Extended Data Fig. 2: The trend and seasonality of suicide across regions.
From: Increase in suicide following an initial decline during the COVID-19 pandemic in Japan
Panels a1-e1 show the observed per-month suicide rate per million in each prefecture. Panels a2-e2 represent the seasonal suicide trend before the pandemic (Feb 2017- Jan 2020, three years) and during the pandemic. Panels a3-e3 describe the suicide trends after eliminating the effects of suicide trend and seasonality. To do so, we regress suicide rate on city-by-month fixed effects, and city-specific suicide linear time trends, and eliminate these effects. Panel a uses all observations (1,848 cities), Panel b uses the cities in Hokkaido prefecture (177 cities), Panel c uses Tokyo prefecture (57 cities), Panel d uses Nara prefecture (39 cities), and Panel e uses Fukuoka prefecture (73 cities).
