Variables to be included in IBDS Project

Posted by Erin Wigger on Jun 9th, 2013 in IBDS Study | Comments Off

Exposures
Dimension	Variables	Way of Measurement
Demographical	Age, sex, educational level, marital status, family members, economical dependants	Ad-hoc questions in a self-report questionnaire
Work-demographical	Type of company: private-public service, department, job position, seniority (in company, in job position-driver-), type of contract (fixed, temporal), salary, number of working days and type of schedule (shifts, rests)	Ad-hoc questions in a self-report questionnaire
Psychosocial stressors	Job strain, Psychological Demands, Job Control, Social support ay work, Job insecurity	JCQ Questionnaire
Psychosocial stressors	Effort-Reward Imbalance (effort, job status, salary, job Esteem)	ERI Questionnaire
Specific Work Organization Exposures	Number of work hours per shift, day or week, overtime work	Self reports or company records
	Number of passengers per day/shift, seats/passengers ratio	Self reports or company records
	Frequency of conflicts with passengers	Self reports
	Unruly behavior of passengers	Self reports
	Specific passenger’s demands	Self reports
	Type of route	Self reports or company records
	Frequency of unity (Bus) mal functioning, failures or breakdowns.	Self reports or company records
	Frequency of rushing because of time demands	Self reports
	Consequences of delays	Self reports
	Frequency of traffic jam	Self reports or company records
	Frequency of Weather conditions while driving (hot, cold, fog, etc)-one item each condition-	Self reports
	Frequency of unexpected closing roads or blocked streets	Self reports
	Frequency of: To be blocked by other driver, inadequate driving of others, aggressions from other drivers	Self reports
	Policy officers or other authority’s demands	Self reports
	Frequency of Violence, assaults, robberies	Self reports
	Type of distraction while driving	Self reports

Outcome variables
Dimension	Variable	Way of Measurement
Safety	Number of disabling work accidents last year ( those keep you out from work)	Self reports or company records
	Number minor work accidents last year (you could continue working)	Self reports or company records
	Frequency of excessive speed up	Self reports or company records
	Frequency of tickets or violation of traffic rules	Self reports or company records
Psychological-neuropsychological	Fatigue	Self reports (Yoshitake questionnaire or checklist strength questionnaire)
	Mental Health	GHQ
	Sleep disorders	?
	Attention span, memory, reaction time?	?
Cardio-metabolic	BMI	Self-report, weight and height objective measurements, company records
	Waist circumference, Waist-hip ratio	Self-report Tape measure, company records
	Skin fold fat?	?
	Cardiovascular symptoms	Self-report
	Glucose	Blood sample –Company records
	Cholesterol	Blood sample –Company records
	Triglycerides	Blood sample –Company records
	VFC	Subsample? -Polar device
	Blood pressure	Clinical? Point estimates? Ambulatory?

Control variables
Dimension	Variable	Way of Measurement
Lifestyle	Exercise	Self report
	Diet	Self report
	Skipping meals	Self report
	Drinking	Self report
	Smoking	Self report
Previous Diseases	Current chronic disease(s)	Self report
Previous Diseases	Family history of disease	Self report
Medication	Medication consumption	Self report
Personality	Type D Personality, Hostility	Self report

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