Table 1. Composition of EQA and percentage of answers received (N = 1849) for each photograph.
| Line | % of answers (N = 1849) | |||||||||
| Photo number | Correct answer | Control | Pan | P.f. | 1. Invalid | 2. Negative | 3. Positive, P. falciparum | 4. Positive, P. falciparum, mixed infection possible | 5. Positive, P. non-falciparum | 6. Positive, but species not known |
| A | Positive, P. falciparum, mixed infection possible | + | W | S | 1.8** | 0.8** | 32.8* | 58.1 | 1.9** | 4.6* |
| B | Positive, P. falciparum | + | − | F | 3.2** | 31.2** | 58.4 | 1.9* | 2.3** | 3.0* |
| C | Invalid | − | − | − | 86.7 | 9.0** | 1.6** | 1.2** | 0.5** | 0.9** |
| D | Positive, P. falciparum | + | − | W | 2.9** | 4.1** | 81.2 | 4.0* | 4.5** | 3.2* |
| E | Negative | + | − | − | 2.8** | 90.2 | 2.2** | 1.6** | 1.7** | 1.5** |
| F | Positive, P. non-falciparum | + | W | − | 5.2** | 13.1** | 6.5* | 4.9* | 53.7 | 16.5* |
| G | Positive, P. falciparum | + | − | M | 2.9** | 2.1** | 82.9 | 5.6* | 3.0** | 3.6* |
| H | Invalid | BG | BG | BG | 67.5 | 4.4** | 2.3** | 6.7** | 7.7** | 11.4** |
| I | Positive, P. falciparum, mixed infection possible | + | S | S | 2.6** | 2.3** | 10.3* | 77.7 | 1.9** | 5.2* |
| J | Negative | + | − | − | 5.4** | 87.2 | 2.8** | 1.4** | 1.4** | 1.8** |
− : negative,+positive, F: Faint positive, W: Weak positive, M: medium positive, S: Strong positive, BG: strong background, lines invisible.
*
minor error,
**
Major error.