Table 3 Agreement in faecal egg counts (FECs) between initial reading and second quality control reading of Kato-Katz thick smears according to two different guidelines
WHO guideline a | Swiss TPH guideline a | |||
|---|---|---|---|---|
Trichuris trichiura | Ascaris lumbricoides | Trichuris trichiura | Ascaris lumbricoides | |
Total number of Kato-Katz thick smears (positive/negative) | 1,445 (1,189/256) | 1,445 (297/1,148) | 1,445 (1,189/256) | 1,445 (297/1,148) |
1. No. of Kato-Katz thick smears with difference in FECs (%) | 345 (23.9%) | 148 (10.2%) | 97 (6.7%) | 108 (7.5%) |
2. No. of Kato-Katz thick smears with differences in presence/absence of helminth eggs (%) | 51 (3.5%) | 32 (2.2%) | 51 (3.5%) | 32 (2.2%) |
3. No. of Kato-Katz thick smears with difference in FECs (%) among samples with egg counts | 345 (29.0%) | 148 (49.8%) | 97 (8.2%) | 108 (36.4%) |
4. No. of Kato-Katz thick smears with differences in presence/absence of helminth eggs (%) among samples with egg counts | 51 (4.3%) | 32 (10.8%) | 51 (4.3%) | 32 (10.8%) |
1. and/or 2. (%) | 381 (26.4%) | 164 (11.4%) | 145 (10.0%) | 130 (9.0%) |
No. of Kato-Katz thick smears with discrepancies according to respective guidelineb (%) | 345 (23.9%) | 164 (11.4%) | 145 (10.0%) | 130 (9.0%) |
3. and/or 4. and proportion as percentage (%) among Kato-Katz thick smears with positive egg counts | 381 (32.0%) | 164 (55.2%) | 145 (12.2%) | 130 (43.8%) |
No. of Kato-Katz thick smears with discrepancies according to respective guidelineb (%) among Kato-Katz thick smears with positive egg counts | 345 (29.0%) | 148 (49.8%) | 145 (12.2%) | 130 (43.8%) |