Table 2. Univariate and multivariate risk factor analyses for infections caused Cryptosporidium spp. and Giardia duodenalis, data available in S2 Table.

Variable	Univariate analysis			Multivariate analysis			Univariate analysis
	Odds ratio [OR]	95% CI	p-value	Odds ratio [OR]	95% CI	p-value	OR	95% CI	p-value
Male gender	1.15	0.59–2.23	0.68				1.01	0.68–1.50	0.96
Age group1	0.74	0.52–1.06	0.10				1.11	0.90–1.39	0.33
Location of residence
In Siem Reap town	1.13	0.52–2.47	0.76				0.74	0.45–1.24	0.26
Outside Siem Reap town	0.79	0.37–1.68	0.54				1.32	0.80–2.16	0.28
Risk factors
Clinical syndromes
Diarrhoea	1.15	0.58–2.29	0.69				1.01	0.67–1.54	0.95
Abdominal pain duration	1.00	0.47–2.14	1.00				1.51	0.94–2.14	0.09
Anaemia Hb (g/dL) if present	1.05	0.39–2.80	0.92				0.69	0.36–1.32	0.26
Malnutrition	4.84	2.00–11.70	<0.0001	9.63	1.67–55.46	0.01	0.62	0.25–1.55	0.31
Presence of wasting	4.13	1.55–10.99	0.005	0.28	0.04–2.11	0.22	0.49	0.17–1.45	0.20
Chronic medical diagnoses	5.4	2.31–12.63	<0.0001	4.51	1.79–11.34	0.001	0.25	0.08–0.84	0.02
Domestic animals at home	0.76	0.37–1.56	0.46				0.90	0.58–1.41	0.64
Cat	0.88	0.44–1.74	0.70				1.02	0.68–1.53	0.91
Dog	0.51	0.26–0.99	0.05				0.93	0.62–1.40	0.72
Birds	3.02	1.23–7.39	0.016	2.99	1.16–7.73	0.02	0.82	0.38–1.78	0.61
Livestock at home	0.67	0.34–1.30	0.24				0.91	0.60–1.39	0.67
Water buffalo	-	-	-				1.11	0.34–3.61	0.86
Chickens	0.88	0.45–1.72	0.72				0.86	0.58–1.28	0.46
Pigs	0.44	0.13–1.47	0.18				0.95	0.55–1.65	0.85
Cattle	0.49	0.20–1.20	0.12				1.10	0.70–1.71	0.69
Ducks	6.19	0.55–69.86	0.14				-	-	-
Main source of drinking water
River	1.43	0.48–4.26	0.52				0.95	0.45–2.01	0.90
Rain	-	-	-				1.08	0.44–2.65	0.86
Well	0.65	0.31–1.39	0.27				1.39	0.82–2.35	0.23
bottled	1.71	0.49–5.98	0.40				0.68	0.25–1.85	0.45
City	0.34	0.05–2.54	0.29				0.55	0.22–1.36	0.20
Pond	1.89	0.62–5.71	0.26				0.96	0.42–2.21	0.93
Water available at house	1.21	0.49–2.98	0.68				0.64	0.39–1.04	0.07
Ever wash hands with soap after defecation	1.02	0.67–1.55	0.93				0.74	0.58–0.95	0.02
Do not wash hands with soap after defecation	0.92	0.39–2.16	0.85				1.97	1.23–3.15	0.005
Place of defaecation
Toilet	1.28	0.66–2.51	0.47				0.78	0.53–1.17	0.23
Forest	0.69	0.33–1.46	0.33				1.13	0.75–1.72	0.56
Farm	0.37	0.13–1.07	0.07				0.72	0.44–1.18	0.19
Outside house	0.74	0.34–1.60	0.45				0.93	0.60–1.45	0.75
In the river	1.43	0.48–4.26	0.52				0.95	0.45–2.01	0.90
Wears shoes	0.51	0.24–1.08	0.08				0.77	0.46–1.28	0.31
Goes to school	0.73	0.09–6.07	0.77				0.93	0.38–2.78	0.93

¹Study participants were subdivided into five age groups for analysis: neonates (≤28 days); infants (29 days-<1 year); 1–5 years; 6–10 years and 11–16 years, none of these ages were significant in the analyses

Significant values are shown in bold (p<0.05)