Table 2.

Analysis of potential associated factors for human herpes virus-6 among blood donor samples (n=620).

Factor	Bivariate analysis				Multi-variate logistic regressionb
	Total n	IgG positive	P-valuea	OR	95% CI	Adjusted P-value
		n	(%)			Lower limit	Upper limit
Gender
Male	606	432	71.3	0.076	1
Female	14	13	92.9		4.70	0.58	38.0	0.147
Nationality
Qatari	204	154	75.5	0.506	1			0.525
Non-Qatari	416	291	70.0
Egyptian	87	67	77.0		1.03	0.56	1.88	0.929
Syrian	86	55	64.0		0.56	0.32	0.98	0.043
Indian	55	35	63.6		0.58	0.30	1.10	0.095
Jordanian	29	18	62.1		0.56	0.25	1.27	0.165
Palestinian	26	20	76.9		1.15	0.43	3.03	0.785
Pakistani	16	11	68.8		0.67	0.22	2.04	0.476
Sudanese	13	11	84.6		1.89	0.40	8.86	0.420
Lebanese	12	8	66.7		0.60	0.17	2.13	0.430
Philippine	11	7	63.6		0.46	0.12	1.71	0.244
Yemeni	10	6	60.0		0.48	0.13	1.77	0.267
Iranian	8	6	75.0		0.97	0.19	5.08	0.975
Other nationalities	63	47	74.6		0.92	0.48	1.76	0.792
Age group (years)
15–24	37	30	81.1	0.519	1			0.676
25–34	241	170	70.5		0.73	0.30	1.80	0.493
35–44	207	153	73.9		0.81	0.33	2.01	0.649
45–54	103	71	68.9		0.63	0.24	1.64	0.345
≥55	32	21	65.6		0.50	0.16	1.55	0.229

IgG, immunoglobulin G; OR, odds ratio; CI, confidence interval.

^aPearson Chi-squared test.

^bVariables entered in the model: gender, nationality and age.