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Table 2 Main categories and data extracted from included articles

From: Association of working conditions including digital technology use and systemic inflammation among employees: study protocol for a systematic review

Main categories

Data to be extracted

I

Study characteristics

- Authors and year of publication

- Study design

- Country of study

- Period of follow-up and follow-up rate

- Occupational setting

II

Samples

- Participants: demographics, professional characteristics, health-related variables

- Sample size

III

Type and assessment of exposures/interventions and comparators

- Type of working condition (e.g., job demands, job control, workload, social support, digital technology use)

- Type of workplace intervention (e.g., physical activity, stress reduction)

- Type of comparator

- Methods of assessment

IV

Type and assessment of outcomes

- Category and type of inflammatory markers

- Source of outcomes (blood, saliva)

- Method/technique of assessment

V

Statistical analyses and reported results

- Type of statistical methods and analyses

- Means and variance metrics of inflammatory markers (e.g., standard deviation, confidence intervals)

- Coefficients (β, γ) and/or measures of strength of associations between working conditions and inflammatory markers (OR, RR, HR with SE, and/or 95% CI)

- Effect sizes (if reported or calculable)

- P -values

VI

Moderators/control of confounders

- Potential moderator or confounder variables or analyses (if reported)

- Results of respective analyses (if reported)

VII

Further study information

- Further information of potential interest (e.g., limitations, restrictions to validity)