Medical evaluation of work-related illness: evaluations by a treating occupational medicine specialist and by independent medical examiners compared.

Treating physicians' and independent medical examiners' (IMEs') opinions were compared to identify differences of opinion and to develop a basis for understanding the differences. Twenty-three patients of an occupational health center (OHC) who had been examined by an IME were studied. OHC and IME opinions regarding diagnosis, work-relatedness, treatment recommendations, and disability assessment were categorized by degree of agreement. There was agreement on all four issues for only one patient. Opinions were most divergent with regard to disability assessment and least divergent with regard to diagnosis. Disagreement was unidirectional: the IMEs made fewer diagnoses, deemed fewer illnesses work-related, made fewer treatment recommendations, and assessed lower levels of disability than the OHC examiners. The results suggest that differences in opinion between the OHC and IMEs are due to differences in perspective, rather than skill or training.