Sample size calculation formula in "before-after" intervention studies with qualitative outcomes
Dear Editor, In “before-after" intervention studies with qualitative outcome(s), we should not use the same formula when the outcome(s) are quantitative since the appropriate variance in this formula are not used and thus the sample size will not have adequate confidence and power. A formula f...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Iranian Institute for Health Sciences Research
2024-02-01
|
| Series: | Payesh |
| Subjects: | |
| Online Access: | http://payeshjournal.ir/article-1-2320-en.pdf |