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Data Extraction

The following questions are included for generating the evidence table. Keep this in mind when deciding how much information to include.

General instructions for Q1-Q45:

    • Use numbers instead of text for expressing quantitative information

    • Use the following abbreviations: N/A, not applicable; NR, not reported.

    • Include page numbers to show from where information has been drawn

  • 1.

    What was the research question?

    • Use author’s own words if provided.

  • 2.

    Describe the study sample and sampling frame, including the sample size, type of industry, size of workplace(s), types of occupations (if included), number of workplaces, and the method of sampling.

      • Include any information about withdrawals here.

  • 3.

    Give any information pertaining to maintenance of the sample

    • (i.

      e., withdrawals, etc.) (Put N/A if not applicable)

  • 4.

    Describe the intervention in detail.

    • Include all information about:

      • o

        elements of the OHSMS being intervened upon

        • o

          levels (e.g., government, head office, etc.) at which the intervention was initiated and delivered

        • o

          by whom, with whose involvement, how, and with what intensity the intervention was delivered

    • Include the corresponding information about any comparison group(s).

    • Include any information about contamination of the comparison group, or compliance of the intervention group (excluding implementation results) here too.

  • 5.

    Describe the experimental design in detail.

    • Elaborate on the design selected in Q7, identifying the number of groups and the timing of measurements.

Effectiveness of Occupational Health & Safety Management Systems: A Systematic Review


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