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Buntin MB, Escarce J, Goldman D, et al. Determinants of Increases in Medicare Expenditures for Physicians' Services. Rockville (MD): Agency for Healthcare Research and Quality (US); 2003 Oct. (Technical Reviews, No. 7.)

Cover of Determinants of Increases in Medicare Expenditures for Physicians' Services

Determinants of Increases in Medicare Expenditures for Physicians' Services.

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Appendix B1993 OLS Model Estimation Results

Dependent Variable: 1993 RVUs; Mean = 38.1CoefficientRobust Standard Error
65–69 years4.323.63
70–74 years8.84*3.89
75–79 years8.21**4.38
80–84 years0.103.49
85+ years-1.416.22
Male2.684.48
65–69 & male1.395.24
70–74 & male-2.095.51
75–79 & male3.196.37
80–84 & male10.67**5.87
85+ & male0.157.94
> High school education4.02**2.36
Medicaid17.80*4.13
Private supplement15.49*2.16
Drug coverage-1.162.10
Urban residence8.45*1.85
Midwest-0.633.01
South-4.59*2.24
West-1.842.78
Other-4.074.47
1–2 ADLs0.402.77
3+ ADLs6.024.52
1–2 IADLs15.09*2.81
3+ IADL21.80*4.37
Ever smoked1.321.87
Hardening of the arteries4.533.18
Hypertension3.97*1.69
Myocardial infarction12.11*4.00
Angina pectoris/CHD5.203.35
Other heart condition7.45*2.41
Stroke/brain hemorrhage-6.93*3.13
Other cancer (not listed below)9.94*4.55
Skin cancer5.52*2.26
Lung cancer56.95*19.33
Colon cancer19.55*6.33
Breast cancer13.99*7.02
Prostate cancer25.49*6.70
Diabetes8.13*2.56
Arthritis3.52**1.98
Alzheimer's-7.576.00
Mental disorder2.413.18
Osteoporosis-3.513.38
Broken hip12.989.51
Parkinson's-5.454.69
Emphysema, asthma, COPD1.512.43
Decedent43.75*8.05
Constant-11.45*4.77
Number of observations 9,627
R2 = 0.0684
*

significant at p< 0.0.5

**

significant at p< 0.10

OLS = ordinary least squares.

ADLs = activities of daily living.

IADLs = instrumental activities of daily living.

CHD = chronic heart disease.

COPD = chronic obstructive pulmonary disease.

Note: Omitted categories are <65 years, <65 years and male, Northeast region, zero ADLs, zero IADLs, and no self-reported conditions.

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