Why is it necessary to test, retest, and test again? This originally statistics-related concept is called t est-retest reliability, and it refers to the way repeated testing ensures a more ...

Conclusion Test–retest reliability of the EQ-5D-5L administered via a web-based questionnaire was substantial to almost perfect for the EQ-5D-5L dimensions, good for EQ-5D-5L summary index, and ...