Estimation of biomarker distributions using laboratory data collected during routine delivery of medical care.

View Abstract

PURPOSE

To examine the extent to which commonly ordered laboratory values obtained from large health care databases are representative of the distribution of laboratory values from the general population as reflected in the National Health and Nutrition Examination Survey.

METHODS

Means of test values from commercial insurance laboratory data and National Health and Nutrition Examination Survey data were compared. Inverse probability of selection weighting was used to account for possible selection bias and to create comparability between the two data sources.

RESULTS

The average values of most of the laboratory results from routine care were very close to their population means as estimated from NHANES. Tests that were more selectively ordered tended to differ. The inverse probability of selection weighting approach generally had a small effect on the estimated means but did improve estimation of some of the more selected tests.

CONCLUSIONS

Commonly ordered laboratory tests appear to be representative of values from the underlying population. This suggests that trends and other patterns in biomarker levels in the population may be reasonably studied using data collected during the routine delivery of medical care.

Investigators
Abbreviation
Ann Epidemiol
Publication Date
2014-08-06
Volume
24
Issue
10
Page Numbers
754-61
Pubmed ID
25238941
Medium
Print-Electronic
Full Title
Estimation of biomarker distributions using laboratory data collected during routine delivery of medical care.
Authors
Brookhart MA, Todd JV, Li X, Reams BD, Pate V, Kshirsagar AV