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THE IMPACT OF GLOBAL BUDGETING ON TREATMENT OUTCOMES. Kanhom Kan Shu -Fen Li Wei- Der Tsai. Objective of this study Investigate the impact of global budgeting on treatment outcome. Motivation:

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slide2

Objective of this study

  • Investigate the impact of global budgeting on treatment outcome.
  • Motivation:

1. The rapid increase in health care expenditure since the 1960s has become a great concern to policy makers in most developed countries.

  • Global Budgeting is effective in controlling medical expenditures and it was adopted in OECD countries (see Docteur and Oxley, 2004, and Wolfe and Moran, 1993).
slide3

Figure 1 Comparison of per capita NHE between OECD Countries and Taiwan

  • Data Source:OECD Health Data 2009
literature review
Literature Review
  • Most relative research focus on the provider’s behavior responses (quantity and quality) to global budgeting:

A. Theoretical Prediction:

  • Phelps (1997) and Fan, et al. (1998) show that medical service providers will increase the quantity of services supplied.

2. Benstetter and Wambach’s (2006) suggest that there is likely to be a coordination failure such that medical service providers will supply a high quantity of services in order to achieve a target income and prevent bankruptcy (the so-called “treadmill effect”).

literature review cont
Literature Review (Cont)
  • Theoretical Predictions:
  • Based on the assumption of monopolist and Cournot competitive market, Mougeot and Naegelen (2005) suggest that compared with FFS, an expenditure cap results in a lower level of service quantity and quality.

4. Feldman and Lobo’s (1997) assume that medical service providers’ utility is a function of services quantity and quality. Their model indicates that the excess demand which is prevalence under global budget systems is due to the high level of resource intensity chosen by service providers.

literature review cont1
Literature Review (Cont)

B. Empirical Evidence:

  • Rochaix (1993) show in response to an expenditure cap, physicians in Québec increase their activity levels, and provide more complex and high-priced procedures.
  • Similar results found by Hurley et al. (1997) [cases of Alberta and Scotia Nova in Canada] and Lee and Jones (2004) [case of Taiwan’s dentists].

3. Chen et al. (2007) and Cheng, et al. (2009) show that hospitals in Taiwan are more likely to hospitalize patients under global budgeting.

slide8
The literature is silent on the issue that whether the implement of global budgeting has an impact on quality or treatment outcome.

Using the data of Taiwan’s National Health Insurance claim records in 1998-2007, we examine the effect of global budgeting on treatment outcomes of AMI (acute myocardial infraction), ischemic stroke and hemorrhagic stroke patients.

The treatment outcome is measured by inpatient readmission within 30 days, and the rate of 7, 14, 30, 60 and 90 days post-discharge mortality.

background of taiwan s nhi
Background of Taiwan’s NHI
  • National Health Insurance (NHI) was implemented in March of 1995.
  • NHI provides patients with comprehensive care, but only requests low out of pocket expenditures.
  • Payment system started from FFS in 1995, but changed to global budget system sector by sector.

1998/7 Dental services

2000/7 Chinese Medicine

2001/7 Community clinics in 2001

2002/7 Hospital services

2010/1 DRG for hospital inpatient services.

background of taiwan s nhi cont
Background of Taiwan’s NHI (cont)
  • Under FFS, a providers is credited a certain point for each treatment procedure offered and each point is worth NT$ 1.
  • Under global budgeting system, there is a regional level expenditure cap. Taiwan was divided into six medical regions. The point value for a given region is determined as follows
data description
Data Description
  • Claim record form the 1998-2007 Claim File of Taiwan’s NHI.
  • The claim record contain information both on hospitalized patients’ and hospitals’ characteristics.
  • We use the claim data to construct three samples, including AMI (acute myocardial infraction, ICD 410), ischemic stroke ( ICD 434) and hemorrhagic stroke (ICD 430 & 431)patients.
data description1
Data Description
  • Some criteria are imposed to exclude observations.
  • admitted to hospitals due to same ICD code in previous year;
  • hospitalized for more than 30 days;
  • admitted to a hospital, which treated less than 300 cases in the past 10 year;
  • younger than 30 or older than 80.
  • hospitalized during June, July and August of 2002.

There are total 63,142, 238,810 and 99,907 patients, respectively, for AMI, Ischemic stroke and hemorrhagic stroke in 1998-2007.

empirical strategy
Empirical Strategy
  • Linear probability model:

Where subscribe d index calendar dates, h andiindex, respectively, the hospital and the patient;

yhid an outcome of interest;

GBd global budgeting indicator;

trendd year trend,

Xhid a vector of patient characteristics

(i.e., CCI score, age, gender);

ηh hospital fixed effect;

εhidresiduals.

empirical strategy cont
Empirical Strategy (cont)
  • To have a preliminary examination of the effect of GB on patient outcome, we first estimate a fixed effects model without GBd:
  • We employ a nonparametric smoothing method, call local polynomial (Fan and Gijbels, 1996), to display the predicted residual

Where g = 0, 1 indicating the pre- and post-global budgeting periods.

empirical strategy cont1
Empirical Strategy (cont)
  • The graphs indicate that the pattern of the time trend is the residuals before and after the implementation of GB are different.
  • To incorporate the effect of time on the readmission and mortality of AMI and stroke patients, we estimate the following specification model
conclusion
Conclusion
  • Our estimation results suggest that global budgeting has some effects on post-discharge readmission and mortality for for-profit hospitals.
  • Our empirical results suggest that global budgeting leads to an improvement in treatment outcomes for for-profit hospitals. For AMI patients, GB reduces post-discharge readmission by 1.67%, and 7 and 14 days post-discharge mortality by approximately 2%. For hemorrhagic stroke patients, GB reduces the 14, 30 and 60 days post-discharge mortality by 0.0195-0.0233.