Table 3.

Within subject analysis of measured Hb for various study populations

		Study Subgroup
		School Children	Pre-School Children	Pregnant Women	Adult Men	Non-pregnant Women
Intraclass correlation
	Coefficient	0.997	0.995	0.986	0.996	0.993
	95% CI	0.996 to 0.998	0.994 to 0.997	0.980 to 0.991	0.995 to 0.998	0.990 to 0.995
Estimated Reliability		0.999	0.998	0.995	0.999	0.998