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Assessing the coding reliability of work accidents statistical data: How coders make a difference.

Celeste Jacinto1, Fernando P Santos2, Carlos Guedes Soares2

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Summary
This summary is machine-generated.

Coding accident statistics reliably is crucial. Expert coders achieve high reliability, but non-experts show a significant decrease in accuracy when using the European Statistics of Accidents at Work (ESAW) system.

Keywords:
Accident dataContent analysisESAW variablesIntercoder reliabilityReliability coefficients

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Area of Science:

  • Occupational health and safety
  • Statistical data quality assessment
  • Workplace accident analysis

Background:

  • The European Statistics of Accidents at Work (ESAW) system is vital for workplace safety research and policy.
  • Portugal's governmental Cabinet for Strategy and Planning (GEP) currently handles ESAW coding.
  • Transitioning to electronic forms (e-forms) may involve non-expert coders, potentially impacting data reliability.

Purpose of the Study:

  • To quantify the reliability of accident data coding performed by expert coders (GEP).
  • To assess the impact on reliability when non-experts code ESAW data.
  • To identify specific variables or codes that may require improvement for better consistency.

Main Methods:

  • Estimation of intercoder and intracoder reliability for 8 nominal variables.
  • Utilized 3 reliability coefficients calculated across 3 distinct software packages.
  • Compared reliability metrics between an expert group (GEP) and two groups of non-expert coders.

Main Results:

  • Expert coders (GEP) demonstrated good to excellent reliability (68-98%) for ESAW variables.
  • A significant reliability loss (-5% to -39%) was observed when non-experts performed the coding.
  • Certain variables consistently showed higher reliability regardless of coder expertise.

Conclusions:

  • The coder's profile substantially influences the reliability of accident data coding.
  • Transitioning coding tasks to non-experts necessitates careful consideration due to potential reliability decline.
  • Further investigation into improving specific ESAW codes and cross-EU reliability assessments is recommended.