Variable

(1)

eastern area

(2)

central area

(3)

western area

lnDFI

0.134***

0.133***

0.153***

(0.0257)

(0.0149)

(0.0120)

INS

0.627***

−0.284

0.434***

(0.147)

(0.318)

(0.134)

INL

0.0256***

0.0186***

0.0141***

(0.0051)

(0.0044)

(0.0030)

RDI

0.0009

0.0621**

0.0480

(0.0160)

(0.0243)

(0.0370)

DFT

0.644***

0.0391

0.108

(0.101)

(0.564)

(0.261)

RND

0.0148

0.507**

0.924***

(0.226)

(0.201)

(0.142)

Constant

10.03***

9.500***

8.687***

(0.306)

(0.343)

(0.155)

Observations

110

80

110

R-squared

0.884

0.916

0.914