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Date of filling in this questionnaire or last update: 05/05/2021
1. IDENTIFICATION & BASIC DESCRIPTION
Cohort name
  Workers exposed to electromagnetic fields at different frequencies of EMF
Country
 

  • Poland
Name
  Alicja Bortkiewicz
Institution
  Nofer Institute of Occupational Medicine
Email
  alab@imp.lodz.pl
Phone
  +48426314588
Do you want to add another Principal Investigator of the Cohort
 

  • Add another Principal Investigator of the cohort
Name
  Elzbieta Gadzicka
Institution
  Nofer Institute of Occupational Medicine
Email
  elag@imp.lodz.pl
Phone
  +48426314590
Name
  Marek Zmyślony
Institution
  Nofer Institute of Occupational Medicine
Email
  zmyslmar@imp.lodz.pl
Phone
  +48426314557
Do you want to add another Principal Investigator for occupational analyses
 

  • Add another Principal Investigator for occupational analyses
Name
  Piotr Politański
Institution
  Nofer Institute of Occupational Medicine
Email
  piotr.politanski@imp.lodz.pl
Phone
  +48426314614
Name of committee
  Regional Bioethics Commission of the Nofer Institute of Occupational Medicine in Łódź
Upload files
 

Contact Principal Investigator (name)
  Alicja Bortkiewicz
Data access policy (briefly describe)
  data access will be available on the basis of individual agreement
Is this cohort part of a consortium? (name consortium)
  no
Participation in pooled analyses
 

  • The cohort is potentially interested in participating in pooled analyses of (European) occupational cohort studies (note pooled analyses also includes remote decentralized analyses that would not require any transfer of primary data as well as meta-analyses).
Main aim of cohort, please briefly describe the main objectives of the cohort
  Analysis a relationship between exposure to EMF at different frequencies and health with special regards to cardiovascular system and neurovegetative regulation
Study design (please select as many as appropriate)
 

  • Other
Specify: Other
  The studies were performed in selected substations where the workers were exposed to 50/60 Hz EMF and broadcaststations with exposure to radio ferquency EMF. We examined all workers in these stations
Source population (please select as many as appropriate)
 

  • Industry / occupation-based
  • Other
Specify: Other
  workers of broadcasting stations, radioservices and power stations
Comparators (please select as many as appropriate)
 

  • Other
Specify: Other
  Radio Link Stations (RLS) The control group was similar to the exposed group in terms of the tasks to be performed and organization of work.
Inclusion criteria
  all men workers in selected substations and boradcast stations
Exclusion criteria
  women
Enrollment
  Completed
Age range at entry (main cohort)
 

Minimum Maximum Mean
20 68 46.9 (13.1)

Age range at entry (subcohort)
 

Minimum Maximum Mean Please describe
24 56 37±13 cohort examined at first in 1999 yr. never exposed to EMF, starting work in long-wave broadcasting station; repeated examinations in 2001, 2003, 2005, 2007, 2016

Men at enrollment
  260
Women at enrollment
  only men
Children (<18 years) at enrollment
  n/a
Men at last follow-up
  it wasn't follow up studies, except one subcohort exposed to long-wave EMF (13 men)
Women at last follow-up
  only men
Children (<18 years) at last follow-up
  n/a
Participation rate at enrollment (if known)
  100
Comments
  There were studies in workers exposed to electromagnetic fields at different frequencies:
Power Stations - (50/60 Hz), 63 workers,
Broadcasting Stations UHF (300–3000 MHz), VHF (30–300 MHz), -71 workers,
Medium Frequency Broadcast Stations (1.5-6000 MHz), 71 workers
Long-wave boradcasting station (225 kHz) - 13 workers (subcohort)
Radioservices (160 MHz) -42 men
Radio Link Stations (control group) 42 men
2. OUTCOME FOLLOW-UP
Type of data for outcome follow-up (please select as many as appropriate)
 

  • Active (contact with participants)
Active (contact with participants) (specify)
 

  • phone contact
First follow-up period (provide year)
  1999
Last follow-up period (provide year)
  2016
Number of follow-ups after baseline (provide number)
  13 workers
Participation at last follow-up (if known)
  100
Comments
  The examined group of subcohort is unique in Poland, because it is only one long-wave boradcasting station. The first examination was performed just after opening this station, in subjects who were never been occupationally exposed to EMF
3. OCCUPATIONAL EXPOSURES
Source of exposure data collected (please select as many as appropriate)
 

  • Environmental samples
Occupational history/time frame
  Lifetime
Occupational coding performed
  No
Types of exposure measurements
 

  • Workplace sampling
Methods for exposure assessment (please select as many as appropriate)
 

  • Expert assessment
  • Measurements (external sampling, biomarkers)
  • Other (specify)
Specify: Other
  measurement by a specialist according to methods described in the attached papers
Main categories
 

  • Physical agents
Physical agents
 

  • Radiation
Physical agents | Radiation
 

  • Non-ionising
Other
 

  • Other
Specify: Other
  50 Hz, EMF UHF_VHF, medium -frequency EMF, long-wave EMF,160 MHz,
Physical agents | Work/non-work interface
 

  • Other (specify)
Physical agents | Work/non-work interface | Specify: Other
  EMF
4. OUTCOMES EVALUATED
Baseline - type of outcome data collected (select more than one if applicable)
 

  • Clinical/functional evaluation, e.g. spirometry, ECGs (specify)
  • Questionnaire, individual (self-recording or interview)
Specify: Clinical/functional evaluation, e.g. spirometry, ECGs
  resting ECG, 24-h Holter monitoring, HRV analysis, 24-h blood pressure monitoring (ABPM), medical examination, questionnaire on life-style, reported diseases, family history,
Follow-up - type of outcome data collected (select more than one if applicable)
 

  • Clinical/functional evaluation, e.g. spirometry, ECGs (specify)
  • Questionnaire, individual (self-recording or interview)
Specify: Clinical/functional evaluation, e.g. spirometry, ECGs
  resting ECG, 24-h Holter monitoring, HRV analysis, 24-h blood pressure monitoring (ABPM), medical examination, questionnaire on life-style, reported diseases, family history,
Diagnostic groups based on ICD10
 

  • I Heart disease
  • Other (specify)
Other (specify)
  neurovegetative disturbances
I Heart disease
 

  • Hypertensive diseases
  • Other, please state
I Heart disease | Other (specify)
  subjective symptoms related to cardiovascular diseases
Other health related outcomes
 

  • Lifestyle change
  • Work participation
  • Other (specify)
Specify: Other
  diet, smoking, alcohol consumption, leisure time physical acitivity, family history
Comments
  questionnaire survey was performed by the physician, specialist in occupational medicine
6. Other Information
 

  • Alcohol
  • Demographics
  • Diet
  • Education
  • Physical exercise
  • Smoking
Please describe plans that are funded or most likely to be funded
  Follow up study is possible in subcohort in the case of obtaining financial support