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Table 3 Predictive values of blood smear (BS) results at Primary Health Care (PHC) facilities in the clinical algorithm + microscopy intervention arm

From: Impact of training in clinical and microscopy diagnosis of childhood malaria on antimalarial drug prescription and health outcome at primary health care level in Tanzania: A randomized controlled trial

PHC Facilities BS positive rate (PHC microscopy reading) n/N (%) BS positive rate (MUCHS reading) n/N (%) Positive predictive Value % Negative predictive Value %
Chalinze 111/200 (55.5) 59/200 (29.5) 48.6 94.4
Ubena 140/180 (77.8) 83/176 (47.2) 51.1 66.7
Mbwewe 86/197 (43.7) 88/191 (46.1) 68.7 71.3
Kikongo 44/197 (22.3) 68/194 (35.1) 70.5 75.3
Mwanabwito 150/199 (75.4) 63/176 (36.4) 44.2 86.4
Total 531/973 (54.6) (CI: 51.4, 57.7) 361/934 (38.7)* (CI:35.6, 41.8) 53.4 (SD 12.1) (CI: 49.0, 58.0) 78.6 (SD 11.4) (CI: 74.0, 82.0)
  1. CI = (95% confidence interval).
  2. *39 Blood smear results missing/not done at reference laboratory by experienced microscopist