... for other items, PF and SF scores MNARPF9 Walk one block 2.8% Chronic disease, Number of missing data for other items, PF score MNARPF10 Bathe, dress 5.4% Age, Number of missing data for other ... imputation technique to correct for biasesassociated with missing values when using the SF-36. The personal mean score, where the imputed value of amissing item is the mean of the non-missing ... the non-missing items of the same scale, has been recommended for use with the SF-36 [15,16]. Other imputation me thods, notably the hot deck [21] and multiple imputation [22,23], havebeen gaining...