Determinants of output in group and solo medical practice.

Certain structural and environmental factors other than technical combination of resources and firm size are hypothesized to affect medical practice output. Four groups of variables related to physician attributes and activities, practice organization and patient characteristics, community characteristics, and factors specific to medical groups are examined by regression for correlation with two measures of practice output: gross revenue and total patient visits. Some tentative conclusions are discussed in relation to policies that might increase practice output.