Sample Size determination for Censored Data

  • Naseem Asghar
  • Umair Khalil
  • Dost Muhammad Khan
  • Zardad Khan
  • Iftikhar Ud Din
Keywords: Censored data, Kaplan-Meier estimator, Sample size, Sampling with replacement, Simulation

Abstract

This study aims to describe sample size determination procedure in survival analysis using a real-world example. In this method simulation is used for sample size and precision calculations with censored data that concentrates on various sample sizes involved in carrying out the estimates and precision calculation. The Kaplan-Meier (K-M) estimator is chosen as a point estimator, and the precision measurement focuses on the mean square error, standard error, and confidence limits. Information obtained on the recovery time, in days, of patients from the population are compared with results taken from the sample group. Results showed a cutoff point of sample of size 675 on the basis of mean square error, standard error and confidence limit. 

Author Biographies

Naseem Asghar

Lecturer, Department of Mathematics & Statistics, University of Swat, Pakistan. 

Umair Khalil

Associate Professor, Department of Statistics, Abdul Wali Khan University Mardan, Pakistan. 

Dost Muhammad Khan

Associate Professor, Department of Statistics, Abdul Wali Khan University Mardan, Pakistan. 

Zardad Khan

Assistant Professor, Department of Statistics, Abdul Wali Khan University Mardan, Pakistan. 

Iftikhar Ud Din

Assistant Professor, Public Health, Bacha Khan Medical College, Mardan, Pakistan. 

Published
2021-06-17
How to Cite
Asghar, N., Khalil, U., Khan, D., Khan, Z., & Din, I. (2021). Sample Size determination for Censored Data. International Journal of Ayurvedic Medicine, 12(2), 267-269. https://doi.org/10.47552/ijam.v12i3.1859
Section
Research Articles