Assessing the equality of means of healthcare costs

Expert Review of Pharmacoeconomics and Outcomes Research

Volumn 3, Issue 5, 2003, Pages 561-567

  Zhou, Xiao Hua Andrew ^a,b   Ramsey, Scott ^a,c  

^a UNIVERSITY OF WASHINGTON   (United States)

^b Development Center of Excellence   (United States)

^c Fred Hutchinson Cancer Research Center   (United States)

Author keywords

Assessment; Cost data; Equality; Healthcare; Means

Indexed keywords

ANALYTIC METHOD; COST BENEFIT ANALYSIS; COST EFFECTIVENESS ANALYSIS; DATA ANALYSIS; HEALTH CARE COST; HEALTH CARE PLANNING; HEALTH CARE POLICY; LINEAR SYSTEM; MEDICAID; MEDICAL CARE; OUTPATIENT CARE; POPULATION RESEARCH; RANK SUM TEST; REGRESSION ANALYSIS; REVIEW; STATISTICAL ANALYSIS; STATISTICAL MODEL;

EID: 0142248285     PISSN: 14737167     EISSN: None     Source Type: Journal    
DOI: 10.1586/14737167.3.5.561     Document Type: Review

References (25)

1. Lumley T, Diehr P, Emerson S, Chen L. The importance of the normality assumption in large public health data sets. Ann. Rev. Pub. Health 23, 151-169 (2002).
2. Zhou XH, Melfi CA, Hui SL. Methods for comparison of cost data. Ann. Intern. Med. 127, 752-756(1997).
3. Zhou XH, Gao S, Hui SL. Methods for comparing the means of two independent log-normal populations. Biometrics 53, 1129-1135 (1997).
4. Tu W, Zhou XH. A Wald test comparing medical costs based on log-normal distributions with zero valued costs. Stat. Med. 18, 2749-2761 (1999).
5. Zhou XH, Tu W. Comparison of several independent population means when their samples contain log-normal and possibly zero observations. Biometrics 55, 645-651 (1999).
6. Zhou XH, Li C, Gao S, Tierney WM. Methods for comparing means of healthcare costs in a paired design study, Stat. Med. 20, 1703-1720 (2001).
7. Duan N, Manning WG Jr, Morris CN, Newhouse JP. a comparison of alternative models for the demand for medical care. J. Business Econ. Stat. 1, 115-126 (1983).
8. Hay JW, Olsen RJ. Let them eat cake: a note on comparing alternative models of the demand for medical care. J. Business Econ. Stat. 2,279-282 (1984).
9. Halvorsen R, Palmquist R. The interpretation of dummy variables in semilogarithmic equations. Am. Econ. Rev. 70, 474-476 (1980).
10. Guijarati, D. Basic Econometric. McGraw-Hill, NY, USA (1995).
11. Duan N. Smearing estimate: a nonparametric retransformation method. J. Am. Stat. Assoc. 78, 605-610 (1983).
12. Manning WG. The logged dependent variable, heteroscedasticity and the retransformation problem. J. Health Econ. 17, 283-295 (1998).
13. Mullahy J. Much ado about two: reconsidering retransformation and the two-part model in health econometrics. J. Health Econ. 17, 247-281 (1998).
14. Zhou XH, Stroupe KT, Tierney WM. Regression analysis of healthcare charges with heterosdesticity. J. Royal Stat. Soc. Series C 50, 303-312 (2001).
15. Welsh AH, Zhou XH. Estimating the retransformed mean in a heteroscedastic two-part model. (Submitted).
16. Blough DK, Ramsey SD. Using generalized linear models to assess medical care costs. Health Serv. Outcomes Res. Methodology 1, 185-202 (2000).
17. Manning WG, Mullahy J. Estimating log models: to transform or not to transform? J. Health Econ. 20(4), 461-494 (2001).
18. Diehr P, Yanez D, Ash A, Hornbrook M, Lin DY. Methods for analyzing healthcare utilization and costs. Ann. Rev. 20, 125-144 (1999).
19. Zhou XH, Gao S. Confidence intervals for the lognormal mean. Stat. Med. 16, 783-790 (1997).
20. Taylor DJ, Kupper LL, Muller KE. Improved approximate confidence interval for the mean of a log-normal random variable. Stat. Med. 26, 1443-1459 (2001).
21. Tu W, Zhou XH. Pairwise comparisons of the means of skewed data. J. Stat. Plan. Inference 88, 59-74 (2000).
22. Bang H, Tsiatis AA. Estimating medical costs with censored data. Biometrika 87, 329-343(2000).
23. Lin DY. Linear regression analysis of censored medical costs. Biostatistics 1, 35-47 (2000).
24. Lin DY. Proportional means regression for censored cost data. Biometrics 56, 775-778 (2000).
25. Jiang H, Zhou XH. Bootstrap confidence intervals for medical costs with censored data. Stat. Med. (In Press) (2003).