Analysis of the use of sample size calculation and error of method in researches published in Brazilian and international orthodontic journals

Dental Press Journal of Orthodontics

Volumn 16, Issue 6, 2012, Pages

  Normando, David ^a   Almeida, Marco Antonio de Oliveira ^b   Quintão, Cátia Cardoso Abdo ^b  

^a FEDERAL UNIVERSITY OF PARÁ   (Brazil)

^b FEDERAL UNIVERSITY OF RIO DE JANEIRO   (Brazil)

Author keywords

Biostatistics; Error of methods; Sample size

Indexed keywords

EID: 84857878545     PISSN: 21769451     EISSN: None     Source Type: Journal    
DOI: 10.1590/s2176-94512011000600006     Document Type: Article

References (13)

1. Browner WS, Newman TB. Sample size and power based on the population attributable fraction. Am J Public Health. 1998;79(9):1289-94.
2. Freiman JA, Chalmers TC, Smith H Jr, Kuebler RR. The importance of beta, the type II error and sample size in the design and interpretation of the randomized control trial. Survey of 71 "negative" trials. N Engl J Med. 1978;299(13):690-4.
3. Houston WJ. The analysis of errors in orthodontic measurements. Am J Orthod. 1983;83(5):382-90.
4. nd ed. Baltimore: Williams and Wilkins; 2001.
5. Last JM. Making the dictionary of epidemiology. Int J Epidemiol. 1996;25(5):1098-101.
6. Lenth RV. Some practical guidelines for effective sample size determination. Am Statistician. 2001;55(3):187-93.
7. MacFarlane TV. Sample size determination for research projects. J Orthod. 2003;30(2):99-100.
8. Normando D, Tjäderhane L, Quintão CCA. A PowerPointbased guide to assist in choosing the suitable statistical test. Dental Press J Orthod. 2010;15(1):101-6.
9. National Institute of Dental and Craniofacial Research. Policies and Procedures for Investigator Initiated Clinical Trials. [Cited 2008 Feb 10]. Available from: www.nidcr.nih. gov/ClinicalTrials/ClincalTrialsProgram/DataCoordinator.htm.
10. Phillips C. Sample size and power. What is enough? Semin Orthod. 2002;8:67-76.
11. Thornley B, Adams C. Content and quality of 2000 controlled trials in schizophrenia over 50 years. BMJ. 1998;31(317):1181-4.
12. Torgerson DJ, Miles JN. Simple sample size calculation. J Eval Clin Pract. 2007;13(6):952-3.
13. Valladares JVN, Domingues MHMS, Capelozza Filho L. Pesquisa em Ortodontia: bases para a produção e a análise crítica. Rev Dental Press Ortod Ortop Facial. 2000;5(4):89-105.