Skip to main content

Table 2 Comparative indicators of Parascreen™, when using PCR and EM as gold standards.

From: Field evaluation of a rapid diagnostic test (Parascreen™) for malaria diagnosis in the Peruvian Amazon

gold standard Results by Parascreen™
  Plasmodium
Species
Sensitivity
[%(95%CI)] a
Specificity
[%(95%CI)]
PPV b
[%(95%CI)]
PPN c
[%(95%CI)]
Likehood ratio
       Positive test Negative test
EM non-P. falciparum 77.1
(67.0-84.4)
97.6
(94.8-98.9)
91.4
(82.5-96.0)
92.7
(89.0-95.3)
32 0.22
  P. falciparum 53.5
(30.1-75.2)
98.7
(96.8-99.5)
66.7
(39.1-86.2)
97.8
(95.6-98.9)
42.27 0.47
PCR non-P. falciparum 76.1
(66.3-83.8)
99.2
(97.0-99.8)
97.1
(90.0-99.2)
92
(88.1-94.7)
92.51 0.24
  P. falciparum 81.8
(52.3-94.9)
99.1
(97.3-99.7)
75
(46.8-91.1)
99.4
(97.7-99.8)
87.27 0.18
  1. a.- Confidence interval at 95%.
  2. b.- Positive predictive value.
  3. c.- Negative predictive value.