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Table 7 Sensitivity, specificity, predictive value and odds ratio of the haematological parameters in diagnosis of malaria

From: Impact of Plasmodium falciparum infection on haematological parameters in children living in Western Kenya

Variable Sensitivity* Specificity* PPV* NPV* OR LR
(95% CI) (95% CI) (95% CI) (95% CI) (CI)
Platelets< 150000/µL 90 (86,95) 61 (57,66) 69 (64,73) 86 (84,89) 13.8 (7.2,24.8) 2.3
Hb<10g/dl 74 (69,78) 65 (61,68) 60 (55,64) 78 (74,81) 5 (3.9,6.7) 2.1
Monocytes count >1500/µL 74 (67,79) 54 (50,57) 38 (35,43) 84 (80,87) 3.34(2.5, 4.6) 1.6
Lymphocytes count<2000/µL 75(59,87) 46(43,49) 6(4,8) 97(95,98) 2.7(1.3,5.8) 1.4
WBC>17000/uL 70 (56,81) 46 (43,49) 8 (6,1) 96 (93,98) 2.1 (1.1,3.7) 1.3
Neutrophils count >7500/µL 72(60,82) 38(34,42) 10(7,12) 93(90,96) 1.6(0.9,2.8) 1.2
  1. PPV- Positive Predictive Value, NPV-Negative Predictive value, LR- Likelihood ratio, *Percent, OR=odds ratio