Concepedia

Sample Size Calculation

Sample Size Calculation is a statistical procedure that determines the minimum number of participants required in a study to ensure sufficient power to detect a meaningful effect within a randomized controlled trial, distinguishing it from related methodological components by its specific focus on achieving inferential precision and validity.

10.7K

Publications

899.7K

Citations

33.4K

Authors

7.4K

Institutions

Publications per year

2017–2026

3.3K

Parents

Publications

10.7K

How Many Interviews Are Enough?

Greg Guest, Arwen Bunce, Laura Johnson · Field Methods · 2005 · 19.4K citations

, , +16

Investigation of the freely available easy-to-use software ‘EZR’ for medical statistics

Yoshinobu Kanda · Bone Marrow Transplantation · 2012 · 18.7K citations

, , +11

Determining Sample Size for Research Activities

Robert V. Krejcie, Daryle W. Morgan · Educational and Psychological Measurement · 1970 · 18.1K citations

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Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range

Xiang Wan, Wenqian Wang, Jiming Liu et al. · BMC Medical Research Methodology · 2014 · 11.2K citations · Full text

, , +14

Sample Size in Qualitative Interview Studies

Kirsti Malterud, Volkert Siersma, Ann Dorrit Guassora · Qualitative Health Research · 2015 · 11.1K citations

, , +15

1–5 of 10.7K

Authors

33.4K

  1. SA
    Steven A. Julious

    University of Sheffield, United Kingdom

    26 publications · 7.5K citations

    21

    h-index

  2. GS
    Gary S. Collins

    University of Oxford, United Kingdom

    20 publications · 8K citations

    19

    h-index

  3. MK
    Meinhard Kieser

    Heidelberg University, Germany

    24 publications · 1.5K citations

    19

    h-index

  4. TF
    Tim Friede

    Universitätsmedizin Göttingen, Germany

    25 publications · 943 citations

    17

    h-index

  5. GS
    Gwowen Shieh

    National Yang Ming Chiao Tung University, Taiwan

    21 publications · 872 citations

    16

    h-index

1–5 of 33.4K

Institutions

7.4K

  1. University of Oxford

    Oxford, United Kingdom

    45 h-index

    191 publications

    27.7K citations

  2. University College London

    London, United Kingdom

    44 h-index

    350 publications

    21.1K citations

  3. Harvard University

    Cambridge, United States

    43 h-index

    261 publications

    19.5K citations

  4. University of Toronto

    Toronto, Canada

    41 h-index

    163 publications

    10.5K citations

  5. Stanford University

    Stanford, United States

    41 h-index

    148 publications

    16.6K citations

  6. University of North Carolina at Chapel Hill

    Chapel Hill, United States

    39 h-index

    175 publications

    16K citations

  7. University of Washington

    Seattle, United States

    38 h-index

    159 publications

    12K citations

  8. McMaster University

    Hamilton, Canada

    37 h-index

    163 publications

    22.3K citations

1–8 of 7.4K

Venues

  1. Statistics in Medicine

    417 publications · 34.7K citations

    88

    h-index

  2. PubMed

    Repository · 345 publications · 19.9K citations

    69

    h-index

  3. Biometrics

    143 publications · 13.7K citations

    55

    h-index

  4. Journal of the American Statistical Association

    120 publications · 14.5K citations

    49

    h-index

  5. PLoS ONE

    134 publications · 11.9K citations

    46

    h-index

1–5