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Table 2 Prevalence of Plasmodium spp. infections of study participants

From: The epidemiology of Plasmodium falciparum and Plasmodium vivax in East Sepik Province, Papua New Guinea, pre- and post-implementation of national malaria control efforts

  2005 (n = 2527) 2013 (n = 2486) p-value
Parasite detection by light microscopy
 All species 1121/2527 44.4% 206/2486 8.3% < 0.001
 P. falciparum 756/2527 29.9% 139/2486 5.6% < 0.001
  Asexual parasites 730/2527 28.9% 128/2486 5.2% < 0.001
  Gametocytes 80/2527 3.2% 33/2486 1.3% < 0.001
  Geometric mean density (SD) 464.2 (6.8) 487.3 (9.3) 0.798
 P. vivax 368/2527 14.6% 69/2486 2.8% < 0.001
  Asexual parasites    69/2486 2.8%  
  Gametocytes    19/2486 0.8%  
  Geometric mean density (SD) 193.2 (4.2) 218.5 (5.6) 0.531
 P. malariae 99/2527 9.0% 6/2486 0.2% < 0.001
 P. ovale 0/2527 0.0% 2/2486 0.1% 0.246
 Mixed any species 100/2527 6.5% 9/2486 0.4% < 0.001
Parasite detection by molecular method
 All species 1844/2527 73.0% 303/2486 12.2% < 0.001
 P. falciparum 1387/2527 54.9% 212/2486 8.5% < 0.001
  Gametocytes NA   94/2486 3.8%  
 P. vivax 901/2527 35.7% 139/2486 5.6% < 0.001
  Gametocytes NA    23/2486 0.9%  
 P. malariae 338/2527 13.4% 28/2486 1.1% < 0.001
 P. ovale 121/2527 4.8% 29/2486 1.2% < 0.001
 Mixed any species 723/2527 28.6% 93/2486 3.7% < 0.001
  Mixed with P. falciparum 683/2527 27.0% 86/2486 3.5%  
  Mixed non-P. falciparum 40/2527 1.6% 7/2486 0.3%  
 Symptomatic infections of any species 132/2527 5.2% 80/2486 3.2% < 0.001
  1. Italics p-values are considered statistically significant (p < 0.05)