Sleep problems and internet addiction among children and adolescents: a longitudinal study

Although the literature has documented associations between sleep problems and internet addiction, the temporal direction of these relationships has not been established. The purpose of this study is to evaluate the bidirectional relationships between sleep problems and internet addiction among children and adolescents longitudinally. A four‐wave longitudinal study was conducted with 1253 children and adolescents in grades 3, 5 and 8 from March 2013 to January 2014. The sleep problems of the student participants were measured by parental reports on the Sleep Habit Questionnaire, which catalogues early insomnia, middle insomnia, disturbed circadian rhythm, periodic leg movements, sleep terrors, sleepwalking, sleep talking, nightmares, bruxism, snoring and sleep apnoea. The severity of internet addiction was measured by students’ self‐reports on the Chen Internet Addiction Scale. Based on the results of time‐lag models, dyssomnias (odds ratio = 1.31), especially early and middle insomnias (odds ratio = 1.74 and 2.24), sequentially predicted internet addiction, and internet addiction sequentially predicted disturbed circadian rhythm (odds ratio = 2.40), regardless of adjustment for gender and age. This is the first study to demonstrate the temporal relationship of early and middle insomnia predicting internet addiction, which subsequently predicts disturbed circadian rhythm. These findings imply that treatment strategies for sleep problems and internet addiction should vary according to the order of their occurrence.     

团体辅导对网络成瘾大学生网络使用及学习管理的改善效果

目的:探索团体辅导对网络成瘾大学生网络使用及学习管理的干预效果.方法:选取网络成瘾大学生31名(皆为男性),随机分入团体辅导组(n=16)和监管学习对照组(n=15),对团体辅导组学生进行每周1次共12次团体辅导,对照组学生每周参加1次共12次的监管自习,在干预前后分别对两组施测网络成瘾量表(IAT),并用日均网络使用时间、日均自主学习时间以及期末学分通过率进行评估.结果:团体辅导后,学生的IAT得分和日均上网-学习时间比(每日网络时间/每日自主学习时间)均低于对照组[(48.5±6.2)vs.(81.2±2.1),(0.8±0.2)vs.(3.6±1.7)],也低于本组基线评分[(82.4±1.7),(3.9±1.6)],而期末学分通过率(0.8±0.1)高于对照组(0.4±0.2)和本组基线水平(0.3±0.1)(均P＜0.01);对照组仅期末学分通过率高于其基线(0.3±0.1,P＜0.05),其他指标两次测评差异均无统计学意义.结论:团体辅导可改善大学生的网络成瘾症状和促进其自主学习.     

The contribution of dispositional optimism to understanding insomnia symptomatology: Findings from a cross‐sectional population study in Austria

Attitudes and expectations of people towards their lives are essential to future health outcomes. Growing evidence has linked dispositional optimism to beneficial health outcomes, such as exceptional longevity, healthy aging and better sleep quality. We describe the association between dispositional optimism and chronic insomnia, considering potential mediators, in the Austrian Sleep Survey (N = 1,004), a population‐based cross‐sectional study conducted in 2017. Optimism was measured using the validated Life Orientation Test‐Revised, and four different definitions were used to assess chronic insomnia. Three definitions were based on the criteria of chronic insomnia according to the International Classification of Sleep Disorders (3rd edn). Age‐ and multivariable‐adjusted logistic regression models were used to calculate odds ratios (OR) and 95% confidence intervals (CIs). Among Austrians who were more optimistic, chronic insomnia risk was lower compared with those less optimistic (middle versus bottom tertile of optimism score: OR = 0.39, 95% CI, 0.22–0.70; and top versus bottom tertile: OR = 0.28, 95% CI, 0.14–0.54; p‐trend < .001). Results were similar for all four definitions of insomnia, and differed slightly between men and women. Happiness, depression and health status confounded the association, whereas lifestyle did not. Promoting dispositional optimism could represent a simple and accessible strategy to improve sleep quality and lower insomnia risk, with downstream beneficial health effects. Further research is needed to clarify the prevention potential of interventions targeting this mental trait.     

