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Table 1 Descriptive statistics of the sample sizes of eligible articles across the three journals

From: Characterising and justifying sample size sufficiency in interview-based studies: systematic analysis of qualitative health research over a 15-year period

Sample size of studies

BMJ (n = 21)

BJHP (n = 53)

SHI (n = 140)

Mean (SD) number of interviews

44.5 (29.3)

18.1 (10.4)

37.4 (28)

Min number of interviews

19

6

7

Max number of interviews

128

55

197

Median

31

15

30.5