Characterising and justifying sample size sufficiency in interview-based studies: systematic analysis of qualitative health research over a 15-year period - Vasileiou, Konstantina; Barnett, Julie; Thorpe, Susan; Young, Terry (BMC medical research methodology, 2018)
Keywords: Data adequacy; Evaluation; Humans; Interviewing; Interviews; Interviews as Topic - methods; Interviews as Topic - statistics & numerical data; Medical research; Periodicals as Topic - statistics & numerical data; Qualitative health research; Qualitative interviews; Qualitative Research; Research design; Research Personnel - psychology; Researcher-Subject Relations - psychology; Researchers; Sample Size; Sample size characterisation; Sample size justification; Systematic Reviews as Topic; Theory; Sample size justification; Sample size; Qualitative health research; Qualitative interviews; Review; Sample size characterisation; Data adequacy; Systematic analysis