Role of Youden plot in external quality assessment of sperm concentration

doi:10.3969/j.issn.1673-8640.2023.02.013

Abstract

Abstract:

Objective According to Youden plot in external quality assessment（EQA） of sperm concentration，to bring more efficient information from EQA report data，to discover systematical errors，and to improve determination quality. Methods The sperm concentration EQA data of Shandong province in 2019 and 2020 were collected，a Youden plot had been drawn，and the EQA report results of 2019 and 2020 were analyzed. Results The coefficient of variation（CV） of quality control meterial at low concentration levels in 2020（31%） was decreased compared with that in 2019（19%）（P<0.05），and the CV of quality control meterial at high concentration levels had no statistical significance（P=0.097）. Conclusions Youden plot can reflect the tendency of laboratory systematical errors for sperm concentration，so the participating laboratories can find the systematical errors directly.

Key words: Sperm concentration, Semen analysis, External quality assessment, Systematical error, Youden plot

CLC Number:

R446.1

ZHANG Weimin, LI Ting, ZHANG Chen, XIE Nan, ZHAO Fei, WU Xia, MENG Qinghao, LI Min, GAO Xuan, YANG Sijie. Role of Youden plot in external quality assessment of sperm concentration[J]. Laboratory Medicine, 2023, 38(2): 167-171.

Figures/Tables 7

References 10

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年份	高浓度水平		低浓度水平
年份	检测值/（×10⁶/mL）	CV/%	检测值/（×10⁶/mL）	CV/%
2019年	64±19	30	35±11	31
2020年	66±14	21	32±6	19
χ²值		2.312		3.840
P值		0.097		0.036

年份	高浓度水平		低浓度水平
年份	检测值/（×10⁶/mL）	CV/%	检测值/（×10⁶/mL）	CV/%
2019年	64±19	30	35±11	31
2020年	66±14	21	32±6	19
χ²值		2.312		3.840
P值		0.097		0.036

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