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Table 2 Parasitological indices of delivering women at Agogo Hospital, southern Ghana, in 2000 and 2006

From: Decline of placental malaria in southern Ghana after the implementation of intermittent preventive treatment in pregnancy

Parameter Year of delivery 2006 vs. 2000, P 2006 vs. 2000 subset, P
2000 2000, matching dates subset 2006
No. 839 197 226   
Placental infection (%)      
   Microscopy 34.9 29.9 15.0 <0.0001 0.0002
   Pigment 30.9 31.0 17.7 <0.0001 0.001
   HRP2 40.8 38.6 22.1 <0.0001 0.0002
   PCR 59.4 51.3 31.9 <0.0001 <0.0001
Stage of placental infection      
   Resolved 17.9 (64/357) 28.1 (23/82) 27.7 (13/47)   
   Late 54.6 (195/357) 46.3 (38/82) 57.4 (27/47)   
   Early 27.5 (98/357) 25.6 (21/82) 14.9 (7/47) 0.10 0.31
Placental parasite density (GMPD, 95%CI) 0.78 (0.57–1.03) 0.61 (0.32–1.15) 0.31 (0.12–0.80) 0.06 0.23
Peripheral blood film positive (%) 19.0 11.2 14.6 0.13 0.29
Peripheral parasite density (GMPD, 95%CI) 558 (404–772) 506 (224–1142) 891 (366–2172) 0.24 0.39
  1. HRP2, histidine rich protein 2, GMPD, geometric mean parasite density; 95%CI, 95% confidence interval