Suicides in workers of locomotive crews at railway: probability of development, period of occurrence, possible psychophysiological and laboratory prediction

The goal of this work was to investigate probability of development, period of occurrence and prediction of possible suicides among workers of locomotive crews at Trans-Baikal Railway. From 2008 to 2013, regular observations of respondents have revealed 22 cases of committed suicides, which were estimated among volume of data collected for 7 959 persons (workers of locomotive crews) by methods of statistical analysis. Predictors of suicide were identified: age factor in inverse relationship to its relative risk. Combination of age predictor and stress as a risk factor correlates with increasing suicide probability. By using survival analysis probability of occurrence and period of suicide occurrence in different age periods were revealed; methods of psychophysiological and laboratory prediction of this outcome were proposed.