Table 1 Absolute (n) and relative (%) frequencies of categories in variables under study
Variables studied | Categories | n (%) |
|---|---|---|
Outcomes | ||
Low Apgar at 5-min | Score < 7 | 75 (2.7) |
Score ≥ 7 | 2732 (97.3) | |
Stillbirth | Yes | 23 (0.8) |
No | 2784 (99.2) | |
Maternal pregnancy and health characteristics | ||
Advanced age or young | > 35 years or < 15 years | 298 (10.6) |
15–35 years | 2509 (89.4) | |
Number of previous deliveries | 1–4 deliveries | 1443 (51.4) |
Otherwise | 1364 (48.6) | |
Attended ≥ 6 obstetrics consults during pregnancy | ≥ 6 consults | 2036 (72.8) |
Otherwise | 760 (27.2) | |
Missing data | 11 | |
Diagnosed with perinatal anaemia | Hgb < 11 g/dL | 1144 (41.2) |
Otherwise | 1635 (58.8) | |
Missing data | 28 | |
Presented with perinatal fever | Yes | 142 (5.1) |
No | 2655 (94.9) | |
Missing data | 10 | |
Diagnosed with malaria prior to current pregnancy | Yes | 1265 (45.1) |
No | 1539 (54.9) | |
Missing data | 3 | |
Diagnosed with malaria during pregnancy | P. vivax only | 108 (3.85) |
P. falciparum or mixed (falc + viv) | 94 (3.35) | |
No malaria | 2605 (92.8) | |
Diagnosed with perinatal malaria | Yes | 27 (1) |
No malaria | 2605 (99) | |
Missing data | 175 | |
No malaria testing during pregnancy | Testing not done | 564 (20.1) |
Testing done | 2243 (79.9) | |
Maternal malaria risk factors | ||
Resides in Cruzeiro do Sul | Cruzeiro do Sul | 1578 (56.2) |
Otherwise | 1229 (43.8) | |
Resides in rural area | Rural | 1522 (54.5) |
Urban | 1270 (45. 5) | |
Missing data | 15 | |
Illiterate or has secondary education as highest level | Illiterate or secondary | 1072 (38.2) |
High school or college | 1734 (61.8) | |
Missing data | 1 | |
Never used repellent in pregnancy | Not used | 684 (24.4) |
Used in any trimester | 2123 (75.6) | |
Never used a bed net during pregnancy | Not used | 1078 (38.4) |
Used in any trimester | 1779 (61.6) | |
No air conditioning unit in home | No air conditioning | 2333 (83.1) |
With air conditioning | 474 (16.9) | |
Newborn health at delivery | ||
Born prematurely (in gestational age) | < 37 weeks | 203 (7.3) |
≥ 37 weeks | 2570 (92.7) | |
Low birth weight at delivery (g) | < 2500 g | 212 (7.5) |
≥ 2500 g | 2595 (92.5) | |
Low head circumference (cm) | < 33 cm | 342 (12.2) |
≥ 33 cm | 2456 (87.8) | |
Control variable | ||
Haemoglobin blood test timing | Before delivery | 1795 (64.8) |
After delivery | 977 (35.2) | |
Missing data | 35 | |