Palgrave Handbook of Econometrics: Applied Econometrics

618

Table 12.3

Continued

Study

Outcome

Treatment

Treated/controls

Comments

Marini

et al

. (2008)

Retained surplus/deficit andReference Cost Index (RCI)

Introduction of FoundationTrusts in England in 2004

Foundation Trusts/threecomparator groups: allhospitals in rest of England;a matched control group; allhospitals eligible forFoundation status

Difference in differencescombined with PSM. Theresults show a small increasein surplus and a smalldecrease in the RCI withinFoundation Trusts

Propper

et al

.

(2002)

Waiting times for hospitaladmissions in England(North West Anglia region)

GP fundholding

Fundholders’patients/non-fundholders’patients

Effects on waiting onlyapplied to a limited set ofpatients and of procedures

Schmidt (2007)

Infertility (first birth rates)

Infertility insurancemandates in US states

Uses interaction betweentime, whether states have amandate and age of women(over 35)

Uses DDD estimates. Findsthat mandates significantlyincrease birth rates forwomen over 35

Wagstaff and Yu(2007)

Use of services, catastrophicexpenses, health outcomes

World Bank’s Health VIIIproject, Gansu province,China

Project/non-project counties

DD combined with PSM

Winkelmann(2004a)

Doctor visits

Increase in co-payments forprescription drugs

Non-exempt/exempt

Wolfe

et al

. (2006)

Public health care coverageof “welfare leavers”

Wisconsin BadgerCareProgram (expanded publichealth insurance eligibility)

(i) Between cohort strategy:1997 cohort/1995 cohort ofleavers(ii) Within cohorts: newlyeligible/continuouslyeligible

DD estimates suggest thatBadgerCare increased publiccoverage by 17–25percentage points