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PubMed1986

Sleep patterns and problems in adolescents.

A sleep questionnaire was administered to 390 students in an urban high school. Total sleep hours per week appeared to decrease between the ages of 12 and 18 years. In general, girls slept more than boys. The quality of sleep and the perception of sleep adequacy also decreased with age. Reporting of the occasional use of sleep medications and alcohol at bedtime was 4.6% and 10.5%, respectively. These findings suggest that sleep problems among adolescents represent normal physiologic processes as well as some serious disturbances that may reflect the social pressures prevalent during adolescence.

Adolescent↗

PubMed1999

A meta-analytic review of psychological treatments for tinnitus.

Meta-analysis is a technique of combining results from different trials in order to obtain estimates of effects across studies. Meta-analysis has, as yet, rarely been used in audiological research. The aim of this paper was to conduct a meta-analysis on psychological treatment of tinnitus. The outcomes of 18 studies, including a total of 24 samples and up to 700 subjects, were included and coded. Included were studies on cognitive/cognitive-behavioural treatment, relaxation, hypnosis, biofeedback, educational sessions and problem-solving. Effect sizes for perceived tinnitus loudness, annoyance, negative affect (e.g. depression) and sleep problems were calculated for randomized controlled studies, pre-post-treatment design studies and follow-up results. Results showed strong to moderate effects on tinnitus annoyance for controlled studies (d = 0.86), pre-post designs (d = 0.5) and at follow-up (d = 0.48). Results on tinnitus loudness were weaker and disappeared at follow-up. Lower effect sizes were also obtained for measures of negative affect and sleep problems. Exploratory analyses revealed that cognitive-behavioural treatments were more effective on ratings of annoyance in the controlled studies. It is concluded that psychological treatment for tinnitus is effective, but that aspects such as depression and sleep problems may need to be targeted in future studies.

Adaptation, Psychological↗

PubMed2004

Etiologies of associations between childhood sleep and behavioral problems in a large twin sample.

OBJECTIVE: To examine the etiologies of covariation of childhood sleep problems and other behavioral/emotional problems in young children. METHOD: The parents of more than 6,000 twin pairs provided information on their twins' anxiety, conduct, and hyperactivity at ages 3, 4, and 7 by completing the Strengths and Difficulties Questionnaire. Information on sleep problems was obtained at age 3/4. RESULTS: Phenotypic correlations in preschool years between sleep problems and anxiety, conduct, and hyperactivity ranged from 0.17 to 0.22. These correlations were largely due to shared environmental factors (0.72-0.96) and less to heredity (0.05-0.26) and nonshared environment (0.00-0.06). Sleep problems at age 3/4 years predicted at age 7 years anxiety (beta =.12, p <.001), conduct problems (beta =.09, p <.001), and hyperactivity (beta =.07, p <.001), after accounting for stability of these problems. These predictive associations were also mainly mediated by shared environment (0.16-0.91), although genetic (0.02-0.84) and nonshared environmental (-0.03-0.09) factors were also influential. CONCLUSIONS: The modest associations between early sleep problems and later behavioral/emotional problems are largely accounted for by common psychosocial risk factors. Further research on which specific risks may mediate these connections is needed.

Analysis of Variance↗

PubMed2000

Treatment of sleep disturbance in Alzheimer's disease.

The prevalence of Alzheimer's disease (AD) is rapidly increasing as growing numbers of people around the world are living to old age. Sleep disturbances are a common, and often highly disruptive, behavioral symptom associated with AD. Nevertheless, the study of sleep in AD is relatively new. Little is known about the moderating factors that may alter a given patient's risk for developing sleep problems, or that may influence severity of presentation and persistence. Current treatments for improving sleep in AD fall into three broad categories: (i) pharmacological; (ii) cognitive-behavioral or psycho-educational strategies; and (iii) biological/circadian therapies. There are few studies demonstrating the efficacy of these treatments with community-dwelling AD patients, although studies with persons in institutional settings are promising. In this review, it is suggested that sleep problems in AD are multi-factorial, and influenced by a variety of demographic, physical, psychiatric and situational factors. These factors vary in how readily they can be modified and in how relevant they are to any individual case. Thus, when developing a treatment plan for sleep problems in a dementia patient, it is important to evaluate the underlying causes as well as the context in which the problems are occurring, and to target the intervention accordingly.

Journal Article↗

PubMed1994

Insomnia in Vietnam era veteran twins: influence of genes and combat experience.

