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Table 3 Positive predictive value (PPV) of clinical signs and symptom for Plasmodium falciparum infection among the 200 pregnant women recruited as cases

From: Clinical signs and symptoms cannot reliably predict Plasmodium falciparum malaria infection in pregnant women living in an area of high seasonal transmission

Signs/Symptoms

n

%

PPV (%)

(95%CI)

Fever

38

19.0

53

(41–64)

History of fever

29

14.5

58

(37–63)

Pain in the joints

6

3.0

25

(6 – 44)

Headache

57

28.5

51

(41 – 61)

Dizziness

3

1.5

47

(41–64)

Vomiting

3

1.5

38

(37–63)

Convulsions

1

0.5

33

(6–79)

Malaise

7

3.5

30

(41 –61)