1. Hunt SA, Baker DW, Chin MH, et al. ACC/AHA guidelines for the evaluation and management of chronic heart failure in the adult: A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Revise the 1995 Guidelines for the Evaluation and Management of Heart Failure). J Am Coll Cardiol 2001; 38: 2101–2113.
2. U.S. Department of Health and Human Services. Health Care Financing Review: Statistical Supplement. Bethesda, MD, U.S. Department of Health and Human Services, 1995, p 56.
3. Ho KK, Anderson KM, Kannel WB, et al. Survival after the onset of congestive heart failure in Framingham Heart Study subjects. Circulation 1993; 88: 107–115.
4. Krumholz HM, Parent EM, Tu N, et al. Readmission after hospitalization for congestive heart failure among Medicare beneficiaries. Arch Intern Med 1997; 157: 99–104.
5. Vinson JM, Rich MW, Sperry JC, et al. Early readmission of elderly patients with congestive heart failure. J Am Geriatr Soc 1990; 38: 1290–1295.
6. Berry C, McMurray J. A review of quality-of-life evaluations in patients with congestive heart failure. Pharmacoeconomics 1999; 16: 247–271.
7. Jenkinson C, Jenkinson D, Shepperd S, et al. Evaluation of treatment for congestive heart failure in patients aged 60 years and older using generic measures of healthy status (SF-36 and COOP charts). Age Ageing 1997; 26: 7–13.
8. Rector TS, Kubo SH, Cohn JN. Patients’ self-assessment of their congestive heart failure: Part 2—Content, reliability and validity of a new measure: The Minnesota Living with Heart Failure questionnaire. Heart Failure 1987; 3: 198–209.
9. Feinstein AR, Fisher MB, Pigeon JG. Changes in dyspnea-fatigue ratings as indicators of quality of life in the treatment of congestive heart failure. Am J Cardiol 1989; 64: 50–55.
10. Guyatt GH, Nogradi S, Halcrow S, et al. Development and testing of a new measure of health status for clinical trials in heart failure. J Gen Intern Med 1998; 4: 101–107.
11. Jaeschke R, Singer J, Guyatt GH. Measurement of health status: Ascertaining the minimal clinically important difference. Control Clin Trials 1989; 10: 407–415.
12. Wiklund I, Lindvall K, Swedberg K, et al. Self-assessment of quality of life in severe heart failure: An instrument for clinical use. Scand J Psychol 1987; 28: 220–225.
13. Havranek EP, McGovern KM, Weinberger J, et al. Patient preferences for heart failure treatment: Utilities are valid measures of health-related quality of life in heart failure. J Card Fail 1999; 5: 85–91.
14. Wyrwich KW, Nienaber NA, Tierney WM, et al. Linking clinical relevance and statistical significance in evaluating intra-individual changes in health-related quality of life. Med Care 1999; 37: 469–478.
15. O'Keeffe ST, Lye M, Donnellan C, et al. Reproducibility and responsiveness of quality of life assessment and six minute walk test in elderly heart failure patients. Heart 1998; 80: 377–382.
16. Green CP, Porter CB, Bresnahan DR, et al. Development and evaluation of the Kansas City Cardiomyopathy Questionnaire: A new health status measure of heart failure. J Am Coll Cardiol 2000; 35: 1245–1255.
17. Leidy NK, Rentz AM, Zycynski TM. Evaluating health-related quality-of-life outcomes in patients with congestive heart failure: A review of recent randomized controlled trials. Pharmacoeconomics 1999; 15: 19–46.
18. Rogers WJ, Johnstone DE, Yusuf S, et al. Quality of life among 5,025 patients with left ventricular dysfunction randomized between placebo and enalapril: The Studies of Left Ventricular Dysfunction. J Am Coll Cardiol 1994; 23: 393–400.
19. Kubo SH, Gollub S, Bourge R, et al. Beneficial effects of pimobendan on exercise tolerance and quality of life in patients with heart failure: Results of a multicenter trial. Circulation 1992; 85: 942–949.
