[1] A. El-Helbawy, M. Adel-Sabour and S. M. Abdel-Nabi, Sample size
determination for follow-up studies of lifetime with covariates, The
first conference on statistics and its commercial and economical
applications, Helwan University, Faculty of Commerce and Business
Administration, Dept. of Mathematics, Insurance, and Applied
Statistics (2002), 123-138.
[2] B. S. Everitt, The Cambridge Dictionary of Statistics, Cambridge
University Press, 1998.
[3] C. Teddlie and F. Yu, Mixed methods sampling a typology with
examples, Journal of Mixed Methods Research 1 (2007), 77-100.
[4] H. Pezeshk, Bayesian techniques for sample size determination in
clinical trials: A short review, Statistical Methods in Medical
Research 12 (2003), 489-504.
[5] J. B. Grossman, Optimal sample designs with preliminary tests of
significance, Journal of Business & Economics Statistics 4(2) (1986),
76-171.
[6] L. Naing, T. Winn and B. N. Rusli, Practical Issues in Calculating
the Sample Size of Prevalence Studies, Archives of Orofacial Sciences,
2006.
[7] M. C. Sheps and A. F. M. Moustafa, Some considerations affection
the design of follow-up studies, Egypt. Statist. J. 19(2) (1975),
76-85.
[8] M. Palta and R. Mchugh, Adjusting for losses to follow-up in
sample size determination for cohort studies, J. Chiron. Dis. 32
(1979), 315-326.
[9] R. C. Elandt-Johnson and N. L. Johnson, Survival Models and Data
Analysis, John Wiley, 1980.