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Table 2 Prevalence of Plasmodium falciparum in 832 delivering women according to parity

From: Detection and clinical manifestation of placental malaria in southern Ghana

Parameter Prevalence of Plasmodium falciparum (%) P
  Primiparae Parae II & III Multiparae  
No. 304 305 223  
Peripheral blood     
Diagnosic mean     
   Microscopy 27.0 16.4* 11.7* < 0.0001
   HRP2 test 45.4 30.5* 23.8* < 0.0001
   PCR 59.2 52.1 46.2* 0.01
GMPD (μL, 95%CI) 740 (481–1137) 343 (189–623)* 593 (263–1336) 0.12
Placental blood     
Diagnostic mean     
   Microscopy 46.1 33.1* 22.0* < 0.0001
   Haemozoin 42.4 29.8* 16.6* < 0.0001
   HRP2 test 50.7 37.4* 32.3* < 0.0001
   PCR 65.1 59.7 52.0* 0.01
GMPD (/HPF; 95%CI) 1.2 (0.8–1.8) 0.6 (0.4–1.1) 0.4 (0.2–0.7)* 0.01
Stage of infection     
   None 47.4 57.7* 70.9*  
   Resolved 6.6 9.2 7.2  
   Late 35.9 20.7* 9.4*  
   Early 10.2 12.5 12.6 < 0.0001
  1. HRP2, histidine-rich-protein 2; GMPD, geometric mean parasite density; 95%CI, 95% confidence interval; HPF, high power field; *, difference to primiparae, P < 0.05