I want to select variables to enter into the multivariable analysis by doing a bivariable analysis but the number of variables are limited,so is there any ground rule in such condition?
when selecting variables for multivariable analysis based on bivariate analysis results, several ground rules can guide the process. Start by focusing on variables directly relevant to your research question, emphasizing those with strong associations with the outcome variable. Ensure independence among selected variables to avoid multicollinearity issues. Consider theoretical relevance, practical significance, and data quality when prioritizing variables. Finally, balance feasibility constraints by selecting a manageable number of variables that can be effectively analyzed given available resources. Following these guidelines can help optimize variable selection and enhance the validity and interpretability of multivariable analysis results.
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