Fig. 1

Changes in the number of suicides in Tokyo by period (age and gender subgroups). Footnote: 1. ** < .01; * < .05.; 2. Period: 2006–2011, 6 years before the decline in suicide deaths; (January 2006–December 2011); 2011–2017, 6 years after start of the decline (January 2012–December 2017); 3. Age: 19 or younger, younger than or equal to 19 years; 20–39, 20 to 39 years; 40–59, 40 to 59 years; 60 or older, equal to or older than 60