Details of refusal, exclusion, dropouts, and missing data were collected when available.
The project manager reviews consent materials and survey data to identify missing data and collect it soon after baseline.
However, to counteract the effect of missing data, data were collected from 450 households.
There was less than 1% missing data in the collected data.
Patient with missing data Data were collected by the authors who are pharmacists.
Data were prospectively registered by nurses on a special record for the project, missing data were retrospectively collected from hospital records.
NCR team applies different methods of data checking, communication, field visits, and reviewing prior entering the data electronically, in order to complete missing data on cancer collected from different health sectors and to avoid multiple registrations and duplication.
We agree with Myers [ 21] that if one anticipates missing data, one should collect information on the baseline covariates related to outcome that might predict missing in outcome.
Missing data from proxies are collected through telephone calls.
Missing data from proxies are collected through telephone calls, as is also information needed to fill in the CDR form.
