Table 3.
Results of blinded examination of malaria blood slides in Anhui Province, 2012–2022
| Year | The number of hospitals |
Qualitative accuracy a(%) |
Accuracy of species identificationb(%) |
|---|---|---|---|
| 2018 | 110 | 89.45(492/550) | 57.11(217/380) |
| 2019 | 129 | 93.33(602/645) | 63.22(275/435) |
| 2020 | 129c | 92.86(585/630) | 62.82(267/425) |
| 2021 | 129c | 95.56(602/630) | 63.68(270/424) |
| 2022 | 129 | 95.66(617/645) | 70.11(305/435) |
| χ2 | 2161.697 | 117.081 | |
| P-value | < 0.001 | < 0.001 | |
| Trend χ2 | 182.588 | 0.006 | |
| P-value | < 0.001 | 0.938 |
aThe proportion of blood slides that can be accurately determined whether protozoa were present
bFor positive slides, the proportion of blood slides that can be correctly identified species
cThree hospitals in 2020 and three in 2021 did not report their assessment results