Table 1 Characteristics of study participants
From: Infant sex modifies associations between placental malaria and risk of malaria in infancy
Characteristic | Maternal IPTp arm | |
|---|---|---|
Monthly SP (N = 327) | Monthly DP (N = 329) | |
Maternal characteristics at enrolment | ||
 Age in years, mean (SD) | 24.0 (5.9) | 24.0 (5.7) |
 Gravidity, n (%) | ||
  Primigravida/secundigravida | 152 (46.5%) | 156 (47.4%) |
  Multigravida | 175 (53.5%) | 173 (52.6) |
 House-hold type, n (%) | ||
  Modern House | 77 (23.6%) | 71 (21.6%) |
  Traditional House | 250 (76.5%) | 258 (78.4%) |
 Parasite prevalence by microscopy or qPCR, n (%) | ||
  No parasites | 53 (16.2%) | 63 (19.2%) |
  Sub-microscopic parasitaemia | 111 (33.9%) | 88 (26.8%) |
  Microscopic parasitaemia | 163 (49.9%) | 178 (54.1%) |
Maternal characteristics during pregnancy | ||
 Parasite prevalence by microscopy, n/N (%)a | 797/2212 (36.0%) | 355/2260 (15.7%) |
 Incidence of malaria (episodes/ppy) | 0.59 | 0.09 |
Placental malaria status | ||
 Placental malaria status, n (%) | ||
  No PM | 119 (36.4%) | 232 (70.5%) |
  Active PM | 71 (21.7%) | 7 (2.1%) |
  Past PM (Mild-moderate pigment) | 97 (29.7%) | 84 (25.5%) |
  Past PM (Severe pigment) | 40 (12.2%) | 6 (1.8%) |
  Characteristics of infants at birth | ||
  Preterm birth, n (%) | 25 (7.7%) | 17 (5.2%) |
  Gestation age in weeks, mean (SD) | 39.4 (1.9) | 39.6 (1.6) |
  Low birth weight, n (%) | 33 (10.1%) | 25 (7.6%) |
  Birth weight in grams, mean (SD) | 3055 (505) | 3024 (409) |
  Female sex, n (%) | 161 (49.2%) | 175 (53.2%) |