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Table 1 Characteristics of study participants and their mothers

From: Impact of intermittent preventive treatment of malaria in pregnancy with dihydroartemisinin-piperaquine versus sulfadoxine-pyrimethamine on the incidence of malaria in infancy: a randomized controlled trial

Characteristic

Maternal IPTp arm

p value

Monthly SP (N = 339)

Monthly DP (N = 339)

Maternal characteristics at enrollment

 Age in years, mean (SD)

23.9 (5.9)

23.9 (5.7)

0.98

 Gravidity, n (%)

  Primigravida

86 (25.4%)

73 (21.5)

0.21

  Secundigravida

72 (21.2%)

90 (26.6)

  Multigravida

181 (53.4%)

176 (51.8)

 Gestation age categories, n (%)

  12–16 weeks

195 (57.5%)

204 (60.2%)

0.48

  > 16–20 weeks

144 (42.5%)

135 (39.8%)

 Parasite prevalence by microscopy, n (%)

170 (50.2%)

183 (54.0%)

0.32

Maternal characteristics during pregnancy

 Parasite prevalence by microscopya, n/N (%)

828/2291 (36.1%)

365/2324 (15.7%)

< 0.001

 Incidence of malaria (episodes/PPY)

0.59

0.09

< 0.001

Measures of placental malaria

 Placental blood positive by microscopyb, n/N (%)

29/326 (8.9%)

1/331 (0.3%)

< 0.001

 Placental blood positive by LAMPc, n/N (%)

71/320 (22.2%)

7/329 (2.1%)

< 0.001

 Positive placental histologyd, n/N (%)

199/327 (60.9%)

93/329 (28.3%)

< 0.001

Characteristics of infants at birth

 Preterm birth, n (%)

27 (8.0%)

17 (5.0%)

0.12

 Gestation age in weeks, mean (SD)

39.4 (1.9)

39.6 (1.6)

0.08

 Low birth weight, n (%)

34 (10.0%)

26 (7.7%)

0.28

 Birth weight in grams, mean (SD)

3052 (505)

3023 (408)

0.41

 Female sex, n (%)

166 (49.0%)

180 (53.1%)

0.28

  1. DP dihydroartemisinin-piperaquine, IPTp intermittent preventive treatment of malaria in pregnancy, LAMP loop-mediated isothermal amplification, PPY per person-year, SD standard deviation, SP sulfadoxine-pyrimethamine
  2. aDefined as the number of positive blood smears during routine visits divided by the total number of routine blood smears
  3. bDefined as the detection of parasites in the placental blood by microscopy
  4. cDefined as the detection of parasites in the placental blood by LAMP
  5. dDefined as the detection of parasites or pigment in the placental tissue