Browsing NTNU Open by Author "Fielding, S"
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Investigating the missing data mechanism in quality of life outcomes: a comparison of approaches
Fielding, S; Fayers, Peter; Ramsay, CR (Journal article; Peer reviewed, 2009)Background: Missing data is classified as missing completely at random (MCAR), missing at random (MAR) or missing not at random (MNAR). Knowing the mechanism is useful in identifying the most appropriate analysis. The ... -
Simple imputation methods were inadequate for missing not at random (MNAR) quality of life data
Fielding, S; Fayers, Peter; McDonald, A; McPherson, G; Campbell, MK (Journal article; Peer reviewed, 2008)Objective: QoL data were routinely collected in a randomised controlled trial (RCT), which employed a reminder system, retrieving about 50% of data originally missing. The objective was to use this unique feature to ...