Evaluating a study's design and methodology involves scrutinizing how the research was conducted. Key questions include:
Study Type: Is it a randomized controlled trial, cohort study, case-control study, or qualitative research? Each type has its strengths and weaknesses. Sample Size: Was the sample size adequate to detect a meaningful effect? Randomization: If applicable, was randomization done properly to minimize selection bias? Blinding: Were the participants and researchers blinded to the treatment to prevent bias? Data Collection: Were the data collection methods valid and reliable?