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Table 2 The root mean squared differences.

From: Practical methods for dealing with 'not applicable' item responses in the AMC Linear Disability Score project

  Cold deck 1st run hot deck 2nd run hot deck Mean 5 runs hot deck Items never offered
1st run hot deck 0.5462     
2nd run hot deck 0.5712 0.0518    
Mean 5 runs hot deck 0.5493 0.0280 0.0396   
Items never offered 0.5317 0.0358 0.0496 0.0249  
Tendency to respond 0.5316 0.0351 0.0494 0.0242 0.0020
  1. The root mean squared differences. Using the root mean squared difference to compare the estimates of item parameters obtained in the different procedures. 'Cold deck' denotes cold deck imputation, '1st hot deck' and '2nd hot deck' the first and second runs of the hot deck imputation procedure, respectively, 'Mean hot deck' the mean of all 5 runs of the hot deck imputation procedure, 'Never offered' the procedure treating 'not applicable' responses as if the item had never been offered to the patient and 'Tendency' the model taking account of the tendency to respond to items'.