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Table 3 Timing of submicroscopic infection during pregnancy and odds of placental malaria among women without microscopically detected infection

From: Submicroscopic malaria infection during pregnancy and the impact of intermittent preventive treatment

Timing of submicroscopic infection detection

Any placental malaria

No placental malaria

Odds ratio (95% CI)

No submicroscopic infection

39/61 (64%)

184/197 (93%)

Referent

Submicroscopic infection at enrolment visit*

19/60 (32%)

9/194 (5%)

6.9 (2.7-17)

Submicroscopic infection at a follow-up visit in the 2nd trimester

6/61 (10%)

3/197 (2%)

1.9 (0.3-12)

Submicroscopic infection at a follow-up visit in the 3rd trimester

7/61 (11%)

2/197 (1%)

3.5 (0.5-23)

  1. *Four women did not have molecular data available from their enrolment visit.
  2. CI: confidence interval.