Table 3 Results from regressing estimated 30% co-payment rate dummy coefficients from Eq.(1) on price difference

Price Difference (per 100JPY)

0.014^a (0.0072)

0.010^a (0.0062)

−0.0020 (0.0082)

−0.0018 (0.0079)

0.029^b (0.012)

0.023^b (0.010)

0.031^b (0.013)

0.022^b (0.011)

Constant

−0.039^b (0.0077)

−0.034^b (0.0060)

− 0.030^b (0.013)

−0.030^b (0.012)

− 0.047^b (0.0098)

−0.039^b (0.0075)

− 0.031^b (0.013)

−0.023^b (0.010)

ATC Categories

Cardiovascular System

–

–

–

–

–

–

ref

ref

Alimentary Tract and Metabolism

–

–

–

–

–

–

−0.0059 (0.015)

−0.014 (0.012)

Nervous System

–

–

–

–

–

–

−0.059^b (0.023)

−0.057^b (0.020)

Others

–

–

–

–

–

–

−0.023 (0.022)

−0.014 (0.017)

Observations

311

311

59

59

252

252

252

252