attrition bias

Noun

 * 1) A type of selection bias in statistical analysis, caused by loss of participants (attrition) in the course of a study; the subjects that do not run into completion of the study may differ systematically of those who do.

Translations

 * Finnish: hiertymisharha
 * French: biais d'attrition
 * German: suggestion: *Teilnehmerverlustverzerrung