Validity and reliability in quantitative studies

Abstract

Evidence-based practice includes, in part, implementation of the findings of well-conducted quality research studies. So being able to critique quantitative research is an important skill for nurses. Consideration must be given not only to the results of the study but also the rigour of the research. Rigour refers to the extent to which the researchers worked to enhance the quality of the studies. In quantitative research, this is achieved through measurement of the validity and reliability.

Two Criteria for Good Measurements in Research: Validity and Reliability

“…Yoshida et al (2017) have analyzed the Patient Centred Assessment Method and have determined that is a valid and reliable scale for assessing patient complexity in the initial phase of admission to a secondary care hospital. Roberta Heale and Alison Twycross have briefly discussed the aspects of the validity and reliability in the quantitative research [Heale & Twycross, 2015].…”

How to appraise quantitative research

“…Data collection should be systematic, objective, precise, repeatable, valid and reliable. Any tool (eg, a questionnaire) used for data collection should have been piloted (or pretested and/or adjusted) to ensure the quality, validity and reliability of the tool 9. The participants (the sample) and any randomisation technique used should be identified.…”

Translation and Cultural Adaptation of the Psychological Empowerment Instrument For the Brazilian Context

“…[15][16][17][18] Para validar o instrumento, utilizou-se a análise fatorial confirmatória, demonstrando-se que cada item está apropriado ao seu domínio e que os quatro domínios contribuem para uma construção geral do empoderamento psicológico.…”