The role of preoccupation in attributions for poor sleep

Insomnia is a key risk factor for persistent anxiety and depressive symptoms: A 12-month longitudinal cohort study during the COVID-19 pandemic

BACKGROUND

Insomnia is a risk factor for affective disorders. This study examined whether individuals with insomnia symptoms early in the pandemic, either pre-existing or new-onset, were more vulnerable to anxiety and depressive symptoms over time than those who maintained normal sleep. Additionally, sleep-related factors such as pre-sleep arousal were assessed for their influence on clinically significant anxiety and depression risk.

METHODS

Using a global online survey with 3-, 6-, and 12-month follow-ups between April 2020 and May 2021, data from 2069 participants (M = 46.16 ± 13.42 years; 75.3 % female) with pre-existing, new-onset, or no insomnia symptoms was examined using mixed-effects and logistic regression models.

RESULTS

New-onset and pre-existing insomnia predicted persistent anxiety and depressive symptoms longitudinally (p's < 0.001), over other known risk factors, including age, sex, and previous psychiatric diagnoses. Anxiety and depressive symptoms in both insomnia groups remained above clinically significant thresholds at most time points, whereas normal sleepers remained subclinical. Pre-sleep arousal was found to increase the risk of clinically significant anxiety (OR = 1.05) and depressive symptoms (OR = 1.09) at 12-months. Sleep effort contributed to anxiety (OR = 1.06), whereas dysfunctional sleep-related beliefs and attitudes predicted clinically significant depression (OR = 1.22).

LIMITATIONS

Insomnia group categorization was based on self-report at baseline supported by a validated measure. High participant attrition was observed at 3-months (53 %; n = 971), but retention remained steady till 12-months (63 %, n = 779).

CONCLUSIONS

Insomnia is a modifiable risk factor for persistent anxiety and depressive symptoms that needs to be addressed in mental healthcare. Additionally, pre-sleep arousal may be an important transdiagnostic process linking insomnia with affective disorders.

The Natural History of Insomnia: the incidence of acute insomnia and subsequent progression to chronic insomnia or recovery in good sleeper subjects

STUDY OBJECTIVES

The primary aim of the present study was to estimate the incidence per annum of acute insomnia and to what extent those that develop acute insomnia recover good sleep or develop chronic insomnia. Unlike prior studies, a dense-sampling approach was used here (i.e. daily diaries) and this allowed for a more precise detection of acute insomnia and the follow-on states (the transitions to either recovery or chronic insomnia).

METHODS

Good sleeper subjects (n = 1,248; 67% female) that were at least 35 years old participated in this prospective study on the natural history of insomnia. Subjects were recruited nationwide and completed online assessments for 1 year. The online measures consisted primarily of daily sleep diaries, as well as weekly/bi-weekly and monthly measures of sleep, stress, and psychological and physical health.

RESULTS

The 1-year incidence rate of acute insomnia was 27.0% (n = 337). The incidence rate of chronic insomnia was 1.8% (n = 23). Of those that developed acute insomnia, 72.4% (n = 244) went on to recover good sleep. 19.3% (n = 65) of the acute insomnia sample continued to experience persistent poor sleep, but did not meet criteria for chronic insomnia.

CONCLUSIONS

The incidence rate of acute insomnia (3 or more nights a week for between 2 and 12 weeks) is remarkably high. This said, most incident cases resolve within a few days to weeks. Incident chronic insomnia only occurs in about 2 in 100 individuals.

Common health problems, yellow flags and functioning in a community setting

INTRODUCTION

Common health problems such as pain, depression and fatigue have a high impact on daily life, work and healthcare utilization. This study aimed to investigate the prevalence of these complaints in a UK community setting and to establish whether psychosocial risk factors, or 'yellow flags', moderate their impact on daily life and work.

METHODS

580 women and 420 men participated in a cross-sectional survey in the UK in 2007. 467 (57.2%) of the 816 working age adults in this sample reported complaints over the last month and were included in the moderator multivariate analysis.

RESULTS

Women and the not employed group reported a higher number and greater extent (frequency x severity) of complaints. Statistically significant models emerged for interference with daily life (F (9,457) = 36.54, P < 0.001, adjusted R (2) = 0.407) and time off work (F (4,462) = 31.22, P < 0.001, adjusted R (2) = 0.213). Age (beta = .238) and socio-economic status (beta = -.216) were associated with time off work. Extent of complaints and number of yellow flags were independently associated with interference with daily life (extent beta = .25, yellow flags beta = .15) and time off work (extent beta = .154, yellow flags beta = .201). No moderating effect of yellow flags was found.

CONCLUSIONS

Common health problems and yellow flags can be briefly and simply assessed. A broader approach is needed in managing these complaints in community and work contexts, moving beyond reducing complaint severity. Interventions need to acknowledge and address people's beliefs and affective responses to complaints, as well as wider socio-economic issues.