Table 6: OLS regression for medical cost per head injury in a motorcycle accident.

VariableCoefficientaStandard error value

Intercept 9.49096***0.06281<0.0001

Policy interactions
 Policy*Center−0.26555*0.160260.0978
 Policy*South−0.104640.128790.4166
 Policy*East0.261610.409850.5234

Geographic locations
 Center−0.000960.128290.9940
 South−0.065480.097990.5042
 East−0.307020.330840.3536
 (ref.: north)

Gender0.13557**0.052930.0106

Age
 Children−0.32607**0.149530.0294
 Adult 15–24−0.21468***0.055130.0001
 Elderly−0.106880.109410.3288
 (ref.: adult 25–64)

Rural/urban
 City−0.029040.121420.8110
 County administered−0.115220.089240.1969
 Town−0.014800.087230.8653
 Village0.005830.085190.9454
 (ref.: special municipality)

a***Denotes significant at 0.01 level; **denotes significant at 0.05 level; *denotes significant at 0.1 level.
bReference groups: north, Female, adult 25–64, special municipality, Policy*North.
AdjR2 = 0.0211.
Observations = 1,254.