Considerations on sample size and power calculations in randomized clinical trials

Arthroscopy

Volumn 19, Issue 9, 2003, Pages 991-996

  Karlsson, Jon ^a   Engebretsen, Lars ^b   Dainty, Katie ^a,c,d  

^a SAHLGRENSKA UNIVERSITY HOSPITAL   (Sweden)

^b Fowler Kennedy Sport Medicine Clinic ^*  (Norway)

^c Fowler Kennedy Sport Medicine Clinic   (Canada)

^d UNIVERSITY OF WESTERN ONTARIO   (Canada)

Author keywords

Effect size; Level of significance; Power; Sample size; Type I error; Type II error

Indexed keywords

EID: 63549106357     PISSN: 07498063     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0749-8063(03)00837-5     Document Type: Article

References (6)

1. Friedman LM, Furberg CD. Demets DL. Sample size. In: Fundamentals of clinical epidemiology. New York: Mosby, 1996;94-125.
2. Pocock SJ. Clinical trials, a practical approach. Chichester: Wiley, 1983.
3. Bland JM, Altman DG. One and two sided tests of significance. BMJ 1994;309:248.
4. Dunnett CW, Gent M. An alternative to the use of two-sided tests in clinical trials. Stat Med 1996;15:1729-1738.
5. Koch GG. One-sided and two-sided tests and P values. J Biopharm Stat 1991;1:161-170.
6. Peace KE. The alternative hypothesis: One-sided or two-sided? J Clin Epidemiol 1989;42:473-476.