Exact(6)
We then used Lu and Treiman's (2008) method to set up a dummy variable representing that the father's ISEI score is missing (father's ISEI information is missing = 1).
If > 50% of items were missing, the scale score is missing.
For depression, however, the depression score is missing for all individuals with cognitive impairment (n = 174) and for those who are missing on the cognitive test (n = 101).
Hence we can use all of the data, i.e., if a score is missing, it has no effect on other scores from that same patient.
We remove the data for 4 individuals where the MMSE sum score is missing and/or there is no time of observation.
One subject did not respond to all required items needed to calculate a mean BPI pain severity score, so the subject's pain severity score is missing.
Similar(2)
When one or two monitoring parameters necessary to calculate the score were missing, the score was still calculated and the missing value was considered normal and these scores were called "imputed scores".
† the Abstract Reasoning score was missing for one student.
Related(1)
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