External review and validation of the Swedish national inpatient register

The american rheumatism association 1987 revised criteria for the classification of rheumatoid arthritis

1988 • 19,632 citations

Revised Criteria for the Classification of Rheumatoid Arthritis

1990 • 7,730 citations

The Swedish personal identity number: possibilities and pitfalls in healthcare and medical research

2009 • 2,072 citations

The American College of Rheumatology 1990 criteria for the classification of wegener's granulomatosis

1990 • 1,927 citations

Limitations of the Application of Fourfold Table Analysis to Hospital Data

1946 • 1,783 citations

Association of chronic inflammation, not its treatment, with increased lymphoma risk in rheumatoid arthritis

2006 • 847 citations

Schizophrenia, Substance Abuse, and Violent Crime

2009 • 673 citations

Collaborative systematic review of the randomised trials of organised inpatient (stroke unit) care after stroke

1997 • 603 citations

Completeness of the Swedish Cancer Register Non-Notified Cancer Cases Recorded on Death Certificates in 1978

1984 • 567 citations

Collaborative systematic review of the randomised trials of organised in-patient (stroke unit) care after stroke.

1997 • 504 citations

The validity of the diagnosis of acute myocardial infarction in routine statistics A comparison of mortality and hospital discharge data with the Danish MONICA registry

2003 • 457 citations

A Framework for Evaluation of Secondary Data Sources for Epidemiological Research

1996 • 451 citations

The epidemiology of inflammatory bowel disease: A large, population-based study in Sweden

1991 • 444 citations

Risk and case characteristics of tuberculosis in rheumatoid arthritis associated with tumor necrosis factor antagonists in Sweden

2005 • 408 citations

Comparison of Risk Factors for Preeclampsia and Gestational Hypertension in a Population-based Cohort Study

1998 • 390 citations

The validity of a diagnosis of heart failure in a hospital discharge register

2005 • 387 citations

Small-Intestinal Histopathology and Mortality Risk in Celiac Disease

2009 • 356 citations

The Swedish Medical Birth Register - a summary of content and quality

2003 • 349 citations

Collaborative systematic review of the randomised trials of organised inpatient (stroke unit) care after stroke. Stroke Unit Trialists' Collaboration.

1997 • 318 citations

Malignant lymphomas in coeliac disease: evidence of increased risks for lymphoma types other than enteropathy-type T cell lymphoma

2004 • 289 citations

Extra-articular rheumatoid arthritis: prevalence and mortality

1999 • 271 citations

Comparing Swedish hospital discharge records with death certificates: implications for mortality statistics

2000 • 265 citations

Atrial fibrillation in the Malmö diet and cancer study: a study of occurrence, risk factors and diagnostic validity

2009 • 262 citations

Occurrence of Dementia in Advanced Age: The Study Design of the Kungsholmen Project

1992 • 262 citations

Hormone replacement therapy and risk of hip fracture: population based case-control study

1998 • 258 citations

Acromegaly and gastrointestinal cancer

1991 • 249 citations

Indications for operation in suspected appendicitis and incidence of perforation

1994 • 246 citations

Herpes Simplex Encephalitis in Sweden, 1990-2001: Incidence, Morbidity, and Mortality

2007 • 234 citations

Increased death risk and altered cancer incidence pattern in patients with isolated or combined autoimmune primary adrenocortical insufficiency

2008 • 233 citations

Evaluation of diagnostic procedures in Swedish patients with schizophrenia and related psychoses

2005 • 228 citations

Venous thromboembolism discharge diagnoses in the Danish National Patient Registry should be used with caution

2009 • 199 citations

Parity and risk of later-life maternal cardiovascular disease

2010 • 195 citations

Young cases of schizophrenia identified in a national inpatient register

2002 • 189 citations

Cancer incidence in a population‐based cohort of patients with Wegener's granulomatosis

2002 • 189 citations

Recurrence risks for schizophrenia in a Swedish National Cohort

2006 • 183 citations

Announcements

1978 • 174 citations

[Reliability of the hospital registry. The diagnostic data are better than their reputation].

1994 • 168 citations

Measuring Stroke in the Population: Quality of Routine Statistics in Comparison with a Population-Based Stroke Registry

1992 • 159 citations

Risk of connective tissue disease and related disorders among women with breast implants: a nation-wide retrospective cohort study in Sweden

1998 • 136 citations

External Validation of the Swedvasc Registry: A First-time Individual Cross-matching with the Unique Personal Identity Number

2008 • 129 citations

Comparison of different procedures to identify probable cases of myocardial infarction and stroke in two Swedish prospective cohort studies using local and national routine registers.

2000 • 125 citations

Risk of Esophageal Adenocarcinoma in Achalasia Patients, a Retrospective Cohort Study in Sweden

2011 • 124 citations

Coeliac disease and risk of sepsis

2008 • 123 citations

Estimating disease prevalence using a population-based administrative healthcare database

2007 • 121 citations

Amyotrophic Lateral Sclerosis in Sweden, 1991-2005

2009 • 117 citations

Sensitivity and specificity of dementia coding in two Swedish disease registries

2004 • 97 citations

Identification of Cases of Myocardial Infarction: Hospital Discharge Data and Mortality Data Compared to Myocardial Infarction Community Registers

1991 • 86 citations

Validity of the diagnosis schizophrenia in a psychiatric inpatient register: A retrospective application of DSM-III criteria on ICD-8 diagnoses in Stockholm county

1987 • 86 citations

The Danish National Hospital Register is a valuable study base for epidemiologic research in febrile seizures

2005 • 81 citations

Recent time trends in acute myocardial infarction in Stockholm, Sweden

2000 • 76 citations

Diagnosis-dependent misclassification of infections using administrative data variably affected incidence and mortality estimates in ICU patients

2006 • 73 citations

Lund Stroke Register: hospitalization pattern and yield of different screening methods for first-ever stroke

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Identification of Incident Injuries in Hospital Discharge Registers

2008 • 60 citations

Acute Myocardial Infarction in Stockholm - a Medical Information System as an Epidemiological Tool

1978 • 53 citations

Incidence of postoperative gallstone disease after antiobesity surgery: population-based study from Sweden

2009 • 53 citations

Guillain-Barré syndrome in South-West Stockholm, 1973-1991, 1. Quality of registered hospital diagnoses and incidence

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Identification of dementia in epidemiological research: a study on the usefulness of various data sources

2007 • 41 citations

In search of the best method to predict acute coronary syndrome using only the electrocardiogram from the emergency department

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The inpatient care of patients with diabetes mellitus and foot ulcers. A validation study of the correspondence between medical records and the Swedish Inpatient Registry with the consequences for cost estimations

2000 • 37 citations

Karolinska Institutet

1961 • 33 citations

Validity and utilization of epidemiological data: A study of ischaemic heart disease and coronary risk factors in a local population

2008 • 31 citations

Increased Mortality Risk in Patients With Phenotypic Hereditary Hemochromatosis But Not in Their First-Degree Relatives

2009 • 22 citations

Monitoring the “tip of the iceberg'': Ambulance records as a source of injury surveillance

2008 • 20 citations

Gender Differences in Vascular Interventions for Lower Limb Ischaemia

2001 • 19 citations

Quality of diagnostic coding and information flow from hospital to general practice

2004 • 17 citations

Quinine sulfate for pain in the guillain‐barré syndrome

1978 • 13 citations

Health classifictions in the Nordic countries : Historic development in a national and international perspective 2006

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Health Classifications in the Nordic Countries

2006 • 9 citations

On the need of validating inpatient registers

2008 • 5 citations