Table 5. S. stercoralis larvae in direct smear examination, formalin-gasoline sedimentation technique, agar plate culture and modified Baermann technique of two stool samples*.
| DSE | FGST | APC | MBT | Combined 4 methods | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | % | n | % | |
| Cumulative result after examination of | ||||||||||
| 1 stool sample | 20 | 2.5 | 17 | 2.1 | 48 | 6.0 | 46 | 5.7 | 53 | 6.6 |
| 2 stool samples | 29 | 3.6 | 31 | 3.9 | 61 | 7.6 | 64 | 8.0 | 72 | 9.0 |
| Sensitivity** (2 samples) |
29/72 | 40.3 | 31/72 | 43.1 | 61/72 | 84.7 | 64/72 | 88.9 | ||
| Sensitivity** of an individual test | 37/144 | 25.7 | 39/144 | 27.1 | 97/144 | 67.4 | 100/144 | 69.4 | ||
*stool results processed in CENETROP laboratory were not included (see methods section)
**sensitivity among people with S. stercoralis larvae detected with at least one coproparasitological technique (the global sensitivity of each test is not computable due to the lack of gold standard for the diagnosis of S. stercoralis)
DSE = direct smear examination, FGST = formalin-gasoline sedimentation technique, APC = agar plate culture, MBT = modified Baermann technique