穴位敷贴联合抗抑郁药对抑郁症患者失眠症状的疗效

目的:观察穴位敷贴联合药物治疗对抑郁症的疗效和安全性,尤其是对患者失眠症状的改善程度.方法:将162例抑郁症患者随机分成研究组(n=86)和对照组(n=76),研究组接受穴位敷贴治疗联合抗抑郁药物治疗,对照组接受抗抑郁药物治疗,治疗持续6周,基线及治疗第1,2,6周末用同时用汉密尔顿抑郁量表(Hamilton Depression scales,HAMD-17)以及汉密尔顿焦虑量表(Hamilton Anxiety Scale,HAMA)评定患者的抑郁和焦虑严重程度,用匹兹堡睡眠质量指数(Pittsburgh Sleep Quality Index,PSQI)评定患者的失眠严重程度,同时用副反应量表(Treatment Emergent Symptom Scale,TESS)和实验室检查评估治疗安全性.结果:治疗6周末研究组和对照组的HAMD评分分别为8.62±2.90,10.14±3.38,均较治疗前显著下降,研究组显著低于对照组,差异有统计学意义(t=3.0805,P=0.0024);同样治疗6周末研究组和对照组的HAMA评分分别为6.93±2.19,10.30±3.55,均较治疗前显著下降,研究组显著低于对照组,差异有统计学意义(t=7.3614,P<0.001);治疗6周末研究组和对照组的PSQI评分分别为5.23±1.90,8.14±3.11,均较治疗前显著下降,且研究组显著低于对照组,差异有统计学意义(t=7.2771,P<0.001).研究组皮肤瘙痒显著多于对照组,失眠显著少于对照组,其他方面没有显著差异.结论:穴位敷贴联合抗抑郁药治疗对抑郁症安全有效,同时可以显著改善患者的失眠症状.     

Link between insomnia and perinatal depressive symptoms: A meta‐analysis

Evidence shows the possible link between insomnia and perinatal depressive symptoms. In order to find a convergent quantitative answer, we collected data via the search of Medline, EMBASE and reference tracking, which included nine studies (a total sample of 1,922 women). An aggregate effect size estimate (correlation coefficient) was generated using the comprehensive meta‐analysis software. For the meta‐analytic procedure, a random effects model was set a priori. Moderating factors, including study design, method of assessment of depression, geographical origin of data, publication year, mean age, % married, breastfeeding rate, quality and type of data, % primiparous and history of depression, were examined via categorical or univariate mixed‐effects (method of moments) meta‐regression methods. Heterogeneity and publication bias were examined using standard meta‐analytic approaches. We found a significant, medium‐size relationship between insomnia and perinatal depressive symptoms (point estimate, 0.366; 95% confidence interval [CI], 0.205–0.508; p < 0.001; n = 9) and this was significantly heterogeneous (Q, 118.77; df, 8; p < 0.001; I², 93.26%). The effect size estimate was significant for studies reporting no history of depression (point estimate, 0.364; 95% CI, 0.035–0.622; p < 0.05; n = 5) and for study design. With meta‐regression, no moderating factor (age, marriage rate, breastfeeding rate, pregnancy history or publication year) significantly mediated the effect size estimate. The depression assessment scale used, but not other categorical variables, explained the magnitude of heterogeneity. We found that insomnia during the perinatal period is associated with depressive symptoms, which warrants screening pregnant mothers for insomnia and depression.     

网络成瘾青少年事件相关电位P300的溯源研究

目的：利用偶极子溯源分析方法,探讨网络成瘾青少年事件相关电位（ERP）P300成分的脑内起源。方法：网络成瘾青少年和正常对照者各10例,采用视觉Oddball范式对被试进行刺激以诱发ERPP300成分,利用偶极子溯源分析方法对P300的脑内起源进行定位,并将溯源后P300的起源位置和fMRI中与网络成瘾相关的脑区进行对比,了解两者的相关性。结果：网络成瘾组与对照组相比,ERPP300波的峰潜伏期缩短、波幅升高;总平均P300电位波溯源定位在扣带回中后部,fMRI中发现网络成瘾青少年在接受网络内容刺激后扣带回中后部也出现明显的激活。结论：网络成瘾青少年P300电位的脑内起源主要位于扣带回中后部,该部可能参与了网络成瘾的形成。     

