Sample size calculation formula in "before-after" intervention studies with qualitative outcomes

Author(s):

AliAsghar Haeri-Mehrizi* , Jila Sadighi

Message:
Article Type:
Editorial (دارای رتبه معتبر)
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.

Keywords:

Interventional Design , Sample Size

Language:
Persian
Published:
Payesh Journal, Volume:23 Issue: 1, 2024
Pages:
127 to 129
https://www.magiran.com/p2660876  
سامانه نویسندگان
  • Ali Asghar Haeri Mehrizi
    Corresponding Author (1)
    Instructor Health Metrics Research Center, Academic Center for Education, Culture and Research, Tehran, Iran
    Haeri Mehrizi، Ali Asghar
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