Appendix 2. The data
The data refer to the larger part of those banks which belong to the sample producing quarterly
information for the Central Credit Register on deposit interest rates. Tha data set have been arranged
considering the individual code of each bank and the province where it is active. Outliers have been
corrected or erased.
The data set on total deposit interest rates refers to the years 1990-99 and contains 10561
observations. The data set on current accounts contains, for the period 1990-96, 8237 observations. The
data set on certificates of deposit includes, for the period 1990-96, 8.017 observations. The data set on
savings accounts includes 8248 observations.
The dependent variables are the different interest rates for the categories of deposits. Independent
variables include the provincial Herfindahl indices and the concentration ratios R3 for the different
categories of deposits; these indicators have been built considering all the Italian banks except for the
mutual banks. The data set also consider the number of banks and branches per province; the costs/assets
ratio and the staff costs per employee for each bank; the growth rate of deposits in each province.
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