Sample size determination for clustered right-censored data using copula models

2015 ◽  
Vol 86 (4) ◽  
pp. 696-706 ◽  
Author(s):  
Pei-Fang Su
Keyword(s):  
Sample Size ◽  
Censored Data ◽  
Sample Size Determination ◽  
Size Determination ◽  
Right Censored Data ◽  
Copula Models

scholarly journals Sample Size determination for Censored Data

2021 ◽  
Vol 12 (2) ◽  
pp. 267-269
Author(s):  
Naseem Asghar ◽  
Umair Khalil ◽  
Dost Muhammad Khan ◽  
Zardad Khan ◽  
Iftikhar Ud Din
Keyword(s):  
Sample Size ◽  
Mean Square Error ◽  
Censored Data ◽  
Standard Error ◽  
Sample Size Determination ◽  
Mean Square ◽  
Size Determination ◽  
Kaplan Meier ◽  
M Estimator ◽  
Point Estimator

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. 

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