Skip to main content

Table 2 Sensitivity and specificity of RDTs in the longitudinal study and CSS in Korogwe and Muheza districts

From: Accuracy of malaria rapid diagnostic tests in community studies and their impact on treatment of malaria in an area with declining malaria burden in north-eastern Tanzania

   Positive rate   
Study type Category (n) Microscopy
(%, 95% CI)
RDTs
(%, 95% CI)
Sensitivity
(%, 95% CI)
Specificity
(%, 95% CI)
Longitudinal study Under-fives + fever (n = 2116) 27.8 (25.9-29.7) 31.9(29.9-33.9) 92.1(89.9-94.3) 91.3(89.9-92.7)
  Under-fives, no fever(n = 2159) 12.1(10.7-13.5) 14.3(12.8-15.8) 85.4(81.1-89.7) 95.6(94.7-96.5)
  Above 5 years + fever (n = 3750) 37.3(36.0-39.0) 48.6(47.0-50.2) 92.3(90.9-93.1) 77.5(75.8-79.8)
  Above 5 years, no fever (n = 10186) 15.0(14.3-15.7) 22.1(21.3-22.9) 84.6(82.8-86.4) 89.0(88.2-89.6)
  Overall (18213) 20.8(20.2-21.4) 27.8(27.1-28.5) 88.6(87.5-89.7) 88.2(87.7-88.7)
CSS Under-fives + fever (n = 83) 32.5(22.4-42.6) 41.0(30.4-51.6) 96.3(89.0-100.0) 85.7(76.5-94.9)
  Under-fives, no fever(n = 1940) 8.0(6.8-9.2) 10.5(9.1-11.9) 66.7(59.3-74.1) 94.4(93.3-95.5)
  Above 5 years + fever (n = 96) 40.9(31.1-50.7) 41.9(32.0-51.8) 89.5(79.8-99.2) 90.9(83.3-98.5)
  Above 5 years, no fever (n = 3906) 22.6(21.3-23.9) 18.0(16.8-19.2) 60.5(57.1-63.9) 94.5(93.7-95.3)
  Overall (n = 5759) 18.2(17.2-19.2) 16.2(15.2-17.2) 63.4(59.8-67.1) 94.3(93.6-95.0)
  1. CSS = Cross-sectional surveys, RDT = malaria rapid diagnostic tests, % = percentage,°C = degree centigrade, 95% CI = 95% confidence interval