Bayesian modeling and prediction of accrual in multi-regional clinical trials.
Bayesian modeling and prediction of accrual in multi-regional clinical trials.
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DOI:
10.1177/0962280214557581
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发表时间:
2017-04
影响因子:
2.3
通讯作者:
Long Q
中科院分区:
文献类型:
--
作者:
Deng Y;Zhang X;Long Q
In multi-regional trials, the underlying overall and region-specific accrual rates often do not hold constant over time and different regions could have different start-up times, which combined with initial jump in accrual within each region often leads to a discontinuous overall accrual rate, and these issues associated with multi-regional trials have not been adequately investigated. In this paper, we clarify the implication of the multi-regional nature on modeling and prediction of accrual in clinical trials and investigate a Bayesian approach for accrual modeling and prediction, which models region-specific accrual using a nonhomogeneous Poisson process (NHPP) and allows the underlying Poisson rate in each region to vary over time. The proposed approach can accommodate staggered start-up times and different initial accrual rates across regions/centers. Our numerical studies show that the proposed method improves accuracy and precision of accrual prediction compared to existing methods including the NHPP model that does not model region-specific accrual.
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影响因子:
2
作者:
Gajewski, Byron J.;Simon, Stephen D.;Carlson, Susan E.
通讯作者:
Carlson, Susan E.
DOI:
10.1177/1740774512470316
发表时间:
2013
期刊:
Clinical trials (London, England)
影响因子:
--
作者:
Cai C;Yuan Y;Johnson VE
通讯作者:
Johnson VE
影响因子:
1.1
作者:
Donovan, JM;Elliott, MR;Heitjan, DF
通讯作者:
Heitjan, DF
影响因子:
1.5
作者:
Ying, Gui-shuang;Heitjan, Daniel F.
通讯作者:
Heitjan, Daniel F.
影响因子:
2
作者:
Li, Yisheng;Bekele, B. Nebiyou;Cook, John D.
通讯作者:
Cook, John D.