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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