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Cited by 6Statistical Methods in Clinical TrialsStatistical Methods in EpidemiologyMeta-analysis and systematic reviews

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

Sample Size Calculations

Twisk, Jos W. R.·2021·Analysis of Data from Randomized Controlled Trials
DOI 10.1007/978-3-030-81865-4_10
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Crossref · 10.1007/978-3-030-81865-4_10

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5 of 5 references verified0 citation errors · 0 not checkable

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  • The sample size of N = 73 suffices to reach more than 80% power to detect at a significance level of 0.05 a difference of 30% in dropout rates during the first year between 20% and 50%.

    “Moreover, the sample size of N = 73 suffices to reach more than 80% power to detect at a significance level of 0.05, a difference of 30% in dropout rates during the first year between 20% [which is the approximate dropout rate of ST in individual-group format at 1 year; (26)] and 50%, which would be a substantial and alarming increase in the experimental treatment (25, 28).”

    From Timing of imagery rescripting during schema therapy for borderline personality disorder: the LUCY trial (2023) · cites this paper as [25]

  • The planned sample of at least N = 73 participants, with seven repeated measurements and an assumed average correlation of 0.5, provides 80% power to detect a medium effect size of d = 0.5 between treatment conditions.

    “At least N = 73 participants were planned to be included. Using the approximation proposed by Twisk (25), and assuming an average correlation of 0.5 between measurements [as in (26)], this suffices, given the seven repeated measurements, to reach 80% power to detect a medium effect size of d = 0.5 between the treatment conditions.”

    From Timing of imagery rescripting during schema therapy for borderline personality disorder: the LUCY trial (2023) · cites this paper as [25]

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Metadata

Authors
Twisk, J. W. R.
Affiliations
Amsterdam University Medical Centers (NL)
Corresponding author
Twisk, Jos W. R.
ORCID
Twisk, Jos W. R.
Venue
Analysis of Data from Randomized Controlled Trials
Publisher
Springer International Publishing
Published
2021
Pages
151-155
DOI
10.1007/978-3-030-81865-4_10
OpenAlex
W4248797090
Cited by
6
References
5
Citations by year
2024: 1 · 2023: 2 · 2022: 1 · 2021: 2
FWCI
7.73
Type
book chapter
Language
en
Open access
closed
Licence
Locations
Springer eBooks (publishedVersion)
Topics
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Clinical Trials
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
Keywords
sample size determination, continuous outcomes, binary outcomes, clustered data, longitudinal study design, statistical power

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