Measurement error in two-stage analyses, with application to air pollution epidemiology.
Measurement error in two-stage analyses, with application to air pollution epidemiology.
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DOI:
10.1002/env.2233
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发表时间:
2013-12-01
期刊:
影响因子:
1.7
通讯作者:
Paciorek, Christopher J.
中科院分区:
文献类型:
--
作者:
Szpiro, Adam A.;Paciorek, Christopher J.
Public health researchers often estimate health effects of exposures (e.g., pollution, diet, lifestyle) that cannot be directly measured for study subjects. A common strategy in environmental epidemiology is to use a first-stage (exposure) model to estimate the exposure based on covariates and/or spatio-temporal proximity and to use predictions from the exposure model as the covariate of interest in the second-stage (health) model. This induces a complex form of measurement error. We propose an analytical framework and methodology that is robust to misspecification of the first-stage model and provides valid inference for the second-stage model parameter of interest. We decompose the measurement error into components analogous to classical and Berkson error and characterize properties of the estimator in the second-stage model if the first-stage model predictions are plugged in without correction. Specifically, we derive conditions for compatibility between the first- and second-stage models that guarantee consistency (and have direct and important real-world design implications), and we derive an asymptotic estimate of finite-sample bias when the compatibility conditions are satisfied. We propose a methodology that (1) corrects for finite-sample bias and (2) correctly estimates standard errors. We demonstrate the utility of our methodology in simulations and an example from air pollution epidemiology.
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影响因子:
1.7
作者:
Fanshawe, T. R.;Diggle, P. J.;Pless-Mulloli, T.
通讯作者:
Pless-Mulloli, T.
影响因子:
3.5
作者:
DEMENT, JM;HARRIS, RL;SHY, CM
通讯作者:
SHY, CM
DOI:
10.1038/sj.jea.7500388
发表时间:
2005-03-01
期刊:
JOURNAL OF EXPOSURE ANALYSIS AND ENVIRONMENTAL EPIDEMIOLOGY
影响因子:
--
作者:
Jerrett, M;Arain, A;Giovis, C
通讯作者:
Giovis, C
影响因子:
5
作者:
Bild, DE;Bluemke, DA;Tracy, RP
通讯作者:
Tracy, RP
影响因子:
1.8
作者:
Hodges, James S.;Reich, Brian J.
通讯作者:
Reich, Brian J.