RT Journal Article SR Electronic T1 Does analysis using “last observation carried forward” introduce bias in dementia research? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 751 OP 753 DO 10.1503/cmaj.080820 VO 179 IS 8 A1 Molnar, Frank J. A1 Hutton, Brian A1 Fergusson, Dean YR 2008 UL http://www.cmaj.ca/content/179/8/751.abstract