From: The impact of agglomeration economies on hospital input prices
Type of intermediate medical service (CPT code) | General health panel (80050) | Electrolyte panel (80051) | Lipid panel (80061) | Hepatic function panel (80076) |
---|---|---|---|---|
 | (1) | (2) | (3) | (4) |
Total Number of Hospital Beds (100Â s) | 3.179*** | 0.541*** | 0.804*** | 0.567*** |
 | (3.22) | (2.75) | (2.86) | (2.75) |
Medical Lab Employment (100 s) | −1.078*** | −1.830*** | −2.663*** | −1.900*** |
 | (-3.26) | (-2.97) | (-3.02) | (-2.95) |
Population Density (1,000Â s per Square Mile) | 0.621 | 0.275** | 0.434*** | 0.290*** |
 | (1.21) | (2.43) | (3.14) | (2.70) |
Area (1,000 s of Square Miles) | −1.173* | −0.139 | −0.191 | −0.075 |
 | (-1.93) | (-1.12) | (-1.11) | (-0.57) |
Average Hospital Size (100 s of Beds) | −6.315*** | −1.273** | −2.104*** | −1.446*** |
 | (-2.58) | (-2.44) | (-3.06) | (-2.87) |
Demographic Controlsa | YES | YES | YES | YES |
Year Trend | YES | YES | YES | YES |
Region FE | YES | YES | YES | YES |
Year Trend × Region FE | YES | YES | YES | YES |
No. of Observations | 6297 | 5873 | 6373 | 6304 |
Root MSE | 49.981 | 11.043 | 15.063 | 10.801 |
First-stage F-statistics | 12.474 | 13.471 | 12.270 | 11.973 |
Wooldridge Robust Score Test | 65.901 | 20.759 | 25.741 | 22.299 |