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Table 1 Fixed effect (within variation) model: Impact of RAS systems and certifications on procedure volume growth

From: Robotic-assisted surgery for prostatectomy – does the diffusion of robotic systems contribute to treatment centralization and influence patients’ hospital choice?

Dependent variable: ln (RPE procedure volume) – time horizon: 2006—2018

 

Hospitals with starting1 RPE procedure volume of:

 

(A-1) All hospitals

(A-2) 50 or lower

(A-3) 51–150

(A-4) 151–300

(A-5) above 300

Effects

Coeff

SE

Coeff

SE

Coeff

SE

Coeff

SE

Coeff

SE

RAS system

0.598

0.047***

1.022

0.103***

0.459

0.049***

0.462

0.068***

0.300

0.217

Prostate cancer treatment center

0.235

0.058***

0.446

0.125***

0.276

0.058***

0.046

0.075

0.338

0.405

Hospital size—number of beds

0.000

0.000

0.000

0.000

0.000

0.000

0.000

0.000

0.002

0.001*

Control variables—years

 2008

0.105

0.041*

0.296

0.068***

-0.063

0.047

-0.130

0.072

0.020

0.240

 2010

-0.082

0.041*

0.151

0.068*

-0.292

0.048***

-0.313

0.074***

-0.203

0.254

 2012

-0.212

0.041***

0.073

0.068

-0.506

0.049***

-0.493

0.074***

-0.001

0.276

 2013

-0.440

0.042***

-0.193

0.069**

-0.695

0.049***

-0.709

0.078***

0.019

0.281

 2014

-0.548

0.042***

-0.286

0.069***

-0.836

0.049***

-0.828

0.080***

0.026

0.285

 2015

-0.552

0.042***

-0.273

0.070***

-0.864

0.050***

-0.856

0.080***

0.035

0.281

 2016

-0.574

0.043***

-0.350

0.070***

-0.847

0.051***

-0.741

0.081***

0.066

0.281

 2017

-0.594

0.043***

-0.379

0.071***

-0.870

0.051***

-0.708

0.083***

0.122

0.291

 2018

-0.528

0.046***

-0.245

0.076**

-0.869

0.052***

-0.770

0.084***

0.165

0.291

 Constant

3.474

0.104***

2.608

0.150***

4.270

0130***

5.506

0.240***

2.848

1.057**

Impact on RPE procedure volume2 of:

 RAS system

 + 82%

 

 + 178%

 

 + 58%

 

 + 59%

 

 + 35%3

 

 Prostate cancer treatment center

 + 27%

 

 + 56%

 

 + 32%

 

 + 5%3

 + 40%3

 

Number of observations

4,048

 

2,138

 

1,496

 

299

 

115

 

Number of hospitals4

607

 

373

 

180

 

35

 

19

 

Prob > F

0.000

 

0.000

 

0.000

 

0.000

 

0.355

 

R2 (within)

0.1618

 

0.1315

 

0.3656

 

0.4792

 

0.1380

 
  1. Coeff Estimation coefficient, SE Standard Error, 1. Hospitals are categorized by their annual procedure volume of radical prostatectomies the year they appear the first time in the database; 2. The impact of one of the variables on RPE procedure volume is transformed into percentage changes by the use of (ecoef - 1) * 100%; 3. Impact is not statistically significant; 4. Number of hospitals includes all hospitals having performed RPE procedure between 2006 and 2018, and can therefore deviate from the number of hospitals performing RPE procedures in a single year
  2. *** p < 0.001
  3. ** p < 0.01
  4. * p < 0.05
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Health Economics Review

ISSN: 2191-1991

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