Laboratory Medicine and Quality Assurance

Table. 1.

Performance of laboratories in microscopic examination of stool in clinical parasitology (2020)

Trial no. Specimen no. No. of participants Organisms identified with acceptable accuracy No. (%) Organisms identified with unacceptable accuracy No. (%)
Trial I MPI-20-01 216 Enterobius vermicularis 215 (99.5) No answer 1 (0.5)
MPS-20-01 216 Clonorchis sp. 208 (96.3) Metagonimus yokogawai 4 (1.9)
No parasite seen 2 (0.9)
Paragonimus sp. 2 (0.9)
MPS-20-02 216 No parasite seen 213 (98.6) Blastocystis hominis 2 (0.9)
Trichuris trichiura 1 (0.5)
Trial II MPI-20-02 215 Paragonimus sp. 211 (98.1) Clonorchis sp. 4 (1.9)
MPI-20-03 215 Ascaris sp. 215 (100.0)
MPS-20-03 215 No parasite seen 199 (92.5) Cryptosporidium sp. 1 (0.5)
Endolimax nana 1 (0.5)
Hymenolepis nana 1 (0.5)
Ascaris sp. 1 (0.5)
Clonorchis sp. 1 (0.5)
Hookworm 2 (0.9)
Schistosoma japonicum 1 (0.5)
No answer 8 (3.6)
Trial III MPI-20-04 214 Sarcoptes scabiei 211 (98.6) Sarcocystis sp. Oocysts 2 (0.9)
Hookworm 1 (0.5)
MPS-20-04 214 Trichuris trichiura 210 (98.0) Clonorchis sp. 1 (0.5)
Metagonimus yokogawai 1 (0.5)
No parasite seen 1 (0.5)
Taenia sp. 1 (0.5)
MPS-20-05 214 No parasite seen 208 (97.2) Ascaris sp. 1 (0.5)
Clonorchis sp. 2 (0.9)
No answer 3 (1.4)
Subtotal MPI 860 852 (99.1)* 8 (0.9)
MPS 1,075 1,038 (96.6)* 37 (3.4)
Total 1,935 1,890 (97.7) 45 (2.3)

*Statistically significance was found between the agreement rates of MPS vs. MPI samples, P=0.0002.

Lab Med Qual Assur 2022;44:185~190 https://doi.org/10.15263/jlmqa.2022.44.4.185
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