This study reports an examination of the relationships between Porter's (1980) generic strategies, dynamic environments, and performance. In the study, profile deviation is used to test strategy-environment fit. A sample of 173 acute care hospitals was used to test the proposed relationship. Results from the study indicate that adherence to an externally specified ideal strategy profile has a positive effect on firm performance. From a methodological standpoint, results suggest that empirical and theoretical profiles have equal predictive validity, and both have a higher predictive validity, than a random profile. Results also suggest that profiles can not be assumed to be robust to differences in performance measures used.