Sample Size Calculation
Data Validation
Formulating and Validating Nursing Diagnosis II
Nursing Interventions II: Selecting and Classifying the Nursing Interventions
Formulating and Validating Nursing Diagnosis I
Sample Proportion and Population Proportion
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Updated: Jul 21, 2025

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
Published on: July 29, 2020
Joko Gunawan1,2, Colleen Marzilli3, Yupin Aungsuroch1
1Faculty of Nursing, Chulalongkorn University, Bangkok, Thailand.
Using a sample size of thirty is common but inadequate for questionnaire development and validation. This editorial guides researchers on appropriate sample size selection to avoid manuscript rejections and ensure robust nursing research.
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