Table 3. Prevalence of individual protozoan species amongst migrant workers according to nationality, employment sector, education, accommodation type and years of residence in Malaysia.

			Prevalence (%) ± 95% confidence limits
Factor	Level	n	Entamoeba	Giardia	Cryptosporodium
Nationality
	Indonesia	167	13.8 [8.58–21.12]	8.4 [4.46–14.88]	1.2 [0.17–5.13]
	Bangladesh	70	2.9 [0.61–9.70]	10.0 [4.82–19.14]	2.9 [0.61–9.70]
	Myanmar	23	13.0 [3.66–32.35]	8.7 [1.57–27.81]	4.3 [0.23–21.25]
	India	47	12.8 [4.59–28.56]	10.6 [3.35–26.30]	10.6 [3.35–26.30]
	Nepal	81	13.6 [7.00–24.50]	17.3 [9.56–28.64]	2.5 [0.38–10.00]
Employment Sector
	Construction	47	2.1 [0.12–14.67]	8.5 [2.23–23.41]	2.1 [0.12–14.67]
	Manufacturing	61	11.5 [6.06–20.22]	14.8 [8.38–24.12]	3.3 [0.88–9.62]
	Plantation workers	71	1.4 [0.14–7.63]	8.5 [3.69–17.34]	1.4 [0.14–7.63]
	Food services	104	15.4 [10.86–21.19]	13.5 [9.22–19.01]	7.7 [4.65–12.40]
	Domestic services	105	19.0 [13.90–25.38]	8.6 [5.31–13.52]	0 [0–1.96]
Educational Level
	Primary only	166	9.0 [4.99–15.57]	9.0 [4.99–15.57]	3.0 [1.00–7.71]
	High school	160	15.6 [10.15–22.95]	13.8 [8.66–20.89]	3.1 [1.10–7.76]
	University	8	0 [0–36.46]	0 [0–36.46]	0 [0–36.46]
	No formal education	54	9.3 [4.69–16.96]	9.3 [4.69–16.96]	3.7 [1.17–9.72]
Accommodation
	Hostel/ Employer	272	9.6 [6.95–12.97]	12.1 [9.18–15.81]	3.7 [2.16–6.06]
	Own/rented house	116	16.4 [11.47–22.62]	7.8 [4.57–12.79]	1.7 [0.51–5.05]
Years of residence
	Less than 1 year	134	13.4 [8.75–19.79]	16.4 [11.22–23.18]	2.2 [0.72–6.15]
	More than 1 year	254	10.6 [7.92–14.03]	7.9 [5.60–10.96]	3.5 [2.10–5.81]