Publicado

1985-01-01

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

Palabras clave:


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

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Autores/as

  • 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.

Cómo citar

APA

Roser, B. y 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. y Muñoz, A. 1985. The use of pilot study data in the estimation od sample size. Revista Colombiana de Estadística. 6, 11 (ene. 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 ago. 2024.

Chicago

Roser, Bernard, y 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. y Muñoz, A. (1985) «The use of pilot study data in the estimation od sample size», Revista Colombiana de Estadística, 6(11). Disponible en: https://revistas.unal.edu.co/index.php/estad/article/view/9874 (Accedido: 9 agosto 2024).

IEEE

[1]
B. Roser y A. Muñoz, «The use of pilot study data in the estimation od sample size», Rev. colomb. estad., vol. 6, n.º 11, ene. 1985.

MLA

Roser, B., y A. Muñoz. «The use of pilot study data in the estimation od sample size». Revista Colombiana de Estadística, vol. 6, n.º 11, enero de 1985, https://revistas.unal.edu.co/index.php/estad/article/view/9874.

Turabian

Roser, Bernard, y Alvaro Muñoz. «The use of pilot study data in the estimation od sample size». Revista Colombiana de Estadística 6, no. 11 (enero 1, 1985). Accedido agosto 9, 2024. 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]. 1 de enero de 1985 [citado 9 de agosto de 2024];6(11). Disponible en: https://revistas.unal.edu.co/index.php/estad/article/view/9874

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