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Table 3 Parasitaemia (%) according to species and performance of the antigen-immunochromatographic test (n = 124)

From: Epidemiological and clinical assessment of a shared territorial malaria guideline in the 10 years of its implementation (Barcelona, North Metropolitan Area, Catalonia, Spain, 2007–2016)

Parasitaemia <1% 1-4% >4% Total
P. falciparum a
 Antigenic rapid test+ (%) 35 (81.4) 40 (95.2) 6 (100) 81 (89.2)
 Antigenic rapid test− (%) 8 (19.6) 2 (4.8) 0 (0) 10 (10.8)
P. vivax
 Antigenic rapid test + (%) 13 (76.5) 14 (93.3) 1 (100) 28 (84.8)
 Antigenic rapid test− (%) 4 (24.4) 1 (6.7) 0 (0) 5 (15.2)
Total
 Antigenic rapid test+ (%) 48 (80) 54 (94.7) 7 (100) 109 (87.9)
 Antigenic rapid test− (%) 12 (20)b 3 (6.3) 0 (0) 15 (12.1)
  1. aCo-infections: P. falciparum + P. ovale = 3 cases 1–4%, 1 case > 4%; P. falciparum + P. malariae = 1 case 1–4%
  2. bp = 0.01 when comparing number of <1% false negatives (20.2%) vs ≥1% (6.7%)