Statistical applications in orthodontics part III. How large a study is needed?

Journal of Orthodontics

Volumn 28, Issue 2, 2001, Pages 169-172

  Newcombe, Robert G ^a  

^a CARDIFF UNIVERSITY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; CHI SQUARE DISTRIBUTION; CONFIDENCE INTERVAL; HUMAN; METHODOLOGY; ORTHODONTICS; PROBABILITY; SAMPLE SIZE; STATISTICS;

CHI-SQUARE DISTRIBUTION; CONFIDENCE INTERVALS; HUMANS; ORTHODONTICS; PROBABILITY; RESEARCH DESIGN; SAMPLE SIZE;

EID: 0035380656     PISSN: 14653125     EISSN: None     Source Type: Journal    
DOI: 10.1093/ortho/28.2.169     Document Type: Article

References (7)

1. Altman, D. G. (1980) Statistics and ethics in medical research. III. How large a sample? British Medical Journal, 281, 1336-1338. (Pubitemid 10029868)
2. Heasman, P. A., MacGregor I. D. M., Wilson, Z. and Kelly, P. J. (1998) Toothbrushing forces in children with fixed orthodontic appliances, British Journal of Orthodontics, 25, 187-190.
3. Machin, D. and Campbell, M. G. (1987) Statistical Tables for the Design of Clinical Trials, Blackwell, Oxford.
4. Newcombe, R. G. (2000a) Statistical methods in orthodontics. Part I. Confidence intervals: An introduction. Journal of Orthodontics, 27, 270-272.
5. Newcombe, R. G. (2000b) Statistical methods in orthodontics. Part II. Confidence intervals for proportions and their differences, Journal of Orthodontics, 27, 339-340.
6. nQuery Advisor, Release 3 (1998) Statistical Solutions, Cork.
7. Sargison, A. E., McCabe, J. F. and Millett, D. T. (1999) A laboratory investigation to compare enamel preparation by sandblasting or acid etching prior to bracket bonding. British Journal of Orthodontics, 26, 141-146.