Genetic and environmental influences on insomnia were studied in 2,825 pairs of Vietnam era veteran male twins. The self-reported sleep problems studied included trouble falling asleep, trouble staying asleep, waking often, waking tired and a composite sleep scale. Twin correlations for each of the sleep problems were larger in monozygotic than in dizygotic pairs, with heritability estimates ranging from 0.21 to 0.42. There was no effect of common familial environment. Phenotypic correlations for combat experience and sleep problems were small, ranging from 0.00 to 0.09, with no differences seen in monozygotic and dizygotic twins. When the effects of genes and combat exposure were evaluated simultaneously, there was a significant genetic contribution to all sleep measures, but combat exposure was significantly associated only with overall sleep quality, waking often and having trouble staying asleep.

Adult↗

PubMed2005

Polysomnographic measures of nocturnal sleep in patients on chronic, intermittent daytime haemodialysis vs those with chronic kidney disease.

BACKGROUND: Numerous factors probably contribute to the high prevalence of sleep problems in haemodialysis (HD) patients including metabolic changes and treatment-related factors. In contrast, the sleep problems of patients with chronic kidney disease (CKD) may be more related to psychological factors rather than the metabolic changes associated with renal disease. Thus, the objective of this study was to compare polysomnographic measures of nocturnal sleep in a group of stable patients on chronic, intermittent daytime HD and an age- and gender-matched, metabolically comparable group with CKD, and evaluate the role that quality of life (including psychological factors) and the effects of treatment may play in sleep outcomes. METHODS: The sample included 16 patients on HD and eight patients with CKD all of whom were free from other significant physical and psychological morbidity. To assess for psychological, functional, family and economic responses to the disease and treatment, all subjects took the Ferrans and Powers Quality of Life Index. HD subjects received treatment three times a week and were adequately dialysed [Kt/V >1.2, equivalent to a weekly glomerular filtration rate (GFR) of 10-15 ml/min]; CKD subjects had an estimated GFR of 14.5 (+/-7.2; range 5.4-28.8) ml/min. All subjects underwent one night of laboratory-based polysomnography. Appropriate statistical procedures were used to explore group differences in sleep variables and their relationship to quality of life dimensions and the effect of treatment. RESULTS: The CKD patients reported significantly poorer functional and psychological quality of life; both groups had reduced total sleep time and sleep efficiency in comparison with normative data. However, HD subjects had less rapid eye movement sleep (P = 0.032). They also had a higher brief arousal index (P = 0.000), an independent predictor of which was treatment with HD, and respiratory disturbance index (P = 0.061). Less total sleep time, increased wake after sleep onset, lower sleep efficiency, higher periodic limb movement index, and longer latencies to sleep onset and rapid eye movement sleep were also noted in the HD group. Quality of life scores did not predict sleep variables in this small sample. CONCLUSIONS: The results suggest that the sleep problems of patients with CKD and those receiving chronic, intermittent daytime HD may have different aetiologies; functional and psychological factors may play a more prominent role in the former group, while intrinsic sleep disruption (arousals, apnoeas and limb movements) secondary to the effects of chronic, intermittent daytime HD may play a more significant role in the latter. The findings suggest that further exploration is warranted and that population-specific sleep-promoting interventions may be indicated.

Adult↗

PubMed1994

Over-the-counter sleep aids: widely used but rarely studied.

Over-the-counter (OTC) sleep aids are used in greater proportions than benzodiazepines for the treatment of sleep problems, yet limited research has focused on these nonprescription drugs. This article reports the results of two studies that examined the use of OTC sleep aids and alcohol for sleep problems by university students. Of those subjects in both studies who reported sleep problems 1 day per month or more, 6.4% of men and 11.4% of women reported using OTC sleep aids, however, a significantly greater percentage of men reported using alcohol to induce sleep (23.4% vs. 10.9%, p < .008). Future studies on OTC sleep aids are recommended to address a broader range of issues such as potential side effects and at-risk populations, tolerance effects, and individual differences in responsiveness and sensitivity to these drugs.

Adolescent↗

PubMed2002

Effects of residents' depression, sleep, and demand for medication on benzodiazepine use in nursing homes.

