Document Type
Article
Publication Date
4-26-2023
Publication Title
PLoS ONE
DOI
10.1371/journal. pone.0278700
Abstract
Cox’s proportional hazards model (PH) is an acceptable model for survival data analysis. This work investigates PH models’ performance under different efficient sampling schemes for analyzing time to event data (survival data). We will compare a modified Extreme, and Double Extreme Ranked Set Sampling (ERSS, and DERSS) schemes with a simple random sampling scheme. Observations are assumed to be selected based on an easy-to-evaluate baseline available variable associated with the survival time. Through intensive simulations, we show that these modified approaches (ERSS and DERSS) provide more powerful testing procedures and more efficient estimates of hazard ratio than those based on simple random sampling (SRS). We also showed theoretically that Fisher’s information for DERSS is higher than that of ERSS, and ERSS is higher than SRS. We used the SEER Incidence Data for illustration. Our proposed methods are cost saving sampling schemes.
Recommended Citation
Samawi, Hani, Lili Yu, Jingjing Yin.
2023.
"On Cox Proportional Hazards Model Performance Under Different Sampling Schemes."
PLoS ONE: 1-15: PLOS.
doi: 10.1371/journal. pone.0278700
https://digitalcommons.georgiasouthern.edu/bee-facpubs/377
Copyright
Copyright: © 2023 Samawi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Georgia Southern University faculty members, Hani SamawiI, Lili Yu, and JingJing Yin co-authored On Cox Proportional Hazards Model Performance Under Different Sampling Schemes.