| 1. IDENTIFICATION & BASIC DESCRIPTION |
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Cohort name
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Firefighter Longitudinal Health Study [FLoHS]
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Country
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Please provide any other information on the cohort location/s if needed
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Minas Gerais State
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Name
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Alina Vasconcelos
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Institution
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Universidade Federal de Minas Gerais
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Email
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alinagomide@gmail.com
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Phone
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5531989911517
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Personal website
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@alinagomide
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Do you want to add another Principal Investigator of the Cohort
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- Add another Principal Investigator of the cohort
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Name
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Eduardo Lima
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Institution
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Universidade Federal de Minas Gerais
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Email
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edpl@hotmail.com
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Phone
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31988412829
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Do you want to add another Principal Investigator of the Cohort
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- Add another Principal Investigator of the cohort
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Name
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Kevin Teoh
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Institution
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Birkbeck, University of London
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Email
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k.teoh@bbk.ac.uk
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Phone
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44 7923 376812
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Personal website
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@kevinteohrh
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Name
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Elizabeth do Nascimento
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Institution
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Universidade Federal de Minas Gerais
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Email
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bethdonascimento@gmail.com
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Name of committee
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Research Ethics Committee of the Minas Gerais Federal University
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Upload files
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Contact Principal Investigator (name)
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Alina Gomide Vasconcelos
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Is this cohort part of a consortium? (name consortium)
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No
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Participation in pooled analyses
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- 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).
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Main aim of cohort, please briefly describe the main objectives of the cohort
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FLoHS aims are: (1) to develop a work-based exposure model of PTSS and (2) to better understand the dynamic relationship between individual, operational, and organisational risk factors over time in the development of PTSS and other mental health symptoms in this group.
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Study design (please select as many as appropriate)
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Specify: Other
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FLoHS had admitted three cohorts to the study at different years: Cohort 2014 (N = 573), Cohort 2017 (N = 493) and Cohort 2020 (N=523))
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Source population (please select as many as appropriate)
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- Industry / occupation-based
- Other
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Specify: Other
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Firefighters
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Comparators (please select as many as appropriate)
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- Internal study population
- External comparison of workers with other exposure
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Inclusion criteria
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Three inclusion criteria: (1) being admitted to the Fire Service through a public selection procedure in either 2014 or 2017; (2) starting their career as a private (the first position in the firefighter hierarchy); and (3) having received initial training at the Academy of the Fire Services
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Exclusion criteria
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Two exclusion criteria: (1) were absent at baseline data collection; (2) left the Fire Service before finishing their nine-months training period.
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Enrollment
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Ongoing
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Age range at entry (main cohort)
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| Minimum |
Maximum |
Mean |
| 18 |
30 |
24-27 |
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Men at enrollment
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1430
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Women at enrollment
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159
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Children (<18 years) at enrollment
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0
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Men at last follow-up
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88.5%
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Women at last follow-up
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11.5%
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Children (<18 years) at last follow-up
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0
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Participation rate at enrollment (if known)
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55
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Comments
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In total, 979 individuals were admitted to Fire Service in 2014 (2014 Cohort baseline). Of these, 386 did not fit the study inclusion criteria because they did not train in the Firefighter Academy. Of
the 593 individuals eligible, 12 were absent from data collection due to sick leave and eight did not complete the questionnaire. This meant a sample size of 573 (96.6% response rate). At the follow up of this group (2014 Cohort follow up 1), 16 participants had left the Fire Service. Of the 557 eligible for follow up, 312 firefighters participated (56% response rate; 54.07% of the baseline). Differences between respondents and non-respondents in 2014 Cohort follow up 1 were not significant for sex, age, race, trauma exposure and most mental health symptoms (0.0001 < chi-square tests < 6.90; p > 0.05). The only exception was that there was a higher percentage of probable PTSS cases among nonrespondents at the baseline measure (chi-square tests = 3.85; p = 0.05).
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| 2. OUTCOME FOLLOW-UP |
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Type of data for outcome follow-up (please select as many as appropriate)
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- Active (contact with participants)
- Disease incidence records
- Hospital / physician diagnoses
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Active (contact with participants) (specify)
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- For follow-up assessments (T1,…, Tn), the various cohorts of participants were invited to answer the online follow-up questionnaire every 24 months. Invitations were made through institutional e-mail, telephone contact and visits to Fire Service units.
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Disease incidence records (specify)
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- Absenteism, seek leave and ICD diagnoses were checked
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Hospital / Physician diagnoses (specify)
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- Absenteism, seek leave and ICD diagnoses were checked
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First follow-up period (provide year)
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2017
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Last follow-up period (provide year)
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2024
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Number of follow-ups after baseline (provide number)
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5
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| 3. OCCUPATIONAL EXPOSURES |
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Source of exposure data collected (please select as many as appropriate)
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- Questionnaire, Personal (Self-reporting or interview)
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Occupational history/time frame
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Follow-up period
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Occupational coding performed
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Yes
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Methods for exposure assessment (please select as many as appropriate)
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Main categories
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- Ergonomics, physical workload, and injury related
- Psychosocial domains
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Ergonomics, physical workload, and injury related
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- Physical work load (e.g. heavy lifting of people or objects, pushing/pulling)
- Repetitive work movements
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Psychosocial domains | Job task characteristics/organization of work
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- Career advancement opportunities
- Effort-reward imbalance (ERI)
- Job control, autonomy
- Psychological job demands
- Role conflict/ambiguity/clarity
- Social support at work from supervisors
- Skill use opportunities
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| 4. OUTCOMES EVALUATED |
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Baseline - type of outcome data collected (select more than one if applicable)
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- Questionnaire, individual (self-recording or interview)
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Follow-up - type of outcome data collected (select more than one if applicable)
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- Death certificates
- Medical records
- Questionnaire, individual (self-recording or interview)
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Outcome type (please select as many as appropriate)
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Diagnostic groups based on ICD10
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F Mental disorders
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- Mood [affective] disorders
- Depression
- Other, please state
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F Mental disorders | Other (specify)
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PTSD
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Other health related outcomes
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- Lifestyle change
- Quality of life/wellbeing
- Sickness absence
- Sleep
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| 6. Other Information |
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- Alcohol
- Demographics
- Education
- Medical history
- Personality
- Physical exercise
- Socioeconomic status
- Smoking
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Possibility for linkage to data registries/data enrichment via data linkage
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- Employment status
- Mortality register
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