Why should we report the correlation coefficient or the variance of the score differences in "before-after" intervention studies when the dependent variable is continuous?
Dear Editor, Sample size calculation is one of the most important steps in developing a plan for research projects/dissertations. The sample size affects the power of the study and also has economic implications for a research project. If the sample size would be less than the required level, the te...
| Main Authors: | , |
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| Format: | Article |
| Language: | fas |
| Published: |
Iranian Institute for Health Sciences Research
2023-10-01
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| Series: | Payesh |
| Subjects: | |
| Online Access: | http://payeshjournal.ir/article-1-2215-en.pdf |