Sleep patterns and insomnia among adolescents: a population‐based study

The aim of the current study was to examine sleep patterns and rates of insomnia in a population‐based study of adolescents aged 16–19 years. Gender differences in sleep patterns and insomnia, as well as a comparison of insomnia rates according to DSM‐IV, DSM‐V and quantitative criteria for insomnia (Behav. Res. Ther., 41 , 2003, 427), were explored. We used a large population‐based study in Hordaland county in Norway, conducted in 2012. The sample included 10 220 adolescents aged 16–18 years (54% girls). Self‐reported sleep measurements included bedtime, rise time, time in bed, sleep duration, sleep efficiency, sleep onset latency, wake after sleep onset, rate and frequency and duration of difficulties initiating and maintaining sleep and rate and frequency of tiredness and sleepiness. The adolescents reported short sleep duration on weekdays (mean 6:25 hours), resulting in a sleep deficiency of about 2 h. A majority of the adolescents (65%) reported sleep onset latency exceeding 30 min. Girls reported longer sleep onset latency and a higher rate of insomnia than boys, while boys reported later bedtimes and a larger weekday–weekend discrepancy on several sleep parameters. Insomnia prevalence rates ranged from a total prevalence of 23.8 (DSM‐IV criteria), 18.5 (DSM‐V criteria) and 13.6% (quantitative criteria for insomnia). We conclude that short sleep duration, long sleep onset latency and insomnia were prevalent in adolescents. This warrants attention as a public health concern in this age group.     

Insomnia and accidents: cross‐sectional study (EQUINOX) on sleep‐related home,work and car accidents in 5293 subjects with insomnia from 10 countries

The link between sleepiness and the risk of motor vehicle accidents is well known, but little is understood regarding the risk of home, work and car accidents of subjects with insomnia. An international cross‐sectional survey was conducted across 10 countries in a population of subjects with sleep disturbances. Primary care physicians administered a questionnaire that included assessment of sociodemographic characteristics, sleep disturbance and accidents (motor vehicle, work and home) related to sleep problems to each subject. Insomnia was defined using the International Classification of Sleep Disorders (ICSD‐10) criteria. A total of 5293 subjects were included in the study, of whom 20.9% reported having had at least one home accident within the past 12 months, 10.1% at least one work accident, 9% reported having fallen asleep while driving at least once and 4.1% reported having had at least one car accident related to their sleepiness. All types of accident were reported more commonly by subjects living in urban compared to other residential areas. Car accidents were reported more commonly by employed subjects, whereas home injuries were reported more frequently by the unemployed. Car accidents were reported more frequently by males than by females, whereas home accidents were reported more commonly by females. Patients with insomnia have high rates of home accidents, car accidents and work accidents related to sleep disturbances independently of any adverse effects of hypnotic treatments. Reduced total sleep time may be one factor explaining the high risk of accidents in individuals who complain of insomnia.     

Prevalence, course, and comorbidity of insomnia and depression in young adults

STUDY OBJECTIVES: (1) To describe the prevalence and prospective course of insomnia in a representative young-adult sample and (2) to describe the cross-sectional and longitudinal associations between insomnia and depression. DESIGN: Longitudinal cohort study. SETTING: Community of Zurich, Switzerland. PARTICIPANTS: Representative stratified population sample. INTERVENTIONS: None. MEASUREMENTS AND RESULTS: The Zurich Study prospectively assessed psychiatric, physical, and sleep symptoms in a community sample of young adults (n=591) with 6 interviews spanning 20 years. We distinguished 4 duration-based subtypes of insomnia: 1-month insomnia associated with significant distress, 2- to 3-week insomnia, recurrent brief insomnia, and occasional brief insomnia. The annual prevalence of 1-month insomnia increased gradually over time, with a cumulative prevalence rate of 20% and a greater than 2-fold risk among women. In 40% of subjects, insomnia developed into more chronic forms over time. Insomnia either with or without comorbid depression was highly stable over time. Insomnia lasting 2 weeks or longer predicted major depressive episodes and major depressive disorder at subsequent interviews; 17% to 50% of subjects with insomnia lasting 2 weeks or longer developed a major depressive episode in a later interview. "Pure" insomnia and "pure" depression were not longitudinally related to each other, whereas insomnia comorbid with depression was longitudinally related to both. CONCLUSIONS: This longitudinal study confirms the persistent nature of insomnia and the increased risk of subsequent depression among individuals with insomnia. The data support a spectrum of insomnia (defined by duration and frequency) comorbid with, rather than secondary to, depression.     

青少年手机成瘾与冲动性相关性的meta分析

目的:了解青少年手机成瘾与冲动性的相关性。方法:检索中国知网、万方、SinoMed、维普、Web of Science、Cochrane、Pubmed、Sciencedirect等中外文数据库,收集并筛选相关文献进行meta分析。结果:纳入了11篇文献,共12312例被试,包括5818例男性和6494例女性。Meta分析显示,青少年的手机成瘾得分与冲动性得分之间呈正相关(r=0.32,P<0.001)。亚组分析结果显示,学生类型和测.量工具不同,并不会干扰二者间关系的稳定性(Q=3.05、0.87,P>0.05),而研究的取样地区则调节了手机成瘾与冲动性的关系(Q=16.29,P<0.01),来自中部地区的样本,二者间的正向关系更为紧密(r=0.43)。结论:本研究提示青少年的手机成瘾与冲动性存在正相关关系。     

Prevalence and management of chronic insomnia in Swiss primary care: Cross‐sectional data from the “Sentinella” practice‐based research network

We investigated the prevalence and treatment of patients with chronic insomnia presenting to Swiss primary care physicians (PCPs) part of “Sentinella”, a nationwide practice‐based research network. Each PCP consecutively asked 40 patients if they had sleep complaints, documented frequency, duration, comorbidities, and reported ongoing treatment. We analysed data of 63% (83/132) of the PCPs invited. The PCPs asked 76% (2,432/3,216) of included patients about their sleep (51% female); 31% (761/2,432) of these had had insomnia symptoms; 36% (875/2,432) had current insomnia symptoms; 11% (269/2,432) met the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM‐5) criteria for chronic insomnia (61% female). In all, 75% (201/269) of patients with chronic insomnia had comorbidities, with 49% (99/201) reporting depression. Chronic insomnia was treated in 78% (209/269); 70% (188/268) took medication, 38% (102/268) benzodiazepines or benzodiazepine receptor agonists, 32% (86/268) took antidepressants. Only 1% (three of 268) had been treated with cognitive behavioural therapy for insomnia (CBT‐I). A third of patients presenting for a non‐urgent visit in Swiss primary care reported insomnia symptoms and 11% met the DSM‐5 criteria for chronic insomnia. Hypnotics were the most common treatment, but almost no patients received first‐line CBT‐I. Reducing the burden of insomnia depends on disseminating knowledge about and access to CBT‐I, and encouraging PCPs to discuss it with and offer it as a first‐line treatment to patients with chronic insomnia.     

The effect of school-based cervical cancer education on perceptions towards human papillomavirus vaccination among Hong Kong Chinese adolescent girls

Objective

To evaluate the effects of school-based cervical cancer education on Hong Kong Chinese adolescent girls.

Methods

Adolescent girls (n = 953) in local secondary schools attended a tailored educational program on cervical cancer prevention. Self-administered questionnaires were used before and after the program to measure its effects on participants’ knowledge, attitude and perceived social norms towards human papillomavirus (HPV) vaccination and their intention to be HPV vaccinated.

Results

Before the program, HPV vaccine acceptance was favorable but relevant knowledge was low. After the program, participants had greater knowledge and a more positive attitude (both p < 0.001), with more girls anticipating family (41.6% before vs. 58.9% after) and peer support (32.8% before vs. 56.9% after). There were 11.3% more girls who indicated an intention to accept the vaccine afterward. More knowledge, a more positive attitude and perceived support from significant others predicted a stronger intention to be HPV vaccinated.

Conclusion

The educational program had a positive impact on participants’ perceptions towards HPV vaccination and their intention to be vaccinated.

Practice implications

School-based cervical cancer education is a viable means to meet the substantial educational needs of adolescents. Promotion of HPV vaccination should also include educating and influencing perceptions of families and peers.     

The exploratory power of sleep effort,dysfunctional beliefs and arousal for insomnia severity and polysomnography‐determined sleep

Differences between subjective sleep perception and sleep determined by polysomnography (PSG) are prevalent, particularly in patients with primary insomnia, indicating that the two measures are partially independent. To identify individualized treatment strategies, it is important to understand the potentially different mechanisms influencing subjective and PSG‐determined sleep. The aim of this study was to investigate to what extent three major components of insomnia models, i.e. sleep effort, dysfunctional beliefs and attitudes about sleep, and presleep arousal, are associated with subjective insomnia severity and PSG‐ determined sleep. A sample of 47 patients with primary insomnia according to DSM‐IV criteria and 52 good sleeper controls underwent 2 nights of PSG and completed the Glasgow Sleep Effort Scale, the Dysfunctional Beliefs and Attitudes about Sleep Scale, the Pre‐Sleep Arousal Scale and the Insomnia Severity Index. Regression analyses were conducted to investigate the impact of the three predictors on subjective insomnia severity and PSG‐ determined total sleep time. All analyses were adjusted for age, gender, depressive symptoms and group status. The results showed that subjective insomnia severity was associated positively with sleep effort. PSG‐determined total sleep time was associated negatively with somatic presleep arousal and dysfunctional beliefs and attitudes about sleep. This pattern of results provides testable hypotheses for prospective studies on the impact of distinct cognitive and somatic variables on subjective insomnia severity and PSG‐determined total sleep time.     

