Table 1 Comparison of women’s general characteristics between the three studies
From: Malaria and gravidity interact to modify maternal haemoglobin concentrations during pregnancy
Factors | Ouidah study n = 1601 | STOPPAM n = 985 | APEC n = 1005 | P value |
|---|---|---|---|---|
Area | Semi-rural | Rural | Semi-rural | |
Education of the woman (%) | ||||
None | 44.5 | 56.3 | 66.6 | < 0.001 |
Some | 55.5 | 43.7 | 33.4 | |
Age (%) | ||||
< 21 | 24.7 | 22.3 | 25.6 | 0.22 |
≥ 21 | 75.3 | 77.7 | 74.4 | |
Gravidity (%) | ||||
Primigravidae | 26.9 | 18.7 | 18.9 | < 0.001 |
Multigravidae | 73.1 | 81.3 | 81.1 | |
BMI at inclusion (kg /m2) ( % ) | ||||
<20 | 81.0 | 78.1 | 77.7 | 0.07 |
≥20 | 19.0 | 21.9 | 22.3 | |
Interval between ANV1 and ANV2 (weeks) mean (SD) | 8.6 (3.2) | 5.1 (1.5) | 6.4 (1.8) | 0.0001 |
Interval between ANV2 and delivery (weeks) mean (SD) | 8.6 (3.3) | 13.9 (3.9) | 12.2 (5.4) | 0.0001 |
Gestational age at ANV1 (weeks) mean (SD) | 24.2 (2.8) | 20.6 (3.1) | 22.1 (4.1) | 0.0001 |
Gestational age at delivery (weeks) mean (SD) | 39.6 (1.9) | 39.4 (2.7) | 39.3 (3.2) | 0.15 |
Placental malaria (%) | ||||
Positive | 3.0 | 11.4 | 9.2 | < 0.001 |
Negative | 97.0 | 88.6 | 90.8 | |
Severe anaemia at ANV1 (%) | ||||
Yes | 1.4 | 0.5 | 0.7 | 0.05 |
No | 98.6 | 99.5 | 99.3 | |
Severe anaemia at delivery (%) | ||||
Yes | 1.0 | 1.4 | 0.7 | 0.4 |
No | 99.0 | 98.6 | 99.3 | |
Haemoglobin at ANV1 (g / L) mean (SD) | 104.1 (14.0) | 102.0 (11.5) | 103.2 (12.37) | 0.0004 |
Haemoglobin at ANV2 (g / L) mean (SD) | 105.2 (13.4) | 102.1 (10.5) | 105.1(10.8) | 0.0001 |
Haemoglobin at delivery (g / L) mean (SD) | 113.7 (16.3) | 110.0 (14.0) | 111.5 (14.4) | 0.0001 |
Number of antenatal visits mean (SD) | 3.1 (0.7) | 3.7 (1.3) | 3.5 (1.0) | 0.0001 |