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Table 3 Study questionnaire modules, description of their content and their assessment schedule

From: Effects of a cognitive ergonomics workplace intervention (CogErg) on cognitive strain and well-being: a cluster-randomized controlled trial. A study protocol

Background *Nine items on the background of the participant, e.g. age, gender, education, and length of employment.IGs, PC   
Working ConditionsTen items on working conditions (developed at FIOH), e.g., number of hours, projects and places to work in a typical work week.IGs   
PerformanceTwo items from the Health and Work Performance Questionnaire [39, 40].IGs, PCIGs, PCIGs, PCIGs, PC
Brain Work Profile
BWP questionnaire (developed at FIOH) addresses cognitive demands of work with 39 items in 13 categories. The categories include working amidst disruptions and interruptions, as well as linguistic, memory, and multitasking demands, among others. Each item is assessed for both the frequency and the level of strain vs. engagement.IGs, PCIGs, PCIGs, PCIGs, PC
Knowledge Work Cognitive Failure Scale
Modified version of the Workplace Cognitive Failure Scale (WCFS, [49]), with some knowledge work specific items added, resulting in 18 items on cognitive failures in knowledge work, with five subscales: Memory, Attention, Multitasking, Instructions, and Interruptions.IGs, PCIGs, PCIGs, PCIGs, PC
Copenhagen Psychosocial Questionnaire II
Seven scales with 23 items [41, 42]: Quantitative demands, Cognitive demands, Work-family conflict, Family-work conflict, General health perception, Burnout, and Cognitive stress.IGs,
Stress and RecoveryTwo items assessed on a scale 0 (not problems at all) to 10 (severe problems)IGs, PCIGs, PCIGs, PCIGs, PC
ActionsEighteen items that might affect workflow, such as decreasing the level of office noise or reducing the number of meetings, which were assessed to determine whether the action would improve or reduce workflow.IGs   
ChangeSix items assessed for the level of change, one for each treatment and active control intervention theme: Disruptions, Interruptions, Information Overload, Strain, Recovery, and Work/Life Balance. IGs, PCIGs, PCIGs, PC
  1. BL baseline, EOT end-of-treatment, FU04 follow-up at four months, FU10 follow-up at ten months
  2. IGs Intervention groups, include both the Cognitive Ergonomics Intervention group (treatment) and the Recovery Support Intervention group (active control), PC Passive Control group
  3. * The background module was included in the EOT survey for those participants who were added after the BL or had not responded the BL survey
  4. ** PC received only the Work-Family Conflict and Burnout scales from the COPSOQ-II