Skip to main content

Table 2 Frequency, sensitivity and specificity of symptoms for clinical malaria (symptomatic Plasmodium falciparum parasitaemia) in individuals ≥ 5 years of age

From: Sensitivity of fever for diagnosis of clinical malaria in a Kenyan area of unstable, low malaria transmission

Symptoms Pf pos,an (%) Pf neg,bn (%) P value Sensitivity (%) Specificity (%)
Headache 167 (89) 2055 (79) 0. 001 88. 8 20. 9
Fever 105 (56) 1185 (46) 0. 01 55. 9 54. 4
Appetite loss 69 (37) 834 (32) 0. 19 36. 7 67. 9
Chills 68 (36) 457 (18) <0. 001 36. 2 82. 4
Joint pains 57 (30) 641 (25) 0. 08 30. 3 75. 3
Vomiting 48 (26) 460 (18) 0. 01 25. 5 82. 3
Malaise 36 (19) 325 (13) 0. 01 19. 1 87. 5
Backache 35 (19) 494 (19) 0. 89 18. 6 81
Nausea 26 (14) 447 (17) 0. 23 13. 8 82. 8
Diarrhoea 6 (3) 323 (12) <0. 001 3. 2 87. 6
Jaundice 2 (1) 25 (1) 0. 89 1. 1 99
  1. aTotal N for Pf pos, N = 188.
  2. bTotal N for Pf neg, N = 2598.