20. Blackwood R, Mayou RA, Garnham JC, et al. Exercise capacity and quality of life in the treatment of heart failure. Clin Pharmacol Ther 1990; 48: 325–332.
21. Tandon PK, Stander H, Scharz RP Jr. Analysis of quality of life data from a randomized, placebo-controlled heart-failure trial. J Clin Epidemiol 1989; 42: 955–962.
22. Kostis JB, Rosen RC, Cosgrove NM, et al. Nonpharmacologic therapy improves functional and emotional status in congestive heart failure. Chest 1994; 106: 996–1001.
23. Cowley AJ, Skene AM. Treatment of severe heart failure: Quantity or quality of life? A trial of enoximone. Br Heart J 1994; 72: 226–230.
24. Rich MW, Beckham V, Wittenberg C, et al. A multidisciplinary intervention to prevent the readmission of elderly patients with congestive heart failure. N Engl J Med 1995; 333: 1190–1195.
25. Hawthorne MH, Hixon ME. Functional status, mood disturbance and quality of life in patients with heart failure. Prog Cardiovasc Nurs 1994; 9: 22–32.
26. Quittan M, Sturm B, Wiesinger GF, et al. Quality of life in patients with chronic heart failure: A randomized controlled trial of changes induced by a regular exercise program. Scand J Rehabil Med 1999; 31: 223–228.
27. Kavanagh T, Myers MG, Baigrie RS, et al. Quality of life and cardiorespiratory function in chronic heart failure: Effects of 12 months’ aerobic training. Heart 1996; 76: 42–49.
28. Gorkin L, Norvell NK, Rosen RC, et al. Assessment of quality of life as observed from the baseline data of the Studies of Left Ventricular Dysfunction (SOLVD) trial quality-of-life substudy. Am J Cardiol 1993; 71: 1069–1073.
29. Stewart AL, Greenfield S, Hays RD, et al. Functional status and well-being of patients with chronic conditions: Results from the medical outcomes study. JAMA 1989; 262: 907–913.
30. Albanese MC, Plewka M, Gregori D, et al. Use of medical resources and quality of life of patients with chronic heart failure: A prospective survey in a large Italian community hospital. Eur J Heart Fail 1999; 1: 411–417.
31. Wolinsky FD, Wyrwich KW, Nienaber NA, et al. Generic versus disease-specific health status measures: An example using coronary artery disease and congestive heart failure patients. Eval Health Prof 1998; 21: 216–243.
32. Ware JE Jr, Snow KK, Kosinski J, et al. SF-36 Health Survey Manual and Interpretation Guide. Boston, The Health Institute, New England Medical Center, 1993.
33. Romm FJ, Hulka BS, Mayo F. Correlates of outcomes in patients with congestive heart failure. Med Care 1976; 14: 765–776.
34. Chin MH, Goldman L. Gender differences in 1-year survival and quality of life among patients admitted with congestive heart failure. Med Care 1998; 36: 1033–1046.
35. Jaagosild P, Dawson NV, Thomas C, et al. Outcomes of acute exacerbation of severe congestive heart failure: Quality of life, resource use, and survival—SUPPORT Investigators: The Study to Understand Prognosis and Preferences for Outcomes and Risks of Treatments. Arch Intern Med 1998; 158: 1081–1089.
36. Konstam V, Salem D, Pouleur H, et al. Baseline quality of life as a predictor of mortality and hospitalization in 5025 patients with congestive heart failure. Am J Cardiol 1996; 78: 890–895.
37. Diehr P, Williamson J, Patrick DL, et al. Patterns of self-rated health in older adults before and after sentinel events. J Am Geriatr Soc 2001; 49: 36–44.
38. Fox E, Landrum-McNiff K, Zhong Z, et al. Evaluation of prognostic criteria for determining hospice eligibility in patients with advanced lung, heart, or liver disease. JAMA 1999; 282: 1638–1645.
39. Adler GS. A profile of the Medicare Current Beneficiary Survey. Health Care Financ Rev 1994; 15: 153–163.
40. Medicode. The International Classification of Diseases, Ninth Revision, Clinical Modification. Salt Lake City, UT, Medicode Publications, ed 5, 1995.
