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Table 1 Clinical variables included in the ten sets, used in the logistic regression analyses

From: Prognostic indicators in adults hospitalized with falciparum malaria in Western Thailand

Variable

Bed side

Bedside and simple lab

WHO 1990

WHO 2000

Adapted AQ

Adapted AQ plus late stages

BCAM

RCAM

MSA

MPI

Seizures before admission

X

X

X

X

-

-

-

-

-

-

Clinical anaemia

X

X

-

-

-

-

-

-

-

-

Clinical jaundice

X

X

X

X

-

-

-

-

-

-

Bleeding

-

-

X

X

-

-

-

-

-

-

Blackwater fever

-

-

X

X

-

-

-

-

-

-

Temperature

X

X

X

-

-

-

-

-

-

-

Pulse

X

X

-

-

-

-

-

-

-

-

Respiratory rate

X

X

-

X

-

-

-

X

-

-

Respiratory distress, requiring mechanical ventilation

-

-

-

-

-

-

-

-

X

-

Liver palpable

X

X

-

-

-

-

-

-

-

-

GCS Total

X

X

X

X

X

X

X

X

X

X

Pulmonary oedema

-

-

X

X

-

-

-

-

-

-

  1. X = included, - = not included.
  2. BCAM score uses serum bicarbonate as a marker of acidosis with cut-off values of ≥24 mmol/L (score = 0) for normal, ≥15- < 24 mmol/L (score = 1) for deranged, and <15 mmol/L (score = 2) for very deranged along with thresholds for coma of GCS ≤14 and GCS ≤10 [23]. The acidosis and coma scores were summed to give the BCAM score, ranging from 0–4.
  3. RCAM score uses respiratory rate as a surrogate marker for acidosis with cut offs of <20 breaths/min (score = 0) for normal, 20–39 breaths/min (score = 1) for deranged, and ≥40 breaths/min (score = 2) for very deranged.
  4. The MSA score was defined as sum of 1 (severe anaemia [haemoglobin, <5 g/dL]) + 2 (acute renal failure [serum creatinine, >3 mg/dL or 250 μmol/L]) + 3 (respiratory distress, requiring mechanical ventilation) + 4 (cerebral malaria [GCS <11]), in which each variable was scored as 0 or 1, depending on its absence or presence, respectively [22].