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Table 2 Demographic information for the Shoklo Malaria Research Unit (SMRU) severe malaria diagnostic groups and the Mahidol-Oxford Tropical Medicine Research Unit (MORU) / Oxford University Clinical Research Unit (OUCRU) hospitalised patients

From: Severe falciparum malaria in pregnancy in Southeast Asia: a multi-centre retrospective cohort study

Characteristic

SMRU

MORU/OUCRU

Severe malaria with vital organ dysfunction (n = 38)

Severe malaria with hyperparasitaemia only (n = 50)

Severe malaria with severe anaemia only (n = 35)

Hospitalised severe malaria (n = 90)

Age (years)

27 [18–35]

23.5 [19–29]

25 [20–33]

25 [22–30] (n = 56)

Trimester

 First

11% (4/38)

18% (9/50)

14% (5/35)

9% (4/46)

 Second

32% (12/38)

40% (20/50)

51% (18/35)

46% (21/46)

 Third

50% (19/38)

42% (21/50)

34% (12/35)

46% (21/46)

 Postpartum

8% (3/38)a

0

0

0

EGA (week)

30.4 [23.0–34.2]

25.4 [18.1–32.3]

23.9 [16.5–30.2]

26 [21.4–32] (n = 46)

Parity

2 [0–3]

1 [0–2]

1 [0–3]

No data

Gravidity

3 [1–5]

2 [1–3]

2 [1–4]

No data

Body weight (kg)

50 [45–54]

49 [44–52] (n = 49)

46 [42–53]

50 [44.5–54.5] (n = 88)

Fever > 37.5 °C on admissionb

55% (16/29)

45% (21/47)

53% (18/34)

60% (44/73)

Days of fever

3 [2–5] (n = 29)

3 [2–4] (n = 48)

4 [1–5]

6 [4–8] (n = 49)

Species

 Pf mono-infection

91% (32/35)

92% (46/50)

89% (31/35)

No data

 Pf + Pv coinfection

9% (3/35)

8% (4/50)

12% (4/35)

Asexual parasitaemia load (/µL)

179,357 [112,538–372,655] (n = 31)

465,850 [409,958–531,288]

42,001 [16,052–64,433]

60,288 [13,188–31,6512] (n = 81)

Proportion of infected red blood cells (%)

5.4 [3.2–12.2] (n = 31)

12 [10.6–15.1]

2 [0.8–2.7]

2.1 [0.6–12.3] (n = 81)

Gametocytaemia

45% (14/31)

22% (11/50)

23% (8/35)

50% (7/14)

Schizontaemia

29% (9/31)

16% (8/50)

0% (0/35)

No data

Malaria pigment

87% (20/23)

79% (30/38)

33% (6/18)

89% (47/53)c

Haematocrit (%)

25 [19–29.5] (n = 28)

29 [25–33] (n = 48)

17 [16–18]

21 [17–26] (n = 73)

No previous ANC visits

32% (12/38)

28% (14/50)

37% (13/35)

No data

Days since last ANCd

14 [10–25] (n = 26)

13.5 [9–26.5] (n = 36)

18 [7–35] (n = 22)

No data

Treatment

 IV/IM artesunate

71% (24/34)

18% (9/50)

3% (1/35)

34% (31/90)

 IV/IM artemether

13% (4/34)

0

0

17% (15/90)

 IV/IM quinine

13% (4/34)

2% (1/50)

6% (2/35)

49% (44/90)

 Oral ABT

0

58% (29/50)

66% (23/35)

0

 Oral ABT + rescue IV

6% (2/34)

20% (10/50)

0

0

 Oral quinine

0

2% (1/50)

26% (9/35)

0

  1. ABT artemisinin-based therapy (either artesunate monotherapy, artesunate + clindamycin, or artemisinin-based combination therapy), ANC antenatal care, EGA estimated gestational age, IM intramuscular, IV intravenous, Pf Plasmodium falciparum, Pv Plasmodium vivax
  2. Median [interquartile range] is shown. Severe anaemia is defined as a haemoglobin < 7 g/dL (or haematocrit < 20%) with a parasite count > 10,000/µL, and hyperparasitaemia is defined as more than asexual parasitaemia of > 10%. The number of patients assessed is shown in round brackets if not all were assessed. Two patients with both hyperparasitaemia and severe anaemia and another patient with hyperparasitaemia with hypoglycaemia on quinine were categorised into the uncomplicated hyperparasitaemia group
  3. aPostpartum day 2, 2, 24
  4. bFever at any time was present in 29/32 in hyperparasitaemia only group, 32/35 in severe anaemia only group and 29/32 in severe malaria with organ dysfunction group
  5. cMalaria pigment was assessed quantitatively in the MORU cohorts but was converted to presence or not in order to pool with data of the SMRU cohort
  6. dOnly women who started their ANC before severe malaria episode are included