A cross-sectional household cluster serosurvey of hepatitis C virus antibodies in an urban slum of Cairo, Egypt in 2004

Table 4 Differences in toileting facilities and crowding between HCV-positive and HCV-negative volunteers in Manshiet Nasser, 2003

Probable risk factors	HCV^a
	Positive, n(%)	Negative n(%)	Crude P.R.	Adjusted PR (95 % CI)^b	P value
	n = (180)	n = (1989)	Crude P.R.	Adjusted PR (95 % CI)^b	P value
The floor is made of earth & sand	12/179 (7)	100/1984 (5)	1.4	1.0 (0.6–1.7)
Traditional latrine	148/179 (83)	1384/1984 (70)	2.0	2.0 (1.4–2.9)	<0.001
Use covered pit/uncovered pit for sanitation^c	63/179 (35)	537/1984 (27)	1.4	1.3 (1.0–1.9)	<0.05
More than three persons per bedroom	55/178 (31)	596/1978 (30)	1.0	1.2 (0.8–1.6)
No hand washing facility	36/179 (20)	326/1984 (16)	1.3	1.2 (0.8–1.6)

^aNumbers may not add up to (n) or (100 %) due to missing answers/eligibility to the question
^bPrevalence Ratio Adjusted for Age (95 % Confidence Interval)
^cCompared to municipal

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