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. Author manuscript; available in PMC: 2016 Nov 29.
Published in final edited form as: J Am Med Dir Assoc. 2015 Feb 27;16(6):509–514. doi: 10.1016/j.jamda.2015.01.088
Variable
N = 699
N (%) Cases With Missing Values Role
Age 0 (0) Predictor
Gender 0 (0) Predictor
Education 0 (0) Predictor
Smoking status 0 (0) Predictor
Alcohol use 0 (0) Predictor
MMSE score 0 (0) Predictor
Somatic diseases 0 (0) Predictor
Weight loss 5 (0.7) Predictor and imputed
Grip strength 35 (5.0) predictor and imputed
Walking speed 48 (6.9) predictor and imputed
Exhaustion 0 (0) Predictor
Low activity level 0 (0) Predictor
CES-D follow-up 1 53 (7.6) Predictor
CES-D follow-up 2 130 (18.6) Predictor
CES-D follow-up 3 250 (35.8) Predictor
CES-D baseline 0 (0) Predictor

When patterns of missing data were analyzed, it showed that data was missing by a random pattern and therefore the Fully Conditional Specification Method was used. We used the Fully Conditional Specification Method and created 43 datasets, as 43% of the cases had at least 1 missing value.29 In total, 4.7% of the data were missing. The imputation included the variables that were used in the final model.