Inter-rater Variability in Malaria Microscopy at the LEKMA Hospital, Ghana

Table 3

Sample estimates and inter-rater agreement (Kappa index) for the prevalence of parasitaemia above a specific density cutoff comparing two rater microscopy parasite density counts.

Cut-off density/μl	Rater A	Rater B	Expected	Kappa index
	(%)	(%)	(%)
1000	14.0	14.5	15.0	0.82
2500	12.0	13.0	13.0	0.77
5000	13.0	14.5	14.5	0.69
10000	15.0	14.5	13.5	0.63
20000	13.5	14.0	15.0	0.58
30000	32.5	29.5	29.0	0.40