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Table 2 Clinical and prognostic features of microscopy negative (N = 10) and microscopy positive (N = 169) patients enrolled in clinical trial with all three bands positive on RDT 1

From: Use of a three-band HRP2/pLDH combination rapid diagnostic test increases diagnostic specificity for falciparum malaria in Ugandan children

 

Microscopy negative (N = 10)

Microscopy positive (N = 169)

P value

Parasite density (geometric mean, range)

0

17,700 (80–696,000)

-

Duration of fever prior to presentation (days), median (IQR)

3.5 (2.0-6.0)

3.0 (2.0-4.0)

0.78

Prostration, n/N (%)

8/10 (80)

155/169 (92)

0.22

Coma, n/N (%)

5/10 (50)

101/169 (60)

0.74

Convulsions, n/N (%)

8/10 (80)

135/169 (80)

1.0

BCS, median (IQR)

3 (2–4)

2 (2–3)

0.33

Deep breathing, n/N (%)

2/10 (20)

84/169 (50)

0.10

LODS2, median (IQR)

2 (1–2)

2 (1.5-3)

0.067

pH <7.353, n/N (%)

2/9 (22)

40/137 (29)

1.0

Lactate > 5 mmol/L3, n/N (%)

2/10 (20)

57/161 (35)

0.50

Base deficit > 8 mmol/L3, n/N (%)

4/9 (44)

65/137 (47)

1.0

  1. 1One additional patient was diagnosed with P. ovale based on microscopy, but PCR identified P. falciparum mono-infection.
  2. 2Lambaréné Organ Dysfunction Score.
  3. 3pH < 7.35[20], lactate > 5 mmol/L and base deficit > 8 mmol/L[21] (lactic acidosis) have been identified as markers of poor prognosis in severe malaria.