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Table 1 Malaria prevalence and bed net use before, during and after a universal bed net campaign

From: The prevalence of malaria at first antenatal visit in Blantyre, Malawi declined following a universal bed net campaign

Time period Bed net use OR (95 % CI) Malaria infection prevalence OR (95 % CI) Clinical malaria prevalence OR (95 % CI)
Before bed net campaign 225/447 (50.3 %) Referent 125/440 (28.4 %) Referent 39/449 (8.7 %) Referent
During bed net campaign 200/365 (54.8 %) 1.2 (0.9–1.6) 87/471 (18.5 %) 0.6 (0.4–0.8) 11/364 (3.0 %) 0.3 (0.2–0.6)
After bed net campaign 354/535 (66.2 %) 1.9 (1.5–2.5) 108/718 (15.0 %) 0.4 (0.3–0.6) 16/534 (3.0 %) 0.3 (0.2–0.6)
Total 779/1347 (57.8 %)   320/1629 (19.6 %)   66/1347 (4.9 %)