A nationally representative sample of 12,280 physicians was selected to investigate physician practices in 60 randomly selected communities. Multivariate analyses demonstrate that the more the physicians accept Medicare managed care patients, private or commercial insurance plans including...

Using chemical substances for self-medication may be regarded not simply as free choice but as the result of complex behaviours involving social, environmental, and economic contexts, and even as an attempt to cope with life. The objective of this study was to determine the possibility of...