Effectiveness of the Training Program for Workers at Construction Sites of the High-Speed Railway Line between Torino and Novara: Impact on Injury Rates

Background There are very few published studies evaluating the impact of safety and health training on injury outcomes in the construction industry. The aim of this study was to assess the impact of the training program on injury rates at a major railway construction project. Methods The population consisted of 2,795 workers involved in a safety training program at the construction sites of the high-speed railway line Torino–Novara. Two types of analyses were carried out in order to assess the effectiveness of the training program in reducing the number of injuries: (i) a pre–post analysis, which took into account the fact that workers were enrolled at different times and the training intervention did not occur at the same time for all subjects; (ii) an interrupted time-series model, which corrected for the time trend and considered the autocorrelation between individual observations. Results Twenty-nine percent of workers who spent at least 1 day at the construction sites attended at least one training module. Pre–post analysis: At the end of the training program, the incidence of occupational injuries had fallen by 16% after the basic training module and by 25% following the specific modules. Time-series model: Training led to a 6% reduction in injury rates, which was not statistically significant. Conclusions The training program that was implemented had a moderately positive impact on the health of workers. Further studies are being conducted to obtain a more complete assessment of the actual effectiveness of the program in reducing the incidence of injuries. Am. J. Ind. Med. 52:965–972, 2009. 2009 Wiley-Liss, Inc.