Basic & Clinical Biostatistics, 4th Edition
Appendix C: Flowcharts for Relating Research Questions to Statistical Methods
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Flowchart to Use
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Research Questions
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C-1
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Is there a difference in means or medians (ordinal or numerical measures)?
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C-2
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Is there a difference in means or medians (ordinal or numerical measures, three or more groups)?
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C-3
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Is there a difference in proportions (nominal measurs)?
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C-4
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Is there an association?
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C-5
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Is there a difference in measures of association?
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C-6
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Are there two or more independent variables?
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Figure C-1. Is there a difference in means or medians (ordinal or numerical measures)?
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Figure C-2. Is there a difference in means or medians (ordinal or numerical measures, three or more groups)?
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Figure C-3. Is there a difference in proportions (nominal measures)?
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Figure C-4. Is there an association?
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Figure C-5. Is there a difference in measures of association?
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Figure C-6. Are there two or more independent variables?
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