs. C. jejuni	3.27	0.28	140.01	1	<0.001	26.23	15.27–45.05
	Broilers vs. turkeys	−0.53	0.19	7.62	1	0.006	0.59	0.41–0.86
	Constant	659.84	85.04	60.20	1	<0.001	3.6 × 10286

Coding of variables: Resistant (1) vs. susceptible (0) for NAL (nalidixic acid), CIP (ciprofloxacin), ERY (erythromycin), TET (tetracycline), STR (streptomycin); Fully susceptible (1) vs. resistant to ≥1 antimicrobial (0); C. coli (1) vs. C. jejuni (0); Broilers (1) vs. turkeys (0). ¹ df: degrees of freedom.