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. 2011 Dec 1;365(22):2049-52.
doi: 10.1056/NEJMp1110117. Epub 2011 Nov 2.

Geographic variation in physicians' responses to a reimbursement change

Mireille Jacobson  1 , Craig C Earle, Joseph P Newhouse
Affiliations

Geographic variation in physicians' responses to a reimbursement change

Mireille Jacobson et al. N Engl J Med. .
No abstract available

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Standardized Change in 30-Day Chemotherapy Rates by State
The height of each bar represents the standardized change in the probability of administering chemotherapy after the ASP payment system took effect, relative to the change in South Carolina. T bars indicate the upper limit of the 95% confidence interval for this change. South Carolina was chosen as the reference category because its (unadjusted) change is roughly equal to the national change; its adjusted change is 0.017. We adjusted for patient age and its square, sex, and race; the Deyo–Charlson comorbidity score; metastases; and calendar month when treatment was initiated. Standard errors are adjusted to allow for an arbitrary covariance structure at the state level. The F value for the null hypothesis that the state changes are jointly equal to zero is 38279, meaning that we can reject the null hypothesis at any standard level of significance.
See this image and copyright information in PMC

References

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