More stable day-to-day rhythms and higher wake activity were associated with less in youth with bipolar disorder.
Evidence
This cross-sectional actigraphy study measured for 6 to 29 days in 54 adolescents aged 12-18 years with bipolar spectrum disorder and related them to self-reported suicidal ideation while adjusting for depressive symptoms and other covariates.
Caveat
Because the study was cross-sectional and questionnaire timing varied widely relative to actigraphy, it cannot show that activity patterns reduce suicide risk.
Simplified
INTRODUCTION: Risk for suicide is disproportionately elevated among youth with bipolar spectrum disorder (BD), which is characterized by recurrent mood episodes and significant shifts in sleep and circadian rhythm. Disruptions in circadian rhythm, such as 24-h rest-activity patterns, are a relevant risk factor for , yet understudied in BD youth. The present cross-sectional study examined the associations between actigraphy-derived (RARs) and self-reported suicidal ideation (SI) severity in a sample of 54 BD youth (aged 12-18 years).
METHOD: Participants completed daily wrist actigraphy (M = 18.89, range: 6 to 29 days) and non-parametric RAR measures were derived for analyses. At the same time, participants provided self-report data on depressive symptoms and SI severity (number of days between actigraphy start and questionnaire completion: M = -7.74, SD = 13.33, range: -46 to 28 days). Primary analyses examined associations between RAR variables and SI severity, controlling for several key covariates including age, BD subtype, psychotropic medication use, and depressive symptoms. days days
RESULTS: Results revealed that greater interdaily stability and higher average activity levels during wake were associated with lower SI severity. These results remained significant even when controlling for the aforementioned covariates.
CONCLUSION: Results indicated that greater and more consistent activity levels within and across days are associated with lower suicide risk. Findings suggest that RARs are relevant for suicide risk detection and intervention for BD youth.
Key numbers
86%
Decrease in Odds of Critical Items
Risk Ratio = 0.14 for endorsing critical items on the SIQ-JR.
54 participants
Sample Size
Final sample size after exclusions for actigraphy and self-report data.
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