Table 9.

Comparison of placental malaria classification by different criteria^*21,²⁴,²⁵,²⁹

Rogerson and others26 (negative = 139, positive = 40)		Galbraith and others 18,44 and Bulmer and others21,22 (negative = 139, positive = 40)				Total
		No infection, P–H–	Past, P–H+	Chronic, P+H+	Acute, P+ and/or H+
No infection	P–H–	139	0	0	0	139
Past infection	P–H+ in fibrinoid deposits	0	19	0	0	19
Initial acute infection	P+H–	0	0	0	3	3
Advanced acute infection	P+H+ in MN and/or in fibrinoid deposits	0	2†	0	11	13
Chronic infection	H+ in fibrinoid deposits	0	0	1	4	5
Total		139	21	1	18	179

^*Classifications were based of presence of hemozoin (H) and Plasmodium (P) parasites. MN = mononuclear cell. Two cases were classified according to some of the authors, but correspondence with others could not be made.

^†Cases failing to meet criteria for a specific classification according to Rogerson and others;²⁶ they had hemozoin in monocytes and absence of parasites.