(1a)

(1b)

(1c)

(1d)

OLS

TOBIT

Mis

−0.053***

(0.0163)

−0.0739***

(0.0278)

−0.0541***

(0.0171)

−0.0682***

(0.0229)

K/L

1.61E−05**

(6.74E−06)

5.78E−05***

(1.08E−05)

2.69E−05***

(8.93E−06)

0.00005***

(9.04E−06)

Hc

2.27E−07***

(5.92e−08)

2.42E−07***

(9.42E−08)

3.19E−07***

(7.72E−08)

2.83E−07***

(7.91E−08)

Scale

−0.007***

(0.0027)

−0.0085**

(0.0042)

−0.0069***

(0.0026)

−0.0079**

(0.0036)

Age

−0.0124***

(0.0025)

−0.0170***

(0.0040)

−0.0116***

(0.0025)

−0.0168***

(0.0034)

Sback

3.4426

(3.0433)

10.1452**

(5.1576)

3.9237

(3.1747)

7.4978**

(4.2524)

Herf

0.0668

(0.0569)

0.0511

(0.0961)

0.0628

(0.0594)

0.0670

(0.0793)

FD

0.0004

(0.0003)

0.0006

(0.0005)

0.0004

(0.0003)

0.0005

(0.0004)

_cons

0.5713***

(0.0372)

0.6444***

(0.0602)

0.5578***

(0.0379)

0.6341***

(0.0504)

sigma_u

0.1701

0.3009

0.1814

0.244564

sigma_e

0.1817

0.2811

0.1788

0.2367

Rho

0.4669

0.5340

0.5073

0.5163