There are many active research projects accessing and applying shared ADNI data. Use the search above to find specific research focuses on the active ADNI investigations. This information is requested annually as a requirement for data access.
| Principal Investigator | |
| Principal Investigator's Name: | Yichuan Zhao |
| Institution: | Georgia State University |
| Department: | Mathematics and Statistics |
| Country: | |
| Proposed Analysis: | This paper considers inference about the sensitivity to the early disease stage based on three independent generalized order statistics samples from the non-diseased, early-diseased stage and fully diseased populations that are belonging to the lower truncated proportional hazard rate models with the same baseline distributions. The maximum likelihood estimator, a generalized pivotal estimator and some Bayes estimators are obtained for different structures of prior distributions. The percentile bootstrap condence interval, a generalized pivotal confidence interval and some Bayesian credible intervals are also presented. A Monte-Carlo simulation study is used to evaluate the performances of the obtained point estimators and confidence/credible intervals. The proposed procedures are further applied to Alzheimer's Disease Neuroimaging Initiative data set. |
| Additional Investigators | |
| Investigator's Name: | Hossein Nadeb |
| Proposed Analysis: | This paper considers inference about the sensitivity to the early disease stage based on three independent generalized order statistics samples from the non-diseased, early-diseased stage and fully diseased populations that are belonging to the lower truncated proportional hazard rate models with the same baseline distributions. The maximum likelihood estimator, a generalized pivotal estimator and some Bayes estimators are obtained for different structures of prior distributions. The percentile bootstrap confidence interval, a generalized pivotal confidence interval and some Bayesian credible intervals are also presented. A Monte-Carlo simulation study is used to evaluate the performances of the obtained point estimators and confidence/credible intervals.The proposed procedures are further applied to Alzheimer's Disease Neuroimaging Initiative data set. |
