Prevalence of comorbidity in patients with a chronic airway obstruction and controls over the age of 40

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

1996 • 1,027 citations

Self-reports and general practitioner information on the presence of chronic diseases in community dwelling elderly

1996 • 926 citations

Chronic Obstructive Pulmonary Disease Stage and Health-Related Quality of Life

1997 • 427 citations

Agreement between Questionnaire Data and Medical Records of Chronic Diseases in Middle-aged and Elderly Finnish Men and Women

1997 • 425 citations

Seven chronic conditions: their impact on US adults' activity levels and use of medical services.

1995 • 365 citations

Pulmonary rehabilitation in chronic respiratory insufficiency. 7. Health-related quality of life among patients with chronic obstructive pulmonary disease.

1994 • 231 citations

Prevalence of asthma and COPD in general practice in 1992: has it changed since 1977?

1996 • 130 citations

Non-ulcer dyspepsia and peptic ulcer: the distribution in a population and their relation to risk factors.

1996 • 104 citations

Respiratory Risk Factors and Mortality: Longitudinal Studies in Washington County, Maryland

1989 • 97 citations

Consultation rates and incidence of intercurrent morbidity among patients with chronic disease in general practice.

1994 • 57 citations

Chronic Obstructive Pulmonary Disease and Symptoms Related to Depression in Elderly Persons

1995 • 54 citations

Occult lung cancer in patients with bullous emphysema

1997 • 30 citations

Corticosteroids and Ulcers: Is There an Association?

1996 • 29 citations

LUNG CANCER AND CHRONIC OBSTRUCTIVE PULMONARY DISEASE

1996 • 9 citations

Deleted Work

1955 • 0 citations