Laboratory Medicine and Quality Assurance

Table. 1. 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.