Sample size calculation formula in

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

HAERI MEHRIZI ALI ASGHAR; SADIGHI JILA

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Payesh Year:2023 | Volume: | Issue: Page(s): 127-129

Download Full-Text

Persian Verion

View:

Download:

Cites:

Information Journal Paper

Title

Sample size calculation formula in "before-after" intervention studies with qualitative outcomes (Letter to editor)

Author(s)

HAERI MEHRIZI ALI ASGHAR | SADIGHI JILA | Issue Writer Certificate

Keywords

Interventional Design

Sample Size

Abstract

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 for such studies is proposed to overcome problems highlighted above....

Cites

No record.

References

Letter to editor: Why should we report the correlation coefficient or the variance of the score differences in "beforeafter" intervention studies when the dependent variable is quantitative?

Cite

APA: Copy

HAERI MEHRIZI, ALI ASGHAR, & SADIGHI, JILA. (2024). Sample size calculation formula in "before-after" intervention studies with qualitative outcomes (Letter to editor). PAYESH, 23(1 ), 127-129. SID. https://sid.ir/paper/1112355/en

Vancouver: Copy

HAERI MEHRIZI ALI ASGHAR, SADIGHI JILA. Sample size calculation formula in "before-after" intervention studies with qualitative outcomes (Letter to editor). PAYESH[Internet]. 2024;23(1 ):127-129. Available from: https://sid.ir/paper/1112355/en

IEEE: Copy

ALI ASGHAR HAERI MEHRIZI, and JILA SADIGHI, “Sample size calculation formula in "before-after" intervention studies with qualitative outcomes (Letter to editor),” PAYESH, vol. 23, no. 1 , pp. 127–129, 2024, [Online]. Available: https://sid.ir/paper/1112355/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops