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PubMed2004

Evolution of insomnia: current status and future direction.

Traditional epidemiologic studies of insomnia provide valid but fairly rudimentary information regarding the presence, frequency, duration and evolution of sleep problems. Standardized tools such as validated questionnaires (e.g., Pittsburgh Sleep Quality Index and sleep logs) help assess the presence and severity of sleep problems, while other methods (e.g., SLEEP L system) address insomnia diagnoses. Other instruments (e.g., Structured Clinical Interview for DSM-IV [SCID], Short-Form 36 [SF-36], Epworth Sleepiness Scale [ESS]) provide insights into insomnia consequences and co-morbidities. Sleep laboratory studies using polysomnography (PSG) have also provided useful findings (e.g., relating to sleep apnea and excessive daytime sleepiness) in experimental and population-based patient samples containing subgroups enriched for certain variables under investigation. These methods have significantly increased our knowledge about insomnia. Critically, longitudinal studies are needed to further our understanding of the pathophysiology and morbidity of insomnia, defining roles for risk factors, hyperarousal and co-morbidities and the effects of treatment in long-term disease progression. This review summarizes the current available data on the evolution of insomnia and proposes a model that warrants further research attention and discussion.

Comorbidity↗

PubMed2002

Sleep disturbance in cancer patients.

Sleep difficulty is a prominent concern of cancer patients, yet there has been no large study of the prevalence and nature of sleep disturbance in cancer patients. This cross-sectional survey study examined: (a) the prevalence of reported sleep problems in patients attending six clinics at a regional cancer centre; (b) sleep problem prevalence in relation to cancer treatment; and (c) the nature of reported insomnia (type, duration, and associated factors). For three months, all patients attending clinics for breast, gastrointestinal, genitourinary, gynecologic, lung, and non-melanoma skin cancers were offered a brief sleep questionnaire. Response rate was 87%; the final sample size was 982. Mean age of respondents was 64.9 years (SD 12.5). The most prevalent problems were excessive fatigue (44% of patients), leg restlessness (41%). insomnia (31%), and excessive sleepiness (28%). Chi square tests showed significant variation among clinics in the prevalence of most sleep problems. The lung clinic had the highest or second-highest prevalence of problems. The breast clinic had a high prevalence of insomnia and fatigue. Recent cancer treatment was associated with excessive fatigue and hypersomnolence. Insomnia commonly involved multiple awakenings (76% of cases) and duration > or = 6 months (75% of cases). In 48% of cases, insomnia onset was reported to occur around the time of cancer diagnosis (falling within the period 6 months pre-diagnosis to 18 months post-diagnosis). The most frequently identified contributors to insomnia were thoughts, concerns, and pain/discomfort. In a multivariate logistic regression analysis, variables associated with increased odds of insomnia were fatigue, age (inverse relationship), leg restlessness, sedative/hypnotic use, low or variable mood, dreams, concerns, and recent cancer surgery. This study provides new information about sleep-related phenomena in cancer patients, information which will be useful in planning supportive care services for cancer patients.

Adult↗

PubMedDate not supplied

Are sleep disorders hereditary? A questionnaire survey of elderly persons about themselves and their parents.

The aim of the present study was to investigate the occurrence of sleep complaints in an elderly population in relation to the sleep pattern in their parents. The study is based on a postal questionnaire, which was sent to 10,216 elderly persons in northern Sweden. The mean (s.d.) ages of the participating men and women were 73.0 (6.0) and 72.6 (6.7) years, respectively. Among the men whose parents had no sleep problems, a good night's sleep was reported by 11.1%, and among those whose parents both had such problems, this proportion was 18.9%. The corresponding figures for women were 20.6% and 60.0%, respectively. Restless sleep, frequent awakening, difficulty in getting to sleep again after waking up in the night as well as tiredness at night but with inability to get to sleep was more common in both sexes if either of the parents had difficulty in sleeping, and even more common if such problems had occurred in both parents. Also visits to doctors because of sleep problems and treatment with sleeping pills were more common in both men and women whose parents had had sleep problems, compared with those whose parents had been good sleepers. Thus, a poor sleep was more common in elderly persons if their parents had sleep problems, compared with those whose parents had been good sleepers. The results suggest that hereditary factors could be an underestimated cause of sleep disorders in the elderly.

Journal Article↗

PubMed2026

Sociodemographic and clinical characteristics associated with nocturnal enuresis among children in a tertiary care center in Cairo, Egypt: A cross-sectional study.

BACKGROUND: Nocturnal enuresis (NE) is a significant pediatric health concern that warrants increased attention from healthcare providers, educators, and society. This study aimed to determine the frequency of NE among children attending a tertiary care center in Cairo, Egypt, and to explore their sociodemographic characteristics and associated factors. METHODS: A cross-sectional study was conducted among 1587 children aged 6-16 years attending a tertiary care center in Cairo from December 2022 to February 2024. Data were obtained from parents via a structured questionnaire covering sociodemographic characteristics. Sleep problems were assessed via the Children's Sleep Habits Questionnaire. The multivariate logistic regression analysis was conducted to estimate the odds ratio and identify factors associated with NE. RESULTS: The total prevalence of NE among children attending a tertiary care center was 333 (21%). Our results indicated that being female and being older were associated with a lower likelihood of NE. Low socioeconomic status (OR = 5.559; 95% CI = 1.24-24.88), stressful events (OR = 3.697; 95% CI = 1.73-7.88), a family history of NE (OR = 26.231; 95% CI = 8.617-79.85), and sleep problems (OR = 13.233; 95% CI = 6.082-28.793) were associated with increased odds of NE. Furthermore, consuming caffeinated drinks before sleep, the presence of urinary tract infections, and intestinal infestations were also associated with NE. CONCLUSION: The findings of the present study confirm the multifactorial etiology of NE and identify several associated factors. Integrating these factors into screening and management programs may improve early identification and lead to more effective, tertiary care-specific preventive and therapeutic interventions.

Humans↗

PubMed2000

Fatigue in persons with renal failure who require maintenance haemodialysis.

Fatigue is a highly prevalent symptom experienced by persons who live with chronic illness, including those with renal failure who require maintenance haemodialysis. Fatigue, however, is a non-specific and invisible symptom and is a phenomenon that is poorly understood by health care professionals. This study examined the symptom of fatigue as experienced by a group of 39 adult haemodialysis patients. The theory of unpleasant symptoms formed the conceptual framework for the study. A descriptive correlational design was utilized to examine fatigue from an inductive approach, considering relevant physiological, psychological and situational variables based on a review of the literature. Data were collected using a structured self-report questionnaire and biochemical data from retrospective monthly blood tests. The results of the study indicated that high levels of fatigue are experienced, with correspondingly low levels of vitality, in all the areas measured - general fatigue, physical fatigue, reduced motivation, reduced activity and mental fatigue, by adult haemodialysis patients. Individual variation was noted in the dimensions of fatigue predominantly expressed. Fatigue was significantly associated with the presence of symptoms such as sleep problems, poor physical health status and depression. No associations between fatigue and the biochemical and situational variables measured were noted. Further examination of the data revealed complex relationships between the physiological and psychological factors examined. Depression was significantly associated with physical health status, sleep problems, symptoms and anxiety. Correlations were also noted between symptoms and poor physical functioning, sleep problems and depression. Based on the results, a revised version of the theory of unpleasant symptoms relating to fatigue is presented.

Activities of Daily Living↗

PubMed1997

Epidemiologic study of sleep quality and troubles in French secondary school adolescents.

BACKGROUND: The purpose of the study was to assess the prevalence and correlates of sleep problems in adolescents. METHODS: A total of 763 students chosen at random among the 15 secondary schools of a French département were given a self-report questionnaire. RESULTS: As much as 40.8% reported at least one of the five sleep disturbances we studied including difficulties falling asleep and staying asleep, a need for more sleep, early awakenings, and chronic sleeping pill intake. These sleep problems were highly related to various personal and family disorders. Discriminant analysis for categorical data pointed to a consistent but not significant descriptive profile accounting for sleep problems in these students. Suicide, weight concerns, and stimulant abuse were the most informative personal correlates as parts of this profile. CONCLUSION: These findings suggest that the complaint of poor sleep should be regarded with special care in adolescents as a possibly meaningful and sensitive sign of severe family or personal disruption.

Adolescent↗

PubMed1997

[Sleep behavior in the first 3 years of life].

A review of the literature on sleeping "disorders" in infants and toddlers shows that sleep problems are very common. We report the results of a German multicenter epidemiological study on a birth cohort (N = 1314). The children had medical examinations at 4 weeks, 3 months, 6 months, 1 year, 18 months, 2 years and 3 years. Most of the information on the sleeping behavior was gathered by structured interview and questionnaires. This paper gives information on the prevalence and the persistence of sleep problems in one to three year old children in Germany. Statistical analysis of correlations between breastfeeding and sleep and the place of sleep are reported. The consequences of sleep problems on the family overall well-being are also examined.

Child, Preschool↗

PubMed1999

Widespread pain and neck pain in schoolchildren. A prospective one-year follow-up study.

The aims of this study were to prospectively follow up population-based cohorts of children with widespread pain, children with neck pain and pain-free children, in order to evaluate 1-y changes in pain symptoms and to evaluate predictors for persistent widespread pain and for the change of neck pain to widespread pain. A structured pain questionnaire, the Children's Depression Inventory, and a sleep questionnaire were completed by the pre-adolescent cohorts, and clinical evaluation with tender point palpation and pain threshold measurements was carried out in both years. The Child Behavior Checklist, the Teacher's Report Form and a sociodemographic questionnaire were completed at baseline. More children in the 2 pain cohorts reported pain at follow-up than did controls (p < 0.0001). Children with persistent widespread pain had lower pain thresholds compared with those whose pain classification changed. In the neck pain group, 19 (20.4%) reported widespread pain at follow-up. Although depressive symptoms and sleep problems were associated with the change of neck pain to widespread pain, neither they nor other measured factors showed independent explanatory power in multiple logistic regression analysis. In conclusion, fluctuation of pain symptoms occurred mainly among pain cohorts. Depressive and sleep problems may have an effect on the spreading of regional neck pain to widespread pain. Pain threshold measurement and evaluation of depressive and sleep problems may be useful tools for secondary prevention of musculoskeletal pain in pre-adolescents.

Adolescent↗

PubMed2000

Sleep complaints and depression in an aging cohort: A prospective perspective.

OBJECTIVE: Most research on the association between sleep disturbances and depression has looked at cross-sectional data. The authors used two waves of data from a panel study of community residents aged 50 years or more to investigate this issue prospectively. METHOD: Data on symptoms of major depressive episodes and sleep problems were examined for a subgroup of the 1994 and 1995 surveys of the Alameda County (California) Study (N=2,370). The authors examined the effects of age, gender, education, marital status, social isolation, functional impairment, financial strain, and alcohol use. Depression was measured with 12 items that covered the DSM-IV diagnostic criteria for major depressive episodes, including insomnia and hypersomnia. RESULTS: The prevalences were 23. 1% for insomnia and 6.7% for hypersomnia in 1994. Sleep was a significant correlate of depression, as were being female, older age, social isolation, low education, financial strain, and functional impairment. When sleep problems and depression were examined prospectively, with controls for the effects of the other variables, sleep problems in 1994 predicted depression in 1995. However, other symptoms of major depressive episodes-anhedonia, feelings of worthlessness, psychomotor agitation/retardation, mood disturbance, thoughts of death-were much stronger predictors of future major depression. CONCLUSIONS: Sleep disturbance and other symptoms that are diagnostic for major depression are strongly associated with the risk of future depression. Sleep disturbance appears to be a less important predictor of depression. More epidemiologic research is needed on the relative contributions of the range of depressive symptoms to the risk of clinical depression.

Age Factors↗

PubMed1989

An update on sleep disorders.

Sleep disorders are so common that approximately 38% of the general population complains about a current sleep problem and 52% complains about a current or past sleep problem. Psychiatric factors are prominent in virtually all sleep disorders, either as primary factors (insomnia and adult parasomnias) or as significant secondary consequences (sleep apnea and narcolepsy). The authors describe normal sleep; delineate the prevalence of sleep disorders, both those associated with psychiatric disturbance and those of organic etiology; and outline procedures for evaluation and treatment, which is multidimensional and comprises general measures, psychotherapy, and, when indicated, pharmacotherapy.

Adult↗

PubMed2005

Pain severity in diabetic peripheral neuropathy is associated with patient functioning, symptom levels of anxiety and depression, and sleep.

Our goal was to evaluate pain severity, pain-related interference with function, sleep impairment, symptom levels of anxiety and depression, and quality of life among patients with painful diabetic peripheral neuropathy (DPN). Participants in a burden of illness survey (n = 255) completed the modified Brief Pain Inventory-DPN (BPI-DPN), MOS Sleep Scale, Hospital Anxiety and Depression Scale (HADS), Short Form Health Survey-12v2 (SF-12v2), and the EuroQoL (EQ-5D). Patients were 61 +/- 12.8 years old (51.4% female), had diabetes for 12 +/- 10.3 years and painful DPN for 6.4 +/- 6.4 years. Average and Worst Pain scores (BPI-DPN, 0-10 scales) were 5.0 +/- 2.5 and 5.6 +/- 2.8. Pain substantially interfered (>or=4 on 0-10 scales) with walking ability, normal work, sleep, enjoyment of life, mood, and general activity. Moderate to severe symptom levels of anxiety and depression (HADS-A and HADS-D scores >or=11 on 0-21 scales) occurred in 35% and 28% of patients, respectively. Patients reported greater sleep problems compared with the general U.S. population and significant impairment in both physical and mental functioning (SF-12v2) compared with subjects with diabetes. The mean EQ-5D utility score was 0.5 +/- 0.3. Greater pain levels in DPN (mild to moderate to severe) corresponded with higher symptom levels of anxiety and depression, more sleep problems, and lower utility ratings and physical and mental functioning, (all Ps < 0.01). Painful DPN is associated with decrements in many aspects of patients' lives: physical and emotional functioning, affective symptoms, and sleep problems. The negative impact is higher in patients with greater pain severity.

Adolescent↗

PubMed2006

[Prevalence and associated factors of excessive daytime sleepiness in adults].

PURPOSE: The purpose of the present study was to identify prevalence of excessive daytime sleepiness(EDS) and its associations with sleep habits, sleep problems, depression, subjective health status and obesity in community dwelling adults. METHOD: Data was collected from adults aged 20-59 years by random sampling. Subjects completed a questionnaire which was composed of the Epworth Sleepiness Scale, Center for Epidemiologic Studies Depression Scale, and questions that included items about sleep habits, sleep problems, subjective health status and sociodemographic characteristics. Height and weight were measured for calculation of body mass index. The statistical analyses was based on 3,302 adults (51.5% males and 48.5% females). Descriptive statistics, univariate logistic regression and multiple logistic regression were used. RESULT: The prevalence of EDS was 17.1%. Multiple logistic regression showed that the associated factors of EDS were depression, obesity, dissatisfaction with sleep time, irregular sleep, and habitual snoring. Depression was the most significant associated factor(adjusted odds ratio for severe depression=2.27, 95% Confidence Interval=1.73-2.96). CONCLUSION: EDS is a common symptom in adults. Our finding suggested that persons with a complaint of EDS should be completely assessed for depression and obesity as well as sleep problems.

Activities of Daily Living↗

PubMedDate not supplied

Repetitive behaviors in autism: relationships with associated clinical features.

Relationships between repetitive behaviors (RBs) and associated clinical features (i.e., cognitive and adaptive functioning levels, sleep problems, medication use, and other behavioral problems) were examined in two groups (High nonverbal IQ > or = 97 versus Low nonverbal IQ < or = 56) of children with autism spectrum disorders (n = 14; mean age = 10 years, 7 months). For the group as a whole, nonverbal cognitive ability (NVIQ) (as measured by the Leiter-R), adaptive functioning level, the presence of sleep problems, and three scales of the Aberrant Behavior Checklist (ABC) (Irritability, Lethargy, and Hyperactivity) were highly correlated with total RB scores on the Repetitive Behavior Scale-Revised (RBS-R). After controlling for NVIQ, adaptive level, sleep problems, and two scales of the ABC (Irritability and Lethargy) were not significantly associated with RB scores. However, there remained a significant positive correlation between the presence of RBs and the Hyperactivity scale of the ABC. Parent ratings of their stress levels and the presence of RBs in their children were highly correlated. The relationship between RBs and associated clinical features in autism is complex and future studies should control for cognitive ability when examining the direct and indirect relationships of these variables with RBs.

Adaptation, Psychological↗

PubMed2006

Association between hot flashes, sleep complaints, and psychological functioning among healthy menopausal women.

