Table 4 Urinalysis with Microscopy (81001, Urine Test) (t stats are reported in parentheses using robust standard errors)

Independent variables

 Total Number of Hospital Beds (100 s)

−0.017***

32.114***

−0.009

32.204***

0.122

(-3.07)

(25.74)

(-1.38)

(25.66)

(1.64)

 Medical Lab Employment (100 s)

-

-

−0.024***

-

−0.432*

-

-

(-3.37)

-

(1.88)

 Population Density (1,000 s per Square Mile)

0.045

7.659*

0.047

7.942*

0.078*

(1.38)

(1.70)

(1.44)

(1.77)

(1.88)

 Area (1,000 s of Square Miles)

0.075***

−18.726***

0.071**

18.258***

−0.006

(2.57)

(-13.18)

(2.46)

(-12.52)

(-0.12)

 Average Hospital Size (100 s of Beds)

−0.294**

−63.089***

−0.309**

−6.050***

−0.568***

(-2.03)

(-6.18)

(-2.16)

(-5.79)

(-2.68)

 Lab Technician Licensing Laws

-

-

-

−63.36***

-

-

-

-

(-3.53)

-

Demographic Controls^a

YES

YES

YES

YES

YES

Year Trend

YES

NO

YES

YES

YES

Region Fixed Effect

YES

YES

YES

YES

YES

Year Trend × Region Fixed Effect

YES

NO

YES

YES

YES

No. of Observations

6309

6326

6309

6309

6309

R-squared

0.038

0.518

0.039

0.514

-

Root MSE

8.212

457.170

8.212

457.231

8.379

First-stage F-statistics

-

-

-

Wooldridge Robust Score Test

-

-

-