Published

1985-01-01

The use of pilot study data in the estimation od sample size

Keywords:


Estadística matemática, Tamaño de la muestra, Curvas de potencia, Distribución binomial, Inferencia bayesiana, Estudio piloto (es)

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Authors

  • Bernard Roser Harvard Medical School
  • Alvaro Muñoz University School of Hygiene and Public Health Baltimore
In the two sample binomial case, one approach to the estimation of sample size is to conduct a pilot study and assume that the observed proportion in the pilot study have no sampling error and are in fact true population parameter which can be used directly in standard sample size formulas. This approach has conceptual difficultie swhen such a pilot study is small since there is typically considerable error in the observed proportions. In this paper; we propose an lternative method which takes into account the sampling error in pilot study data in the estimation of sample size for a larger study. Tables are provided comparing these two methods and it is shown that the former deterministic method may provide a grossly inaccurate estímate of the appropriate sample size for alarger study, partlcularly for small pilot studies.

How to Cite

APA

Roser, B. and Muñoz, A. (1985). The use of pilot study data in the estimation od sample size. Revista Colombiana de Estadística, 6(11). https://revistas.unal.edu.co/index.php/estad/article/view/9874

ACM

[1]
Roser, B. and Muñoz, A. 1985. The use of pilot study data in the estimation od sample size. Revista Colombiana de Estadística. 6, 11 (Jan. 1985).

ACS

(1)
Roser, B.; Muñoz, A. The use of pilot study data in the estimation od sample size. Rev. colomb. estad. 1985, 6.

ABNT

ROSER, B.; MUÑOZ, A. The use of pilot study data in the estimation od sample size. Revista Colombiana de Estadística, [S. l.], v. 6, n. 11, 1985. Disponível em: https://revistas.unal.edu.co/index.php/estad/article/view/9874. Acesso em: 9 apr. 2025.

Chicago

Roser, Bernard, and Alvaro Muñoz. 1985. “The use of pilot study data in the estimation od sample size”. Revista Colombiana De Estadística 6 (11). https://revistas.unal.edu.co/index.php/estad/article/view/9874.

Harvard

Roser, B. and Muñoz, A. (1985) “The use of pilot study data in the estimation od sample size”, Revista Colombiana de Estadística, 6(11). Available at: https://revistas.unal.edu.co/index.php/estad/article/view/9874 (Accessed: 9 April 2025).

IEEE

[1]
B. Roser and A. Muñoz, “The use of pilot study data in the estimation od sample size”, Rev. colomb. estad., vol. 6, no. 11, Jan. 1985.

MLA

Roser, B., and A. Muñoz. “The use of pilot study data in the estimation od sample size”. Revista Colombiana de Estadística, vol. 6, no. 11, Jan. 1985, https://revistas.unal.edu.co/index.php/estad/article/view/9874.

Turabian

Roser, Bernard, and Alvaro Muñoz. “The use of pilot study data in the estimation od sample size”. Revista Colombiana de Estadística 6, no. 11 (January 1, 1985). Accessed April 9, 2025. https://revistas.unal.edu.co/index.php/estad/article/view/9874.

Vancouver

1.
Roser B, Muñoz A. The use of pilot study data in the estimation od sample size. Rev. colomb. estad. [Internet]. 1985 Jan. 1 [cited 2025 Apr. 9];6(11). Available from: https://revistas.unal.edu.co/index.php/estad/article/view/9874

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Copyright (c) 1985 Revista Colombiana de Estadística

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