Self-report data suggest that sleep hot flashes among menopausal women are associated with sleep problems and in turn impaired psychological functioning. However, few studies have examined these relations with physiologic hot flash measures. A total of 41 perimenopausal and postmenopausal women with daily hot flashes underwent nighttime sternal skin conductance monitoring to quantify hot flashes. Participants completed sleep diaries; the Sleep-Wake Experience List (van Diest, 1990); and depression, anxiety, and daily stress measures. Participants experienced a median of 2 physiologically monitored and 1 reported sleep hot flash nightly. Although sleep complaints were significantly and positively associated with psychological functioning, neither sleep complaints nor psychological functioning was significantly related to frequency of physiologically monitored sleep hot flashes. Conversely, results indicate an association between reported sleep hot flashes and acute sleep problems. The frequency of physiologically monitored sleep hot flashes, as opposed to reported sleep hot flashes, may be independent of problems with sleep and mood among menopausal women.

Emotions↗

PubMed2003

Old people in pain: a comparative study.

To investigate the prevalence of pain in older people (75+), compare those in pain to those without regarding demographics, social network, functional limitations, fatigue, sleeping problems, depressed mood and quality of life (QOL), and identify variables associated with pain, a cross-sectional, prospective survey was conducted in an age-stratified sample of 4,093 people aged 75-105 years old. Those reporting pain (n=1,654) were compared with those who did not (n=2,439). Pain was more common with higher age, as were all complaints among those in pain and among those without, except sleeping problems. Lower QOL was found with higher age, as well as with pain. Pain was found to be associated with functional limitations, fatigue, sleeping problems, depressed mood, and QOL. These data highlight the importance of identifying old people in pain. Those who are older and those affected by pain are at greater risk of also being troubled by other problems, such as functional limitations and lowered QOL.

Activities of Daily Living↗

PubMed2006

Sleep in children with developmental disabilities.

Sleep disturbances are more common in children and adolescents with developmental disabilities than in non-disabled individuals. Given the potential benefit of improved sleep for a patient's daytime functioning, it is important that clinicians who work with this population query caretakers about sleep problems and offer intervention, whether behavioral or pharmacological. Sleep problems in children with developmental disorders often fail to improve spontaneously, as may be the case in typically developing children, which can lead to further distress, disappointment, and frustration for families. Attempting to resolve sleep difficulties as they arise can benefit not only the patient, but also the patient's caretakers.

Adolescent↗

PubMed1994

Health of female shiftworkers in Singapore.

More than 200,000 persons in Singapore work shifts. Over half of these shiftworkers are females. With the continued emphasis on capital-intensive industries and growing demand for "round-the-clock" services, shiftwork is increasingly an economic necessity for more and more industries and a way of life for many Singaporeans. It is generally accepted that about 20% of those who start shiftwork may find it difficult to continue in such work, usually for social rather than medical reasons. For those who continue on shiftwork, concerns have been raised regarding possible health effects, such as increased incidence of digestive disorders and ulcers, chronic fatigue and cardiovascular disorders. In the case of female shiftworkers, there is also the concern that the added responsibilities of looking after the home and young children may further aggravate sleep problems associated with shiftwork, thus adversely affecting their health. So far, our own studies of female electronics workers on 8-hour as well as 12-hour shift schedules indicate no serious long-term health effects. The study subjects had been employed in such work for at least over a year, some as long as 17 years and 6 years, respectively. Except for complaints of sleep problems and tiredness among some rotating shiftworkers, no significant differences in symptom prevalence, blood pressure or sickness absence were found between the shift and day workers. While the findings are reassuring, further studies may be needed to determine if preventive measures can be taken to minimise the common complaints of sleep problems and tiredness, particularly among rotating shiftworkers.

Electronics↗

PubMedDate not supplied

Behaviour problems in children with learning disabilities: to what extent do they exist and are they a problem?

The parents of 68 young children with learning disabilities were interviewed to assess the number and type of behaviour problems that their child exhibited. Parents' perceptions of their ability to cope with the behaviours were sought. The average number of behaviour problems was 7.4 per child, with poor concentration and sleep problems occurring most frequently. Fifty-seven per cent of parents who reported that their child hurt themself felt unable to cope with those behaviours. Scores of parents' perceived coping skills and malaise were associated with the number of behaviour problems. Parents who reported that their child hurt themself, hurt others or had a sleep problem were likely to have a higher malaise score.

Adaptation, Psychological↗