Sleep duration of & #8805; 8.5 h on school nights may be associated with the lowest risk of depression/anxiety on average in male adolescents. Although the duration was estimated to be shorter in females ( & #8805; 7.5 h) than males, this should be interpreted carefully. Most adolescents may currently be sleeping less than the optimal duration. < /p > < /div ..."> Sleep duration of & #8805; 8.5 h on school nights may be associated with the lowest risk of depression/anxiety on average in male adolescents. Although the duration was estimated to be shorter in females ( & #8805; 7.5 h) than males, this should be interpreted carefully. Most adolescents may currently be sleeping less than the optimal duration. < /p > < /div ..." /> Sleep duration of & #8805; 8.5 h on school nights may be associated with the lowest risk of depression/anxiety on average in male adolescents. Although the duration was estimated to be shorter in females ( & #8805; 7.5 h) than males, this should be interpreted carefully. Most adolescents may currently be sleeping less than the optimal duration. < /p > < /div ..." />