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Table 1 Participant characteristics by Plasmodium exposure

From: Falciparum but not vivax malaria increases the risk of hypertensive disorders of pregnancy in women followed prospectively from the first trimester

Characteristic

No malaria

P. falciparum

P. vivax

Number

19,424

1047

1733

Maternal age, years, mean (SD)

26.2 (6.5)

25.2 (6.2)

25.4 (6.7)

Gravidity, n (%)

 Primi

4898 (25.2%)

270 (25.8%)

507 (29.3%)

 Multi

14,526 (74.8%)

777 (74.2%)

1226 (70.7%)

Refugee status, n (%)

 Refugee

14,393 (74.1%)

592 (56.5%)

707 (40.8%)

 Migrant

4450 (22.9%)

362 (34.6%)

951 (54.9%)

 Visitor (to refugee camp)

580 (3.0%)

93 (8.9%)

75 (4.3%)

EGA first ANC, weeks, median (range)

9 (−1–14)a

10 (0–14)

9 (0–14)

Anemia at first ANC, n (%)

 None

17,652 (95.5%)

777 (83.9%)

1569 (92.9%)

 Moderate

825 (4.5%)

148 (16.0%)

120 (7.1%)

 Severe

3 (0.02%)

1 (0.1%)

0 (0%)

First trimester weight, kg, mean (SD)

48.0 (7.7)

46.5 (6.1)

46.7 (6.8)

Weight gain, kg, mean (SD)

9.0 (3.9)

8.0 (3.6)

8.2 (3.6)

Chronic HTN, n (%)

 No

19,266 (99.2%)

1040 (99.3%)

1723 (99.4%)

 Yes

158 (0.8%)

7 (0.7%)

10 (0.6%)

Number of consultations, median (range)

20 (1–43)

19 (1–37)

22 (1–38)

Year of delivery, median (range)

2007 (1986–2016)

2000 (1987–2015)

2006 (1987–2016)

EGA delivery, weeks, median (range)

39 (28–44)

39 (28–45)

39 (28–44)

Place of delivery

 Home

4920 (25.3%)

576 (55.0%)

730 (42.1%)

 SMRU

12,909 (66.5%)

441 (39.3%)

815 (47.0%)

 Hospital

1595 (8.2%)

60 (5.7%)

188 (10.9%)

  1. SD standard deviation, EGA estimated gestational age, ANC antenatal clinic, HTN hypertension, SMRU Shoklo Malaria Research Unit (SMRU)
  2. a(−1) permitted given known margins of error of this measurement