Suicide among Italian police officers from 1995 to 2017.

Suicide rate in police officers is higher than in the general population worldwide. This paper assesses and analyzes the trends in suicide rates of Italian police officers from 1995 to 2017, comparing these with the trends of Italian general population. We reviewed all cases of active Italian police officers who died by suicide from 1995 through 2017 (N=271). We calculated age- and gender- specific suicide rates among police officers and the Italian general population. We carried out descriptive chi-squared analyses for categorical variables, and one-way ANOVA for continuous variables, performing a joinpoint regression to analize suicide trends. The mean police suicide rate was 11.78 per 100,000 individuals per year (95% CI=11.18-12.06). Joinpoint regression analyses of the period 1995-2017 showed that suicide rates of Italian police officers significantly decreased from 1995 to 2007 (annual percent change [APC]: -5.75%), followed by a period of a non-significant increase (APC: 3.9%). The period as a whole showed a non-significant decrease (APC: -1.7%). During 1995-2014, suicide rates were significantly higher among police officers vs. the age-adjusted general population (p<0.001), in male police vs. Italian male residents younger than 65 (p<0.001), and in female police vs. the female age-adjusted general population (p<0.05). Suicide rates among Italian police officers were significantly higher than those of the national resident population younger than 65 years. Annual suicide rate trends among Police showed a significant reduction in the period 1995-2007 followed by a stable trend until 2017. The entire period 1995-2017 showed a non-significant decreasing trend.