OBJECTIVE: This study sought to identify risk factors associated with the prescription and use of benzodiazepines in nursing homes and to assess the prevalence and determinants of demand for benzodiazepines among nursing home residents. METHODS: Data were available for 2,060 residents who had participated in a previous study of use of medications in 18 randomly selected nursing homes in Wisconsin between 1986 and 1989. Data sources included nursing home and pharmacy records; nurses' assessments of residents' behavior, pain, sleep, and demand for medication; and researchers' observations of resident requests for medication. Measures of benzodiazepine use included benzodiazepine prescriptions, prevalence and extent of as-needed drug use, and chronic use as defined by Health Care Financing Administration guidelines. RESULTS: A quarter of the residents received prescriptions for benzodiazepines. Of these, 71 percent received prescriptions to aid sleep or to be taken at bedtime; 32 percent used benzodiazepines for a longer period than recommended; and 26 percent requested medication. Logistic regression analysis showed that residents with depression, pain, or sleep problems were more likely to have received benzodiazepines and to have requested medication. Chronic use was significantly higher among residents with depression, sleep problems, or multiple benzodiazepine regimens and among those who requested medication. Demand and sleep problems also were associated with higher rates of any as-needed use and with higher numbers of as-needed doses used. CONCLUSIONS: Efforts to improve benzodiazepine use in nursing homes must address the need for better assessment and management of depression, sleep, pain, and residents' demand for these medications.

Aged↗

PubMedDate not supplied

A twin-study of sleep difficulties in school-aged children.

This study examines frequency, overlap, and genetic and environmental influences on sleep difficulties, which are understudied in school-aged children. The Sleep Self Report and the Children's Sleep Habits Questionnaire were completed by 300 twin pairs (aged 8 years) and their parents. Child report suggested more frequent sleep problems than parent report (e.g., regular sleep onset delay was reported by 45% of children and 17% of parents). Associations between most of the sleep difficulties were small but significant (e.g., r(s)=.16 for parent report of bedtime resistance and sleep onset delay). Twin correlations based on parent reports suggest greater genetic influence (M=50%) than those based on child self-report (M=18%). Possible rater effects should be considered when evaluating children's sleep problems.

Child↗

PubMedDate not supplied

[A survey of sleeping difficulties in an urban Latin American population].

AIMS: To report the results of the first regional survey on the prevalence of sleep disturbances in an urban Latin American population. SUBJECTS AND METHODS: Door-to-door and telephone interviews in main urban areas were performed in two phases. In phase one, 1776 adults, aged 18 to 70 were interviewed in Buenos Aires and São Paulo. In phase two, adults aged 18 to 77 were interviewed in Buenos Aires, São Paulo and Mexico City (n = 300 in each city). RESULTS: Two-thirds of those surveyed in phase 1, regardless of age and gender, reported some type of sleep problem within the last 12 months. Up to 25 % of individuals surveyed in phase 2 reported being severely affected or moderately affected by their sleep problems. The severity of the condition increased with age, women being more severely affected than men. On average, individuals reported suffering from sleep difficulties for a period of 5 years and were affected 15.5 nights per month. Although 8.2 hours of sleep was most desired, Latin Americans were sleeping on average 5.8 hours per night. Those severely affected lost about 3 hours per night. Individuals reported stress and worry as the primary trigger for their sleep problems, followed by health concerns. All respondents reported the negative impact of poor sleep on their health and quality of life. CONCLUSIONS: The survey indicates that the prevalence of sleep difficulties in an urban Latin America population is high.

Adolescent↗

PubMed1991

Sleep difficulties, pain and other correlates.

A multiple regression analysis was used with variables relevant to sleeping problems from a large community health survey in South Australia. The variables that were found to be most strongly correlated with sleep problems were, in order of importance, pain, anxiety, age, somatic health and annual household income, all of which accounted for 22% of the variance. Weight problems, depression and sex of the respondent were not so important in this analysis. Arthritis, which often increases with age, appeared to be most strongly associated with pain, explaining in part why sleeping problems increase with age. Anxiety, pain and poor somatic health were most strongly associated with lying awake at night or sleeping badly, and anxiety and pain were most strongly correlated with taking longer to get to sleep. Poor somatic health and anxiety were most strongly associated with waking early, and age and pain were the most important variables in taking tablets to aid sleep.

Age Factors↗

PubMed2005

Obstructive sleep apnea and head and neck neoplasms.

OBJECTIVE: To elaborate the relationship between obstructive sleep apnea (OSA) and head and neck neoplasms (HNN). STUDY DESIGN AND SETTING: A systematic review of the MEDLINE literature. RESULTS: Thirty of 34 articles indexed under OSA and HNN were about neoplasms that presented first as OSA. Four of the articles were about treatment of HNN causing OSA and gave incidences varying from 8% to 92%. Quality of life surveys confirm that patients with malignant HNN have sleep problems. Xerostomia may contribute to these sleep problems, and the role of salivary mucins deserves consideration. CONCLUSIONS: This review of the literature raises several new research questions about the clinical and biological relationships between OSA and HNN.

Comorbidity↗

PubMed2002

Effect of valerian, Valeriana edulis, on sleep difficulties in children with intellectual deficits: randomised trial.

