Table 5 Sensitivity of the SDFK40 according to parasite density, prospective samples
Results of microscopy corrected by PCR | Number | Correctly identified by SDFK40 | % Sensitivity (95% C.I.) |
|---|---|---|---|
All P. falciparum samples | 137 | 108 | 78.8 (75.3-81.1) |
   Pure gametocytaemia | 7 | 3 | 42.9 (9.9-81.6) |
   Asexual parasite density 0-100/μl | 11 | 1 | 9.1 (2.3-41.3) |
   Asexual parasite density 101-1,000/μl | 26 | 16 | 61.5 (40.6-79.8) |
   Asexual parasite density >1,000/μl | 93 | 88 | 94.6 (87.9-98.2) |
   Asexual parasite density >100/μl | 119 | 104 | 87.4 (80.1-92.8) |
All non-falciparum species combined | 28 | 23 | 82.1 (72.9-82.1) |
   Parasite density ≤ 500/μl | 6 | 2 | 33.3 (4.3-77.7) |
   Parasite density > 500/μl | 22 | 21 | 95.5 (77.2-99.9) |