Volume 19, Number 10—October 2013
Research
Plasmodium vivax Malaria during Pregnancy, Bolivia
Table 3
Characteristic | Multiple linear regression, n = 1,417 |
Mutlivariate logistic regression, n = 1,417 |
||
---|---|---|---|---|
Adjusted difference in mean birthweight, g (95% CI)† | p value | Adjusted OR for low birthweight (95% CI) | p value | |
Baby | ||||
Mature | 0 | NS | 1 | NS |
Premature | –752 (−849 to −656) | <0.001 | 37.8 (20.9–68.3) | <0.001 |
Boy | 0 | NS | 1 | NS |
Girl | –151 (−198 to −105) | <0.001 | 1.7 (0.98–3.1) | 0.06 |
Mother | ||||
Multiparous | 0 | NS | 1 | NS |
Secondiparous | –79 (−146 to −13) | 0.02 | 1.6 (0.91–2.9)‡ | 0.10 |
Primiparous | –168 (−232 to −103) | <0.001 | NS | NS |
<25 y of age | 0 | NS | NS | 0.56 |
25–35 y of age | 102 (38–167) | 0.002 | NS | NS |
>35 y of age | 181 (83–279) | <0.001 | NS | NS |
Antenatal visit | 0 | NS | NS | 0.22 |
No antenatal visit | –112 (−235 to 10) | 0.07 | NS | NS |
Bermejo | 0 | NS | NS | 0.47 |
Guayaramerín | –52 (−102 to −2) | 0.04 | NS | NS |
Noninfected placenta | 0 | NS | 1 | NS |
P. vivax–infected placenta | –181 (−321 to −41) | 0.01 | 6.2 (2.2–17.6) | <0.001 |
*OR, odds ratio; NS, not significant. Significant values (<0.05) are indicated in boldface. Multivariate models adjusting for mother’s age, number of previous pregnancies, antenatal visits, houses with indoor insecticide spraying, site of study, delivery during transmission season, mother’s anemia, and sex and gestational age of the baby. Only significant variables (p<0.10) from linear regression model are shown. The same variables were used for the logistic regression model.
†Baseline mean birthweight was 3,537 g.
‡First and second pregnancies combined compared with multiparous women.
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