Serious sleep problems are common in children with an intellectual deficit (ID), and are often the source of much distress for both the child and caregivers. As yet, no satisfactory long-term treatment exists for intransigent sleep difficulties in children with an ID. Valerian, Valeriana spp., has been used for thousands of years to induce relaxation and sleep. Scientific investigation of valerian's sleep promoting ability in humans, whilst limited, has yielded promising findings. This initial study aimed to explore valerian's potential for assisting in the treatment of sleep problems in children with an ID. Five children with varying intellectual deficits and different primary sleep problems underwent eight continuous weeks of monitoring via sleep diaries, adhering to a double blind, placebo controlled and randomised design. Compared to baseline and placebo, valerian treatment led to significant reductions in sleep latencies and nocturnal time awake, lengthened total sleep time and improved sleep quality. The treatment was apparently most effective in children with deficits that involved hyperactivity. Although the findings are preliminary and in need of replication, there is evidence to suggest that valerian may be useful in the safe and effective long-term treatment of intransigent sleep difficulties in children with ID's, and therefore warrants further investigation.

Administration, Oral↗

PubMed2005

Symptoms of sleep disturbance in persons with Alzheimer's disease and normal elderly.

We retrospectively analyzed sleep time and sleep disturbance symptoms in 399 healthy, non-demented elderly (NDE) and 263 persons with a diagnosis of possible (n = 53) or probable (n = 210) Alzheimer's disease (AD). Our primary objective was to determine differences in subjective sleep disturbance between these samples. Secondary objectives were to determine if subjects with time in bed (TIB) < or =6 h per night reported more sleep disturbance and whether sleep complaints were associated with more severe cognitive and/or functional impairment. The prevalence of 'sleep problems' (a single item) was significantly lower in NDE (18.3%) than AD (27.6%), and the proportions of each cohort reporting TIB < or =6 h per night were very low (NDE: 6.0%; AD: 3.5%) and not significantly different. Less TIB was correlated with better cognitive function for AD (P < 0.01), and cognition and function were significantly worse for AD subjects with estimates of >6 h of TIB compared with those with estimates of < or =6 h (P < 0.05). Greater sleep disturbance was correlated with greater functional impairment in both cohorts; but only in AD did greater estimated TIB also correlate with greater functional impairment (all P < 0.05). In general, estimated TIB was not associated with mood in either cohort; however, in both cohorts depression was significantly associated with sleep disturbance symptoms and was significantly worse in those who reported having 'sleep problems'. There was no association between subjective perception of 'sleep problems', the number and frequency of sleep disturbance symptoms, and estimated TIB in either group.

Activities of Daily Living↗

PubMed2005

Sleep disturbances in Japanese patients with Parkinson's disease--comparing with patients in the UK.

Sleep disorders are common in the general population and occur more frequently with advancing age. However, patients with Parkinson's disease (PD) have been known to have various sleep disturbances beyond those to be expected from the effect of aging alone. We tried to quantify the various aspects of nocturnal sleep problems in PD using the PD sleep scale (PDSS). 64 patients with PD and 60 age- and sex-matched controls completed the PDSS. After neurological examinations, we assessed the degree of sleep disorder by the PDSS. We evaluated the severity of PD by the Hoehn and Yahr Scale and the unified PD rating scale (UPDRS). To compare the various aspects of nocturnal sleep problems in PD between in Japan and in the United Kingdom (UK), we referenced and compared our results with those by Chaudhui et al. The PDSS scores in PD group were significantly different from those in controls. Individual items of the scale showed good discriminatory power between PD and controls. Overall tendencies were the same in Japan and in the UK, but there were some different points, especially absence of refreshing quality of sleep in Japan. We believe that the PDSS provides an objective method for targeted therapeutic approaches for the treatment of disturbed sleep in PD even among countries with different cultures, such as Japan and the UK.

Adult↗

PubMed2006

Sleep disorders in psychiatry.

