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Table 1 Characteristics of pregnant women and their neonates

From: Statistical prediction of immunity to placental malaria based on multi-assay antibody data for malarial antigens

Characteristic PM+ (n = 341) PM− (n = 1036) P-value
Age in year, mean (SD) 24.3 (5.4) 26.3 (5.8) < 0.0001
Gravidity, mean (SD) 2.7 (1.9) 3.2 (2.1) < 0.0001
Placental parasitaemia by impression smears in  %, mean (SD) 5.4 (12.4) 0 (0) n/a
Clinic location, n (%)    0.59
 BA-all 194 (56.9%) 607 (58.6%)  
 CM-NHR 147 (43.1%) 429 (41.4%)  
Pre-term delivery, n (%)* 75 (24.2%) 171 (17.8%) 0.014
Length of pregnancy in weeks, mean (SD) 38.3 (3.2) 39.0 (3.0) 0.0006
Intrauterine growth restriction 17 (5.0%) 41 (14.0%) 0.43
Maternal anaemia at delivery, n (%)* 90 (26.4%) 136 (15.3%) < 0.0001
Haematocrit in  %, mean (SD) 31.3 (6.2) 34.9 (5.9) < 0.0001
Low birth weight babies, n (%)* 70 (21.6%) 139 (14.0%) 0.0011
Baby weight in grams, mean (SD) 2922 (656) 3134 (635) < 0.0001
  1. For variables with missing values indicated by * sign, percentages are calculated by non-missing data