Economic

  • November 2019
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Economic Effect

SG-2 Technical Brief

Assumptions 1. Studies show a 25% reduction in utilization (inpatient) with an increase in unemployment. Effect is indirect via loss of employment determined health insurance benefits. 2. The effect is probably "across-the-board" – e.g. even non-discretionary utilization is affected. The only exception is probably acute, trauma-related care. 3. By corollary, does utilization increase by 25% if unemployment declines? Probably by not as much.

Approach: 1. Get change in unemployment forecasts from Bureau of Labor Statistics and SG-2 analysis. Need. This is δ. Increasing unemployment is a positive number; while decreasing unemployment is a negative number. 2. The "utilization depressor" is µ. Usually set to -0.25 3. The "negative bias factor" is κ. Default is 25. Using this in an exponential accentuates the change on the positive (or increasing unemployment) side.

∆ = δ • µ • e (κ • δ ) Current Defaults:

The Impact of Change™

δ: Our current national set looks as follows:

Eastern Mass, SSM/Cent. Missouri and ANOVA were all run with these national numbers. Unemployment Curve Chart

"Change in unemployment" Impact

.02

.015

.01

.005

.

-.005

-.01 2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

Year

The Impact of Change™

∆: Applying the above equation (with defaults for κ and µ) to the national δ's, we get the following results:



δ

Year 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

No kappa .0042 .0167 -.002 -.004 -.002 0 0 -.004 -.001 -.001

(with Kappa

-0.00105 -0.00417 0.0005 0.001 0.0005 0 0 0.001 0.00025 0.00025

-0.00117 -0.00634 0.000476 0.000905 0.000476 0 0 0.000905 0.000244 0.000244

"Delta" Chart ∆ 0.02

Pure

0.015

Kappa No Kappa 0.01

0.005

0

-0.005

-0.01 2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

Year

These ∆ 's are the "changes in rate" that will be applied to the utilization volumes (non-Medicare component – see below).

The Impact of Change™

Implementation: These "rates" are then integrated and applied to the non-Medicare component (for DRGs) or total (for OPCs) utilization volumes. Currently the Medicare fractions are "hard-coded" (non time & space dependent) into the core DRG table. Example of DRG Medicare fractions: DRG

DRG Description

Medicare Fraction

1.00 Craniotomy >17 X Trauma

0.3429158

1.10 Craniotomy >17 X Trauma

0.3429158

2.00 Craniotomy For Trauma >17

0.5328467

2.10 Craniotomy For Trauma >17

0.5328467

3.00 Craniotomy Age 0-17

0

3.10 Craniotomy Age 0-17

0

4.00 Spinal Proc

0.1917476

4.10 Spinal Proc

0.1917476

The rates can be applied to: 1. initial utilization volumes or 2. "nonlinearly" multiplied against population-driven utilization.

Treatment of Medicare Fractions There are two sources for medicare fraction: (1) "Hard-coded"in the DRG tables directly or (2) derived directly from the age-group identifier of the relevant dataset. E.g. If the age group is greater than 65 then the medicare fraction is 1; other wise it is zero. If the age grouping spans 65 then the medicare fraction is some number between 0 and 1 – appropriately weighted at the time that the age group designation is defined. The default is to use option (2); if option (2) does not yield a medicare fraction (e.g. for undefined or global age group designations) then option (1) will be applied. Option (2) also allows for the medicare fraction to change over time as the proportion of the population over 65 likewise changes.

The Impact of Change™

Results: National data; linear run. Using κ, m defaults Economic Population

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

157,348

157,170

156,203

156,244

156,383

156,460

156,462

156,462

156,599

156,640

156,679

157,348

161,549

166,054

170,891

176,088

181,679

187,701

194,194

201,204

208,782

216,987

-0.4% 37.9%

Population / Economic "Wedge" NHDS National 2000 - 2010 SG-2 Forecast Economic Population

250 200 150 100 50

0 2000 2001 2002 2003 2004 2005 2006 2007

2008

2009

2010

Economic Effect Detail 157,600 157,400 157,200 157,000 156,800 156,600 156,400 156,200 156,000 155,800 155,600 2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

The Impact of Change™

The Impact of Change™

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