Judith Godin|Janice Keefe|Melissa K. Andrew
Handling missing Mini-Mental State Examination (MMSE) values: Results from a cross-sectional long-term-care study
Mount Saint Vincent University|Nova Scotia Health Authority|Dalhousie University|Mount Saint Vincent University|Nova Scotia Health Authority|Dalhousie University
missing values commonly encountered mini mental state examination mmse particularly administered frail older people presents challenges mmse scoring research settings sought describe missingness mmses administered longtermcare facilities ltcf compare contrast approaches dealing missing items part care construction project nova scotia canada ltcf residents completed mmse different methods dealing missing values eg use raw scores raw scoresnumber items attempted scalelevel multiple imputation mi blended approaches compared itemlevel mi mmse administered 320 residents living 23 ltcf sample predominately female 73 38 participants aged 85 years least one item missing 122 382 mmses data missing completely random mcar 2 1110 1351 p 0001 using raw scores missing 6 items combination scalelevel mi resulted regression coefficients standard errors closest itemlevel mi patterns missing items often suggest systematic problems trouble manual dexterity literacy visual impairment observations may relatively easy take account clinical settings nonrandom missingness presents challenges research must considered statistical analyses present suggestions dealing missing mmse data based extent missingness goal analyses