Comprehensive Medial Insurance - Statistical Analysis for Ratemaking [Discussion]

Mr. Bevan has presented a paper on a subject where it is unlikely that we will ever be surfeited with data. Every study of comprehensive medical insurance reveals some new fact, sometimes difficult to reconcile with previous experience. The ratemaking problem is thus a matter of grappling with these disparities using as many sources of information as are available to the actuary. Mr. Bevan's contribution is a significant addition to our sources. The approach taken by Mr. Bevan is constructive, giving us a model statistical plan to follow in generating internal data. Bearing in mind the ever-present difficulty of obtaining accurate exposure data for group health insurance contracts and the extent to which contracts are tailor-made to each insured's demands, we are forced to the approach of analyzing a single case at a time. Only certain segments of the experience of several cases can subsequently be combined in a meaningful manner.