Fig. 2From: Symptoms and risk factors of depression and PTSD in the prolonged COVID-19 pandemic: a longitudinal survey conducted from 2020 to 2022 in JapanMean PHQ-9 scores by sex from T1 to T5. Error bars show the standard error. The mean score of males was higher than that of females, and mean scores at T5 were lower than those at T1 to T4Back to article page