Sleep is an active state that is critical for our physical, mental, and emotional well-being. Sleep is also important for optimal cognitive functioning, and sleep disruption results in functional impairment. Insomnia is the most common sleep disorder in psychiatry. At any given time, 50% of adults are affected with 1 or more sleep problems such as difficulty in falling or staying asleep, in staying awake, or in adhering to a consistent sleep/wake schedule. Narcolepsy affects as many individuals as does multiple sclerosis or Parkinson disease. Sleep problems are especially prevalent in schizophrenia, depression, and other mental illnesses, and every year, sleep disorders, sleep deprivation, and sleepiness add billions to the national health care bill in industrialized countries. Although psychiatrists often treat patients with insomnia secondary to depression, most patients discuss their insomnia with general care physicians, making it important to provide this group with clear guidelines for the diagnosis and management of insomnia. Once the specific medical, behavioral, or psychiatric causes of the sleep problem have been identified, appropriate treatment can be undertaken. Chronic insomnia has multiple causes arising from medical disorders, psychiatric disorders, primary sleep disorders, circadian rhythm disorders, social or therapeutic use of drugs, or maladaptive behaviors. The emerging concepts of sleep neurophysiology are consistent with the cholinergic-aminergic imbalance hypothesis of mood disorders, which proposes that depression is associated with an increased ratio of central cholinergic to aminergic neurotransmission. The characteristic sleep abnormalities of depression may reflect a relative predominance of cholinergic activity. Antidepressant medications presumably reduce rapid eye movement (REM) sleep either by their anticholinergic properties or by enhancing aminergic neurotransmission. Intense and prolonged dreams often accompany abrupt withdrawal from antidepressant drugs, a reflection of an REM rebound after drug-induced REM deprivation. The postulated link between sleep and psychiatric disorders has been reinforced by the findings of modern neurobiology.

Circadian Rhythm↗

PubMed2001

Epidemiology of severe insomnia and its consequences in Germany.

This is the first nation-wide face-to-face survey on the prevalence of well-defined severe insomnia and its impact on quality of life in the general population of Germany. The survey was part of an international epidemiological study, which was also conducted in Belgium, Great Britain, Ireland and Sweden. A representative sample of 1913 adults aged 18 years and over were interviewed in all parts of Germany according to the quota method. Subjects with symptomatic insomnia were identified using an algorithm compatible with the principal criteria for severe insomnia defined in the fourth revision of the Diagnostic and Statistical Manual of Mental Diseases (DSM-IV). Subjects provided data on quality of life using the Short Form 36 Health Survey (SF-36) questionnaire and on health care consumption. Prevalence of severe insomnia in Germany was found to be 4%, which was lower than in other European countries (6-22%). Severe insomnia was more prevalent among women, the unemployed, those living alone after divorce or separation, and those in large cities, but not more frequently in the elderly (aged 65 years and over). The majority of subjects had chronic complaints, with 74 % of them suffering from severe sleep problems for over a year's duration (average 56+/-23 months). Consultations with general physicians, medication usage, medical tests and hospitalisation were greater among severe insomniacs compared to subjects who had no sleep complaints. The question regarding overall appreciation of quality of life was rated as bad in 22% and good in 28% of severe insomniacs compared to 3% (bad) and 68 % (good) in subjects with no sleep complaints. Despite this, only 55% of severe insomniacs had ever discussed their sleep problem with a doctor and the proportion who consulted their doctor specifically regarding sleep problems in the previous 12 months was even lower (36%). The vast majority (73%) was not taking hypnotic or sedative medications. In conclusion, insomnia, even when severe, is a common and a chronic complaint in Germany. This trial suggests that while, on the one hand, sleep disorders have a significant impact on patient's quality of life and consumption of health care, it is, on the other hand, a condition that is poorly recognised and for which patients are, for unknown reasons, reluctant to seek treatment.

Adolescent↗

PubMed2006

Level of agreement between patient self-report and observer ratings of health-related quality of life communication in oncology.

OBJECTIVE: To determine the level of agreement between patients and observers regarding the frequency with which health-related quality of life topics are discussed during outpatient clinical oncology visits. METHODS: The sample (n=50) consisted of a consecutive series of cancer patients undergoing chemotherapy. Both the patients and observers used a checklist to report which HRQL topics had been discussed during the consultation. Percentage of agreement, kappa and adjust-kappa statistics were calculated. RESULTS: The percentage agreement between patients' and observers' ratings was generally high, ranging from 74% for fatigue to 96% for sleep problems and cognitive functioning. The average percentage of agreement over the 13 HRQL topics rated was 86%. Cohen's kappa varied between 0.41 (for pain) and 0.78 (for sleep problems). Prevalence-adjusted kappa's were generally higher, ranging from 0.48 (for fatigue) to 0.92 (for sleep problems and social functioning). The average Cohen's kappa and prevalence-adjusted kappa over the 13 HRQL topics were 0.56 and 0.71, respectively. Level of agreement was not found to vary significantly as a function of patients' background characteristics. CONCLUSION: Oncology patients' self-reports of the HRQL-related topics discussed during outpatient chemotherapy visits are in reasonably close agreement with those provided by observers. PRACTICE IMPLICATIONS: Our results indicate that the patient is a legitimate source of information about the HRQL-related content of medical encounters, and thus can be used in communication studies where the collection of observational data (e.g., via audio- or videotaping) is either too costly or logistically impractical.

Adult↗