Selection bias results when exposure in the reference period is not identical to exposure in the “hazard.” In this case the exposure must be controlled with time as a critical element supporting such uniformity of exposure. If exposure is identical then elements the confounders that could contribute to selection bias. Bias is reduced by using shorter reference spacing lengths. This is exactly the reason that our intervention studies are time limited

Bateson TF; Schwartz J

Selection bias results when exposure in the reference period is not identical to exposure in the “hazard.” In this case the exposure must be controlled with time as a critical element supporting such uniformity of exposure. If exposure is identical then elements the confounders that could contribute to selection bias. Bias is reduced by using shorter reference spacing lengths. This is exactly the reason that our intervention studies are time limited

Bateson TF, Schwartz J2001Selection bias and confounding in case-crossover analyses of environmental time-series data. Epidemiology

Summary

No abstract is available for this paper. It was published in Selection bias and confounding in case-crossover analyses of environmental time-series data. Epidemiology in 2001 by Bateson TF and colleagues.

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