Gunawan, J., Marzilli, C., & Aungsuroch, Y. (2021). Establishing appropriate sample size for developing and validating a questionnaire in nursing research. Belitung Nursing Journal, 7(5), 356-360. [Free Download].
The number thirty is often used as the sample size in multiple questionnaires and identified as appropriate for validation of nursing research. However, this is not the best tool or strategy for sample size selection for development and validation, and this often causes immediate rejections of manuscripts. This editorial aims to provide an overview of the appropriate sample size for questionnaire development and validation.
The significance of this editorial is the rejection rate (>85%) of the research articles submitted to the Belitung Nursing Journal (BNJ). The most common reasons for rejection are related to the sample size for instrument development and validation. Therefore, it is important to provide an explanation of the rationale for the appropriate sample size so it is clearly established.
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