Table 1. General characteristics of pregnant women during study in district of Allada, Benin, 2010–2012.
| Characteristics | ANC 1* | ANC 2* | Delivery | ||||
|---|---|---|---|---|---|---|---|
| No. | Mean or % | No. | Mean or % | No. | Mean or % | ||
| Duration between differents visits (days) | 400 | - | 44.1 (±11.1) | 79.7 (±12.7) | |||
| Age (years) | Mean | 400 | 25.9 (±5.4) | - | - | - | - |
| Gravidity (%) | Multigravidae | 337 | 84.3 | - | - | - | - |
| IPTp group (%) | SP | 138 | 35.5 | - | - | - | - |
| MQ | 262 | 65.5 | - | - | - | - | |
| Estimated pre-pregnancy BMI (%) | BMI < 16.0 | 17 | 4.3 | - | - | - | - |
| 16.0 ≤ BMI < 17.0 | 26 | 6.5 | - | - | - | - | |
| 17.0 ≤ BMI < 18.5 | 32 | 8.0 | - | - | - | - | |
| 18.5 ≤ BMI < 25.0 | 285 | 71.2 | - | - | - | - | |
| 25.0 ≤ BMI < 30.0 | 36 | 9.0 | - | - | - | - | |
| BMI ≥ 30.0 | 4 | 1.0 | - | - | - | - | |
| Gestational age (weeks) | Mean | 400 | 22.7 (±3.9) | 392 | 29.2 (±3.7) | 397 | 39.8 (±1.8) |
| Preterm birth (%) | - | - | - | - | 397 | 5.8% | |
| Gestational anaemia (%) | Yes | 400 | 72.5 | 392 | 67.1 | 400 | 50.0 |
| Iron deficiency (%) | Yes | 400 | 36.5 | 392 | 40.1 | 397 | 31.5 |
| Folic acid deficiency (%) | Yes | 400 | 33.7 | 392 | 17.1 | 397 | 43.5 |
| Vitamin B12 deficiency (%) | Yes | 400 | 5.3 | 392 | 3.6 | 397 | 9.3 |
| Helminth infection (%) | Yes | 395 | 9.1 | 387 | 8.8 | 355 | 5.1 |
| Peripheral malaria infection (%) | Yes | 400 | 16.0 | 392 | 4.1 | 400 | 10.8 |
| Placental malaria infection † (%) | None | - | - | - | - | 307 | 77.9 |
| Past | - | - | - | - | 45 | 11.4 | |
| Chronic | - | - | - | - | 33 | 8.4 | |
| Active | - | - | - | - | 9 | 2.3 |
BMI: Body mass index; Preterm birth: gestational age at delivery < 37 weeeks;
IPTp: Intermittent Preventive Treatment in pregnancy against malaria, SP: Sulfadoxine-Pyrimethamine, MQ: Mefloquine
* First and second dose of IPTp administrations; Standard deviation are in parentheses
† Malaria infection detected in placenta by histology.