Table 2. Unadjusted and adjusted Cox regression of factors associated with diarrhoea morbidity in the first 6 months.

			Overall diarrhoea				Persistent diarrhoea				Acute diarrhoea
	Events/		Unadj HR	p	Adj HR	p	Unadj HR	p	Adj HR	p	Unadj HR	p	Adj HR	p
	Child-years		(95% CI)		(95% CI)		(95% CI)		(95% CI)		(95% CI)		(95% CI)
Infant feeding practice
Exclusive breastfeeding		463/1186	1.00		1.00		1.00		1.00		1.00		1.00
Predominant		16/18	1.43	0.049	1.38	0.080	1.51	0.278	1.37	0.407	1.40	0.097	1.38	0.122
Breastfeeding		157/327	(1.00-2.05)		(0.96-1.97)		(0.71-3.22)		(0.65-2.93)		(0.94-2.11)		(0.92-2.07)
Partial breastfeeding		147/255	1.25	0.002	1.19	0.021	1.17	0.356	1.08	0.642	1.28	0.003	1.22	0.018
			(1.09-1.46)		(1.02-1.53)		(0.84-1.61)		(0.78-1.50)		(1.09-1.51)		(1.03-1.44)
Never breastfed			1.26	0.001	1.35	<0.001	1.43	0.012	1.50	0.005	1.21	0.016	1.29	0.001
			(1.09-1.44)		(1.17-1.53)		(1.08-1.89)		(1.13-2.00)		(1.03-1.41)		(1.10-1.51)
Infant HIV status
HIV non-exposed		681/1158	1.00		1.00		1.00		1.00		1.00		1.00
Perinatal infection or		63/483	1.46	<0.001	1.43	<0.001	2.01	<0.001	2.04	<0.001	1.29	0.022	1.27	0.037
unknown timing			(1.21-1.76)		(1.18-1.72)		(1.48-2.94)		(1.44-2.88)		(1.03-1.61)		(1.01-1.58)
Postnatal infection		16/139	1.67	0.017	1.76	0.009	1.05	0.932	1.12	0.849	1.84	0.008	1.95	0.004
			(1.09-2.55)		(1.15-2.69)		(0.33-3.28)		(0.36-3.50)		(1.16-2.90)		(1.23-3.07)
HIV exposed and		5/54	1.67	0.123	1.45	0.271	0.88	0.900	0.82	0.849	1.88	0.074	1.60	0.186
Uninfected			(0.86-3.22)		(0.75-2.79)		(0.12-6.27)		(0.36-3.49)		(0.94-3.78)		(0.79-3.21)
Unknown status		18/22	0.31	<0.001	0.44	<0.001	0.33	0.029	0.44	0.108	0.31	<0.001	0.43	0.002
			(0.19-0.50)		(0.27-0.69)		(0.12-0.89)		(0.17-1.20)		(0.18-0.53)		(0.25-0.73)
Sex
Male		409/924	1.00		1.00		1.00		1.00		1.00		1.00
Female		374/923	0.85	0.002	0.86	0.004	0.72	0.002	0.73	0.004	0.89	0.050	0.90	0.082
			(0.77-0.94)		(0.78-0.96)		(0.58-0.89)		(0.59-0.91)		(0.80-0.99)		(0.81-1.01)
Water Source
Non-Piped		289/613	1.00		1.00		1.00		1.00		1.00		1.00
Piped		486/1216	0.70	<0.001	0.77	<0.001	0.83	0.101	0.91	0.466	0.67	<0.001	0.73	<0.001
			(0.63-0.77)		(0.69-0.86)		(0.66-1.03)		(0.73-1.15)		(0.59-0.75)		(0.65-0.82)
Unknown		8/35.8	0.04	0.001	0.15	0.056	-		-		0.05	0.003	0.18	0.085
			(0.01-0.28)		(0.02-1.05)						(0.01-0.35)		(0.02-1.27)
Enrolment clinic
Rural/Peri urban		704/1615	1.00		1.00		1.00		1.00		1.00		1.00
Urban		78/250	0.47	<0.001	0.52	<0.001	0.42	<0.001	0.43	<0.001	0.48	<0.001	0.55	<0.001
			(0.39-0.56)		(0.43-0.63)		(0.28-0.63)		(0.28-0.65)		(0.39-0.58)		(0.44-0.67)