Tubbs AS, Fernandez FX, Johnson DA, et al. - Findings from a nationally representative sample revealed greater likelihood to have recent suicidal ideation among individuals who spent more time awake at night, while the opposite was identified as true for those with more time spent awake in the morning.

• From the US National Health and Nutrition Examination Survey for the years 2015 to 2018, complete data on suicidal ideation status, time to bed, and time out of bed were retrieved for a final sample of 10,166 participants (51.1% female).

• Suicidal ideation in the past 2 weeks was reported in a total of 385 survey participants (47.5% female).

• An association of wakefulness between 11:00 pm and 5:00 am was observed with suicidal ideation.

• Conversely, there appeared reduced odds of suicidal ideation in correlation with wakefulness between 5:00 am and 11:00 am in all models.

• Sociodemographic factors did not influence these associations and thus these associations were not confounded by varying rates of suicidal ideation in different populations.