Table 6.

Analysis of epidemiologic risk factors for S. aureus and MRSA nasal carriage among primary school children, Jimma town, 2011

Risk factors		Staphylococcus				P-value	Methicillin resistance S.aureus				P-value
		S.aureus		CONS			Positive		Negative
		NO.	%	NO.	%		NO.	%	NO.	%
Age	5-10	86	59.7	63	39.4	0.001	21	77.8	65	55.6	0.049
	11-15	58	40.3	97	60.6		6	22.2	52	44.4
Sex	Female	73	50.7	83	51.9	0.909	23	85.2	50	42.7	0.000
	Male	71	49.3	77	48.1		4	14.8	67	57.3
Hospitalization in the past 1 years	Present	9	6.3	8	5.0	0.803	4	14.8	5	4.3	0.041
	Absent	135	93.8	152	95.0		23	85.2	112	95.7
Antibiotic usage in the past 4 weeks	Present	29	20.1	21	13.1	0.121	7	25.9	22	18.8	0.429
	Absent	115	79.9	139	86.9		20	74.1	95	81.2
Ways of antibiotic usage	Completely Used	20	69.0	13	65.0	1.00	5	71.4	15	68.2	1.00
	Not-Completely Used	9	31.0	7	35.0		2	28.6	7	31.8
Present presence of respiratory infection	Present	15	10.4	16	10.0	1.00	5	18.5	10	8.5	0.159
	Absent	129	89.6	144	90.0		22	81.5	107	91.5
Number of family members	2-4	46	31.9	55	34.4	0.868	9	33.3	37	31.6	1.00
	5-6	70	48.6	73	45.6		13	48.1	57	48.7
	>6	28	19.4	32	20.0		5	18.5	23	19.7
Presence of health institution worker in the family	Present	17	11.8	10	6.3	0.107	2	7.4	15	12.8	0.531
	Absent	127	88.2	150	93.8		25	92.6	102	87.2
Family member hospitalization in the past 1 years	Present	18	12.5	14	8.8	0.289	8	29.6	10	8.5	0.007
	Absent	126	87.5	146	91.3		19	70.4	107	91.5
Number of children in class room	21-40	29	20.1	57	35.6	0.000	5	18.5	24	20.5	0.016
	41-60	70	48.6	64	40.0		8	29.6	62	53.0
	>60	45	31.3	39	24.4		14	51.9	31	26.5

Where: CONS Coagulase-negative Staphylococcus, MRSA Methicillin Resistance S.aureus.