Table 1. Prevalence (%) of C. jejuni by country in which the producer was based, the company providing chickens, the store selling the chickens and the weight class of samples chickens.

Factor	Level*	N	%	CL95	DoF	χ2	P
Country	Qatar	149	53.0	44.54–61.29
	Saudi Arabia	233	45.9	41.24–50.61	1	1.83	0.176
Company	1	149	53.0	44.54–61.29
	2	115	51.3	43.85–58.76
	3	53	39.6	30.10–49.86
	4	43	48.8	32.63–65.42
	6	22	27.3	12.61–50.00	4	7.40	0.116
Store	1	148	58.1	49.67–66.22
	2	68	47.1	35.96–58.54
	3	166	32.35	32.35–49.94	2	9.33	0.009
Weight class	1	117	54.7	47.19–62.00
	2	105	41.9	35.00–49.05
	3	160	48.8	39.95–57.57	2	3.64	0.162

The sample size was n = 382

* See Materials and methods for further information about each of the factor levels.