41. Hebert PL, Geiss LS, Tierney EF, et al. Identifying persons with diabetes using Medicare claims data. J Med Qual 1999; 14: 270–277.
42. Patrick DL, Erickson P. Health Status and Health Policy: Allocating Resources to Health Care. New York, Oxford University Press, 1993.
43. Mossey JM, Shapiro E. Self-rated health: A predictor of mortality among the elderly. Am J Public Health 1984; 72: 800–808.
44. Katz S, Ford AB, Moskowitz RW, et al. Studies of illness in the aged: The Index of ADL—A standardized measure of biological and psychosocial function. JAMA 1963; 185: 914–919.
45. Lawton MP, Brody EM. Assessment of older people: Self-maintaining and instrumental activities of daily living. Gerontologist 1969; 9: 179–186.
46. Deyo RA, Cherkin DC, Ciol MA. Adapting a clinical comorbidity index for use with ICD-9-CM administrative databases. J Clin Epidemiol 1992; 45: 613–619.
47. Romano PS, Roos LL, Jollis JG. Adapting a clinical comorbidity index for use with ICD-9-CM administrative data: Differing perspectives. J Clin Epidemiol 1993; 46: 1075–1079.
48. Charlson ME, Pompei P, Ales KL, et al. A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation. J Chronic Dis 1987; 40: 373–383.
49. Chin MH, Goldman L. Correlates of early hospital readmission or death in patients with congestive heart failure. Am J Cardiol 1997; 79: 1640–1644.
50. Diehr P, Patrick DL. Probabilities of transition among health states for older adults. Qual Life Res 2001; 10: 431–442.
51. McCullagh P. Regression models for ordinal data. J R Stat Soc [Ser B] 1980; 42: 109–142.
52. Zeger SL, Liang KY. Longitudinal data analysis for discrete and continuous outcomes. Biometrics 1986; 42: 121–130.
53. Stata Corp. Stata Statistical Software: Release 7.0. College Station, TX, Stata Corp., 2001.
54. Havranek EP, Masoudi FA, Westfall KA, et al. Spectrum of heart failure in older patients: Results from the national heart failure project. Am Heart J 2002; 143: 412–417.
55. Pulignano G, Del Sindaco D, Tavazzi L, et al. Clinical features and outcomes of elderly outpatients with heart failure followed up in hospital cardiology units: Data from a large nationwide cardiology database (IN-CHF Registry). Am Heart J 2002; 143: 45–55.
56. Riedinger MS, Dracup KA, Brecht ML, et al. Quality of life in patients with heart failure: Do gender differences exist? Heart Lung 2001; 30: 105–116.
57. Cline CM, Willenheimer RB, Erhardt LR, et al. Health-related quality of life in elderly patients with heart failure. Scand Cardiovasc J 1999; 33: 278–285.
58. Riegel B, Moser DK, Carlson B, et al. Gender differences in quality of life are minimal in patients with heart failure. J Card Fail 2003; 9: 42–48.
59. Riedinger MS, Dracup KA, Brecht ML. Predictors of quality of life in women with heart failure. J Heart Lung Transplant 2000; 19: 598–608.
60. Miller B, McFall S, Campbell RT. Changes in sources of community long-term care among African American and white frail older persons. J Gerontol 1994; 49: S14–S24.
61. Cagney KA, Agree EM. Racial differences in skilled nursing care and home health use: The mediating effects of family structure and social class. J Gerontol B Psychol Sci Soc Sci 1999; 54B: S223–S236.
62. Jollis JG, Ancukiewicz M, DeLong ER, et al. Discordance of databases designed for claims payment versus clinical information systems: Implications for outcomes research. Ann Intern Med 1993; 119: 844–850.
63. Psaty BM, Boineau R, Kuller LH, et al. The potential costs of upcoding for heart failure in the United States. Am J Cardiol 1999; 84: 108–109.
64. U.S. Department of Health and Human Services. National Death Index User's Manual. Hyattsville, MD, U.S. Department of Health and Human Services, 2000.