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- W2892057519 abstract "This chapter discusses the problem of incomplete or missing data. The three types of missing data mechanisms are examined: missing completely at random (MCAR), missing at random (MAR), and missing not at random (MNAR). It discusses how to reduce its occurrence using trial design and improving the data collection process. The chapter also provides methods to control this factor during the analysis stage, using some strategies such as not replacing the lost data (complete case analysis), replacing each lost value with a single value (single imputation), replacing the lost data with multiple values for each lost observation (multiple imputation). It then discusses sensitivity analysis, which measures the impact on the results from different methods of handling missing data, and it helps to justify the choice of the particular method applied. Finally, it reviews covariate adjustment as another topic in statistics." @default.
- W2892057519 created "2018-09-27" @default.
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- W2892057519 date "2018-03-01" @default.
- W2892057519 modified "2023-09-25" @default.
- W2892057519 title "Other Issues in Statistics I" @default.
- W2892057519 doi "https://doi.org/10.1093/med/9780199324491.003.0013" @default.
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