Skip to main content

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