Validation of case-mix measures derived from self-reports of diagnoses and health

A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation

1987 • 44,619 citations

Adapting a clinical comorbidity index for use with ICD-9-CM administrative databases

1992 • 10,174 citations

Validation of a combined comorbidity index

1994 • 6,000 citations

Proportional hazards tests and diagnostics based on weighted residuals

1994 • 4,890 citations

Time‐Dependent ROC Curves for Censored Survival Data and a Diagnostic Marker

2000 • 2,484 citations

Overview of the SF-36 Health Survey and the International Quality of Life Assessment (IQOLA) Project

1998 • 2,470 citations

Comparison of methods for the scoring and statistical analysis of SF-36 health profile and summary measures: summary of results from the Medical Outcomes Study.

1995 • 1,728 citations

Can Comorbidity Be Measured By Questionnaire Rather than Medical Record Review?

1996 • 1,027 citations

Comorbidity and functional status are independent in older cancer patients.

1998 • 985 citations

Importance of Functional Measures in Predicting Mortality Among Older Hospitalized Patients

1998 • 781 citations

The SUPPORT Prognostic Model: Objective Estimates of Survival for Seriously Ill Hospitalized Adults

1995 • 565 citations

A Chronic Disease Score with Empirically Derived Weights

1995 • 551 citations

Patterns of Care Related to Age of Breast Cancer Patients

1987 • 547 citations

The Importance of Co-existent Disease in the Occurrence of Postoperative Complications and One-Year Recovery in Patients Undergoing Total Hip Replacement

1993 • 493 citations

Measuring comorbidity in older cancer patients

2000 • 474 citations

Health Status in VA Patients: Results from the Veterans Health Study

1999 • 309 citations

Outcomes of patients with hypertension and non-insulin dependent diabetes mellitus treated by different systems and specialties. Results from the medical outcomes study

1995 • 290 citations

Diagnosis-based risk adjustment for Medicare capitation payments.

1996 • 288 citations

The Impact of Comorbid and Sociodemographic Factors on Access to Renal Transplantation

1993 • 251 citations

Studying Outcomes and Hospital Utilization in the Elderly

1992 • 231 citations

Assessing the impact of comorbidity in the older population

1996 • 224 citations

Judging hospitals by severity-adjusted mortality rates: the influence of the severity-adjustment method.

1996 • 183 citations

Predicting Who Dies Depends on How Severity Is Measured: Implications for Evaluating Patient Outcomes

1995 • 170 citations

Chronic disease, functional health status, and demographics: a multi-dimensional approach to risk adjustment.

1996 • 144 citations

Outcomes of Patients with Hypertension and Non-Insulin-Dependent Diabetes Mellitus Treated by Different Systems and Specialties

1995 • 133 citations

Taking health status into account when setting capitation rates: a comparison of risk-adjustment methods

1996 • 132 citations

Differences in Patient Characteristics Between Veterans Administration and Community Hospitals

1987 • 124 citations

The Importance of Comorbidities in Explaining Differences in Patient Costs

1996 • 121 citations

Development and testing of a new measure of case mix for use in office practice.

1995 • 119 citations

Predicting In-Hospital Mortality The Importance of Functional Status Information

1995 • 109 citations

The SUPPORT Prognostic Model

1995 • 103 citations

Patterns of care related to age of breast cancer patients

1987 • 96 citations

The Association of the SF-36 Health Status Survey With 1-Year Socioeconomic Outcomes in a Chronically Disabled Spinal Disorder Population

1999 • 88 citations

Patient reports of health status as predictors of physiologic health measures in chronic disease

1987 • 79 citations

Clinical assessments as predictors of one year survival after hospitalization: Implications for prognostic stratification

1988 • 74 citations

Assessing relative health plan risk with the RAND-36 health survey.

1995 • 73 citations

The validity of self-reports on chronic disease: characteristics of underreporters and implications for the planning of services.

1996 • 56 citations

The impact of comorbid and sociodemographic factors on access to renal transplantation

1993 • 50 citations

Comparison of Interview-Based and Medical-Record Based Indices of Comorbidity Among Breast Cancer Patients

1999 • 50 citations

Comparing Generic and Disease-Specific Measures of Physical and Role Functioning

1998 • 49 citations

Risk Adjustment for the Medicare program: lessons learned from research and demonstrations.

1998 • 38 citations