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Temporal Trend of Occupational Injuries; First Versus Second Half of a Working Shift

Sanati K. A., Yadegarfar G., Naghavi H., Mansouri M., Sanati J. G. H.

International Journal of Occupational Safety and Ergonomics

2010

Vol. 16, No. 1

49--54

Objectives. To assess occupational injuries in the 1st versus 2nd half of a working shift in terms of (a) the likelihood of hospital referral following an injury event; (b) the external causes of injuries. Methods. Logistic regression analyses of data from a 16-year (1991–2007) experience of ongoing surveillance of occupational injuries in a synthetic fiber factory in Iran. Results. The likelihood of a hospital referral following an injury in the 1st half of a shift was higher than in the 2nd half (adjusted odds ratio [OR] 1.50, 95% confidence interval [CI] 1.10–2.00). Comparing the 2 halves of the shift, an injury occurring in the 2nd half was more likely to be due to exposure to smoke, fire and flames (OR 2.34, 95% CI 1.06–5.19) or transport accidents (OR 1.84, 95% CI 1.06–3.21). Conclusions. Time-specific safety interventions could be used in the risk management of occupational injuries. Further studies to investigate the effect of time-dependent interventions are recommended.