During the initial data collection phase, workers filled out pre- and post-shift questionnaires to report musculoskeletal symptoms and fatigue levels.
A total of 230 questionnaires were collected, amounting to a total of 696 pages (54 × 8-page diary + 88 × 3-page pre- and post-shift questionnaire).
The post-shift questionnaire was specific to the workers' department (ramp versus sorting hall) to allow for recognizable, job-specific vocabulary and tasks.
After the work shift was completed, the workers filled out a post-shift questionnaire which repeated the fatigue and body pain questions, as well as including items on the amount of time spent performing specific postures and tasks during that particular shift.
The post-shift questionnaire also asked workers to report information on the duration of tasks performed and postures assumed during their shift, as well as what assistive equipment, such as conveyor belts and baggage wagons, they had used during their shift.
That cheapening in turn meant a complicated redesign of survey operations, including a shift to online questionnaires and cheaper ways of estimating populations.
However, recently, the Bergen Shift Work Sleep Questionnaire (BSWSQ) was constructed for the purpose of assessing symptoms of shift-related sleep-wake disturbances separately for the day, evening and night shifts, as well as rest days.
19 The Bergen Shift Work Sleep Questionnaire (BSWSQ): BSWSQ systematically assesses the insomnia symptoms and sleepiness/tiredness separately for different work shifts (day, evening, night shifts) and rest days.
These surveys provide the first evidence using a standardised community survey methodology for child health assessment of a major shift in parental questionnaire compliance for an urban population over a 15 year period to 2006.
A total of 3681 permanent daytime workers and 599 shift workers completed a questionnaire designed to assess the above variables.
Work hours and shift were measured by questionnaire and cross-checked with the personnel files.
