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Improving the reporting of interactions or effect measure modification
  1. Tony Blakely
  1. Correspondence to Dr Tony Blakely, Department of Public Health, University of Otago, Wellington, New Zealand; tony.blakely{at}

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Dragano et al1 analysed cross-country variations in work stress, and the associations between work stress and depression. Their second research question was ‘Does the association of work stress with depression vary by the type of welfare regime?’ Twelve European countries, and approximately 10 000 survey respondents, were included in the analysis. Countries were grouped into four welfare regimes: liberal, conservative, Scandinavian and Southern. The association of two measures of work stress (effort–reward imbalance and low control) with two measures of depression (baseline; follow-up on longitudinal analyses) were examined, giving four possible ‘tests’ …

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  • Linked article 200277.

  • Funding TB received funding support from the Health Research Council of New Zealand (10/248).

  • Competing interests None.

  • Provenance and peer review Not commissioned; internally peer reviewed.

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