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Table 4 Association of Plasmodium falciparum infection at antenatal enrolment and at delivery and anaemia (haemoglobin < 110 g/L) at delivery

From: Microscopic and submicroscopic Plasmodium falciparum infection, maternal anaemia and adverse pregnancy outcomes in Papua New Guinea: a cohort study

Infection status % (N/N total) Adjusted odds ratioa 95% confidence interval P
P. falciparum infection at enrolment (n = 1832)
 No infection 73.9 (1218/1649)    
 Submicroscopic infection 69.2 (63/91) 0.78 (0.49, 1.24) 0.29
 Microscopic infection 85.9 (79/92) 2.00 (1.09, 3.67) 0.025
P. falciparum infection at delivery (peripheral blood) (n = 1756)
 No infection 74.2 (1261/1700)    
 Submicroscopic infection 79.2 (19/24) 1.15 (0.42, 3.16) 0.79
 Microscopic infection 78.1 (25/32) 1.15 (0.49, 2.72) 0.75
P. falciparum infection at delivery (placental blood) (n = 1174)
 No infection 71.7 (815/1137)    
 Submicroscopic infection 71.4 (10/14) 0.87 (0.27, 2.81) 0.81
 Microscopic infection 78.3 (18/23) 1.28 (0.47, 3.53) 0.63
  1. a Adjusted for treatment arm, gravidity, betel nut consumption, number of study visits, enrolment clinic, bed net use, nutritional status, stunting, socio-economic status and timing of haemoglobin measurement