The Study of Men Born in 1943

NCT ID: NCT03138122

Last Updated: 2020-08-19

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Total Enrollment: 798 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 1993-02-09
• Study Completion Date: 2043-12-31

Brief Summary

A random sample a random sample of half of all men born in 1943 and living in the city of Gothenburg, Sweden, have been investigated in 1993 at 50 years of age and will be followed continuously with repeated re-examinations and follow-up concerning mortality and cardiovascular diseased. Out of 1463 invited men, 798 (54.5%) accepted the invitation and is included in this longitudinal cohort study.

Detailed Description

In January 1993 a random sample of half of all men born in 1943 and living in the city of Gothenburg, Sweden, was selected and invited to participate a longitudinal observational cohort study. Out of 1463 invited men, 798 (54.5%) accepted the invitation and were examined for 1st time between February 1993 and June 1994. All participants, at 50 years of age, underwent a physical examination including anthropometric measurements, blood pressure and ECG. Several questionaires about previous diseases, life style, physical stress, family history, medications, symptoms and psychosocial factors were included. Blood samples were drawn from an antecubital vein after a nights fast. Basal laboratory analysis were performed. In addition several samples of whole blood, serum and plasma were stored in a freezer (-80○ Celsius) for later analysis.

In 2003, at 60 years of age, a 2nd examination was performed with similar methodology and examination´s. At this time 655 of the original 798 men participated.

A 3rd examination was performed between May 2014 and December 2014. In addition to physical examinations, questionnaires and laboratory analysis an echocardiographic examination, a sleep recording, screening for atrial fibrillation with thumb-EKG and investigation with Arteriography was added.

Echocardiographic examinations were performed by experienced cardiologist in accordance with clinical routine using ultrasound system (Vivid 7 Dimension, GE Medical systems, Horten, Norway), together with commercially available analysis software (GE Vingmed Ultrasound EchoPAC PC, General Electric Healthcare, Little Chalfont, UK) and in agreement with ESC guideline for echocardiography EAE recommendations.

The sleep recording was conducted for one night in the patients home using Apnélink, Apnélink plus or Apnélink air. All participants also answered the Epworth sleepiness scale (ESS) and the functional outcome of sleep questionnaire (FOSQ).

Screening for atrial fibrillation were performed using a thumb-ECG (Zenicor Medical System, Sweden), during a two week-period immediately after the physical examination. ECG was registered by the participants at their home, by placing their thumbs on two electrodes for 30 seconds two times a day, one time in the morning and one in the evening, and also additionally in case they experience any symptoms such as dizziness or palpitations, in a duration of a 2-week period.

In Sweden, all hospital admissions since 1978 are registered in the National Patient Register (NPR) and classified according to the International Classification of Diseases (ICD 8 until 1986; ICD 9 until 1996, ICD 10 since 1997 and continuing). At each examination, information about hospitalizations, medication and morbidity was obtained. During follow-up, death certificates, autopsy reports, and medical records were obtained and studied for all participants. Follow-up will be continues for each of the original 798 participants until death. New examinations will be performed every 5-10 years during follow-up.

Endpoints that are registered include: death, cause of death, myocardial infarction, ischemic heart disease, heart failure with reduced, mid-range and preserved ejection fraction, atrial fibrillation, cerebral infarction, cerebral haemorrhage, diabetes mellitus, deep vein thrombosis, pulmonary embolism, any cancer, fractures and dementia.

The study complies with the Declaration of Helsinki, and the study protocols was approved by the Ethical Committee of Gothenburg (DNR 157-93 in 1993, DNR: 67-03, in 2003 and DNR 649-13 in 2013).

Aims:

1. To study the incidence and prevalence of cardiovascular risk factors and cardiovascular diseases in a random sample from the general population.

2. To study secular trends in cardiovascular risk factors and cardiovascular diseases by comparing this cohort of men born in 1943 to other cohorts of men born in 1913, 1923, 1933, 1953 and 1963 living in the same geographic area and investigated using the same methodology.

3. To study risk factors for various cardiovascular diseases in a longitudinal cohort study.

In 2016 all men who participated in the 2014 examiniation was invited to a cognitive screening. In total 333 of these men particpated in the screening which included the following tests: Immediate and Delayed Text Recall, Symbol Digit Modalities Test (SDMT), reduced version of The Boston Naming Test, The Clox and Cube Test, The Token Test, Stroop III, Ray-Osterrieth Complex Figure Test (ROCF), F-A-S verbal fluency test. Parallel Serial Mental Operations (PaSMO), and Trailmaking A.

An additional aim was then added:

4. To study risk factors for dementia / cognitive impairment

Conditions

Cardiovascular Risk Factor; Atrial Fibrillation; Congestive Heart Failure; Sleep Apnea; Cardiovascular Diseases

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Eligibility Criteria

Inclusion Criteria

• Men born in 1943 and living in the city of Gothenburg, Sweden

Exclusion Criteria

• None

• Minimum Eligible Age: 50 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: No

Sponsors

Sahlgrenska University Hospital

OTHER

Sponsor Role: lead

Responsible Party

Per-Olof Hansson

M.D, Ph.D.,

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Sahlgrenska University Hospital / Östra

Gothenburg, Västra Götaland County, Sweden

Countries

Sweden

References

Barywani SB, Ostgard Thunstrom E, Mandalenakis Z, Hansson PO. Body iron stores had no impact on coronary heart disease outcomes: a middle-aged male cohort from the general population with 21-year follow-up. Open Heart. 2022 Apr;9(1):e001928. doi: 10.1136/openhrt-2021-001928.

Reference Type: DERIVED

PMID: 35410912 (View on PubMed)

Sakalaki M, Hansson PO, Rosengren A, Thunstrom E, Pivodic A, Fu M. Multi-modality biomarkers in the early prediction of ischaemic heart disease in middle-aged men during a 21-year follow-up. BMC Cardiovasc Disord. 2021 Feb 2;21(1):65. doi: 10.1186/s12872-021-01886-x.

Reference Type: DERIVED

PMID: 33530933 (View on PubMed)

Chen X, Thunstrom E, Hansson PO, Rosengren A, Mandalenakis Z, Zhong Y, Ergatoudes C, Caidahl K, Fu M. High prevalence of cardiac dysfunction or overt heart failure in 71-year-old men: A 21-year follow-up of "The Study of men born in 1943". Eur J Prev Cardiol. 2020 May;27(7):717-725. doi: 10.1177/2047487319871644. Epub 2019 Aug 25.

Reference Type: DERIVED

PMID: 31446787 (View on PubMed)

Other Identifiers

SahlgrenskaUH/Östra

Identifier Type: -

Identifier Source: org_study_id