Sleep duration is an important concept in epidemiological studies. It characterizes a night's sleep or a person's sleep pattern, and is associated with numerous health outcomes. In most large studies, sleep duration is assessed with questionnaires or sleep diaries. As an alternative, actigraphy may be used, as it objectively measures sleep parameters and is feasible in large studies. However, actigraphy and sleep diaries may not measure exactly the same phenomenon. Our study aims to determine disagreement between actigraphic and diary estimates of sleep duration, and to investigate possible determinants of this disagreement. This investigation was embedded in the population-based Rotterdam Study. The study population consisted of 969 community-dwelling participants aged 57-97 years. Participants wore an actigraph and kept a sleep diary for, on average, six consecutive nights. Both measures were used to determine total sleep time (TST). In 34% of the participants, the estimated TST in the sleep diaries deviated more than 1 h from actigraphically measured TST. The level of disagreement between diary and actigraphic measures decreased with subjective and actigraphic measures of sleep quality, and increased with male gender, poor cognitive function and functional disability. Actigraphically measured poor sleep was often accompanied by longer subjective estimates of TST, whereas subjectively poor sleepers tended to report shorter TST in their diaries than was measured with actigraphy. We recommend, whenever possible, to use multiple measures of sleep duration, to perform analyses with both, and to examine the consistency of the results over assessment methods. © 2008 European Sleep Research Society.

https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2869.2008.00638.x

Disagreement between subjective and actigraphic measures of sleep duration in a population-based study of elderly persons

OBJECTIVES: Chronic low back pain (CLBP) adversely affects many quality of life components, and is reported to impair sleep. The aim of this review was to determine the association between CLBP and sleep. METHODS: This review comprised 3 phases: an electronic database search (PubMed, Cinahl Plus, EMBASE, PsychInfo, Pedro, and Cochrane Library) identified potential articles; these were screened for inclusion criteria by 2 independent reviewers; extraction of data from accepted articles; and rating of internal validity by 2 independent reviewers and strength of the evidence using valid and reliable scales. RESULTS: The search generated 17 articles that fulfilled the inclusion criteria (quantitative n=14 and qualitative n=3). CLBP was found to relate to several dimensions of sleep including: sleep disturbance and duration (n=15), sleep affecting day-time function (n=5), sleep quality (n=4), sleep satisfaction and distress (n=4), sleep efficiency (n=4), ability to fall asleep (n=3), and activity during sleep (n=3). Consistent evidence found that CLBP was associated with greater sleep disturbance; reduced sleep duration and sleep quality; increased time taken to fall asleep; poor day-time function; and greater sleep dissatisfaction and distress. Inconsistent evidence was found that sleep efficiency and activity were adversely associated with CLBP. DISCUSSION: Many dimensions of sleep are adversely associated with CLBP. Management strategies for CLBP need to address these to maximize quality of life in this patient cohort. Language: en

The association between chronic low back pain and sleep: a systematic review.

Background
While approximately 70% of chronic low back pain (CLBP) sufferers complain of sleep disturbance, current literature is based on self report measures which can be prone to bias and no objective data of sleep quality, based exclusively on CLBP are available. In accordance with the recommendations of The American Sleep Academy, when measuring sleep, both subjective and objective assessments should be considered as the two are only modestly correlated, suggesting that each modality assesses different aspects of an individual's sleep experience. Therefore, the purpose of this study was to expand previous research into sleep disturbance in CLBP by comparing objective and subjective sleep quality in participants with CLBP and healthy age and gender matched controls, to identify correlates of poor sleep and to test logistics and gather information prior to a larger study.

/pdf/objective-and-subjective-assessment-of-sleep-in-chronic-low-4qmdmcrwu7.pdf

Objective and subjective assessment of sleep in chronic low back pain patients compared with healthy age and gender matched controls: a pilot study

Sleep quality is integral to optimal physical functioning and mental health during pregnancy. There has, however, been little work conducted to determine the most appropriate measure of sleep quality in this clinical group, a surprising observation given the complex and dynamic psychobiology of pregnancy. The Pittsburgh Sleep Quality Index (PSQI) was evaluated to determine the usefulness of this measure in early pregnancy. The psychometric properties of the PSQI were evaluated in women at 14 weeks of pregnancy and revealed the instrument to have good internal consistency and convergent and divergent reliability properties. Confirmatory factor analysis suggested that the removal of the PSQI sleeping medications sub‐scale from the global sleep quality total score calculation would improve the utility of this measure in early pregnancy. Women classified as depressed on the basis of Edinburgh Postnatal Depression Scale (EPDS) scores were found to have significantly poorer sleep quality scores on the majority ...

Assessment and relationship of sleep quality to depression in early pregnancy

Objective
To evaluate sleep quality in patients with chronic rhinosinusitis (CRS) using a validated outcome measure and compare measures of CRS disease severity with sleep dysfunction.

/pdf/sleep-quality-and-disease-severity-in-patients-with-chronic-33boobalj3.pdf

Larry M Jankelowitz

Papers

Cystic fibrosis patients have poor sleep quality despite normal sleep latency and efficiency.