Dynamic features of placebo effects addressing persistent insomnia disorder: A meta‐analysis of placebo‐controlled randomized clinical trials

It has been accepted knowledge that placebo effects have been significant in insomnia clinical trials. However, the dynamic features of placebo effects have not been clarified. Our aim was therefore to conduct a meta‐analysis of placebo‐controlled randomized clinical trials to characterize the dynamic features of placebo effects addressing persistent insomnia disorder. We performed a comprehensive literature search for randomized, placebo‐controlled, double‐blind clinical trials evaluating the efficacy of therapeutic regimens addressing persistent insomnia disorder. We pooled separate effect size estimates (Hedge's g) of placebo and regimen conditions across trials for outcome measures, and multilevel mixed‐effects models were used to explore potential sources of heterogeneity. The placebo effects were significant and robust to improve the symptoms of insomnia, and subjective measures were significantly smaller than objective measures (p < .001), but placebo response rates were nearly identical between subjective and objective measures. The overall placebo effects were influenced by publication year (p = .015), treatment duration (p = .010), sample size (p < .001) and therapeutic regimen (p < .001). Placebo effects showed a diphasic feature within treatment duration: initially a decrease and subsequently being stable; a sustained decline trend after withdrawals; and a steady‐to‐upward trend for a mixed therapeutic regimens in a large‐scale period over decades. The dynamic features of placebo effects addressing persistent insomnia disorder may lead to the development and validation of dosing strategies that require less medication exposure to maintain clinical effects.     

An approach to understanding sleep and depressed mood in adolescents: person‐centred sleep classification

Depressive mood in youth has been associated with distinct sleep dimensions, such as timing, duration and quality. To identify discrete sleep phenotypes, we applied person‐centred analysis (latent class mixture models) based on self‐reported sleep patterns and quality, and examined associations between phenotypes and mood in high‐school seniors. Students (n = 1451; mean age = 18.4 ± 0.3 years; 648 M) completed a survey near the end of high‐school. Indicators used for classification included school night bed‐ and rise‐times, differences between non‐school night and school night bed‐ and rise‐times, sleep‐onset latency, number of awakenings, naps, and sleep quality and disturbance. Mood was measured using the total score on the Center for Epidemiologic Studies‐Depression Scale. One‐way anova tested differences between phenotype for mood. Fit indexes were split between 3‐, 4‐ and 5‐phenotype solutions. For all solutions, between phenotype differences were shown for all indicators: bedtime showed the largest difference; thus, classes were labelled from earliest to latest bedtime as ‘A’ (n = 751), ‘B’ (n = 428) and ‘C’ (n = 272) in the 3‐class solution. Class B showed the lowest sleep disturbances and remained stable, whereas classes C and A each split in the 4‐ and 5‐class solutions, respectively. Associations with mood were consistent, albeit small, with class B showing the lowest scores. Person‐centred analysis identified sleep phenotypes that differed in mood, such that those with the fewest depressive symptoms had moderate sleep timing, shorter sleep‐onset latencies and fewer arousals. Sleep characteristics in these groups may add to our understanding of how sleep and depressed mood associate in teens.     

The effects of self-compassion components on shame-proneness in individuals with depression: An exploratory study

To date, there is no evidence regarding how self-compassion's components, self-kindness, common humanity and mindfulness could work as distinct interventions. Thus, the main objective of the present study was exploring the effects that the three separate components of self-compassion would have on shame-proneness levels in individuals with clinical depression. All the participants (n = 122) with a diagnostic of Major Depressive Disorder were randomized in four experimental groups: the self-kindness exercises group, the mindfulness exercises group, the common humanity one and the control group. Results indicated that levels of depression and shame-proneness, as measured by BDI-II, TOSCA-3 and ESS decreased from baseline to post-intervention, but no significant differences were observed between groups. Therefore, we cannot conclude that one self-compassion component is more efficient than the others, but the present study does offer, though, a strong starting point for more complex, future studies.