Simple imputation methods were inadequate for missing not at random (MNAR) quality of life data
Citation
Fielding , S , Fayers , P M , McDonald , A , McPherson , G , Campbell , M K & RECORD Study Group 2008 , ' Simple imputation methods were inadequate for missing not at random (MNAR) quality of life data ' , Health and Quality of Life Outcomes , vol. 6 , 57 . https://doi.org/10.1186/1477-7525-6-57