Additional Support for Simple Imputation of Missing Quality of Life Data in Nursing Research
Table 1
Mean values for imputed and sample data.
Data source
PCS mean (SD)
MCS mean (SD)
Missing data estimation ()*
37.9 (11.5)
47.7 (10.3)
Assignment of mean score ()*
38.3 (10.1)
47.8 (10.4)
Difference (AMS-MDE)
0.35 (1.09)
0.16 (1.14)
Sample without imputed data ()
39.2 (9.9)
51.6 (9.8)
Sample with missing data estimation ()
39.1 (10.0)
51.4 (9.9)
Sample with assignment of mean score ()
39.1 (9.9)
51.4 (9.9)
PCS: Physical Component Summary; MCS: Mental Component Summary; SD: standard deviation; AMS: assignment of mean score; MDE: missing data estimation.
*Intraclass correlation between the two imputed PCS scores was .991, ; between the two MCS scores it was .997, .
