Has Competition in the Japanese Banking Sector Improved?



which were extracted from the Nikkei NEEDS Macro Data File. The list of the data used
for each variable is:

Ri,t : loan interest revenue for bank i at time t,
qi,t : outstanding balances of loan for bank i at time t ,
Qt : sum of qi,t over city banks or regional banks at time t ,
di,t : outstanding balances of deposit for bank i at time t ,
Ci,t : operating costs for bank i at time t ,
rid,t = (interest paid for deposit) / (total amounts of deposit) for bank i at time t ,
wi,t = (personnel expenses + welfare expenses) / (the number of employees) for bank i at
time
t ,

Rit

Pi t ,- : loan interest rates for bank i at time t,

qi,t

ASLi,t = qi,t / (the number of loans for bank i at time t),

SMSFi,t(the amount of loans to small- and medium-sized firms) / qi,t ,

OPLi,t(the amount of loans for operation funds) / (the amount of loans for operation
funds + that for equipment funds) for bank
i at time t ,

IIPt : index of industrial production at time t .

The estimation period is from fiscal 1974 to fiscal 2000. After excluding
observations that lack some data, the number of observations each year is 9-13 for city
banks and 116-131 for regional banks. The total number of observations is 318 for city
trust banks, regional banks, shinkin banks, and credit cooperatives.

10



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