Variation in charges for 10 common blood tests in California hospitals

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“We conducted a cross-sectional analysis of the degree of charge variation between hospitals for 10 common blood tests using charge data reported by all non-federal California hospitals to the California Office of Statewide Health Planning and Development in 2011.” Hsia et al (2014).

Reference:

Hsia, R.Y., Antwi, Y.A. and Nath, J.P. (2014) Variation in charges for 10 common blood tests in California hospitals: a cross-sectional analysis. BMJ Open 2014;4:e005482 doi:10.1136/bmjopen-2014-005482.

Abstract:

Objectives: To determine the variation in charges for 10 common blood tests across California hospitals in 2011, and to analyse the hospital and market-level factors that may explain any observed variation.

Design, setting and participants: We conducted a cross-sectional analysis of the degree of charge variation between hospitals for 10 common blood tests using charge data reported by all non-federal California hospitals to the California Office of Statewide Health Planning and Development in 2011.

Outcome measures: Charges for 10 common blood tests at California hospitals during 2011.

Results: We found that charges for blood tests varied significantly between California hospitals. For example, charges for a lipid panel ranged from US$10 to US$10 169, a thousand-fold difference. Although government hospitals and teaching hospitals were found to charge significantly less than their counterparts for many blood tests, few other hospital characteristics and no market-level predictors significantly predicted charges for blood tests. Our models explained, at most, 21% of the variation between hospitals in charges for the blood test in question.

Conclusions: These findings demonstrate the seemingly arbitrary nature of the charge setting process, making it difficult for patients to act as true consumers in this era of ‘consumer-directed healthcare.’

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http://bmjopen.bmj.com/content/4/8/e005482.full.pdf

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