EMPIRICAL RESULTS
3.1. Descriptive statistics
Analysing the insurance portfolio structure, it can be noticed that the maximum frequency of declared accidents or claims by a policyholderis 5. More specifically, throughout the analysed period, 131838 (87.88%) of policyholders did not declare any accident, 15395 (10.26%) of policyholders declared one claim, 2202 (1.47%) of them informed the insurance company of the occurrence of two accidents, 442 (0.29%) of policyholders had three claims declared, 100 (0.07%) policyholders with four claims and only 44 (0.03%) of them declared to the company five claims. The distribution of the claim frequency suggests that the portfolio is heterogeneous, an aspect that can be easily deduced from the results shown in Table 2.