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Norell-Clarke, AnnikaORCID iD iconorcid.org/0000-0003-2008-0784
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Publikasjoner (10 av 46) Visa alla publikasjoner
Jansson-Fröjmark, M., Nordenstam, L., Alfonsson, S., Bohman, B., Rozental, A. & Norell-Clarke, A. (2024). Stimulus control for insomnia: A systematic review and meta-analysis. Journal of Sleep Research, 33(1), Article ID e14002.
Åpne denne publikasjonen i ny fane eller vindu >>Stimulus control for insomnia: A systematic review and meta-analysis
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2024 (engelsk)Inngår i: Journal of Sleep Research, ISSN 0962-1105, E-ISSN 1365-2869, Vol. 33, nr 1, artikkel-id e14002Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Stimulus control (SC) is commonly viewed as an evidence-based treatment for insomnia, but it has not been evaluated comprehensively with modern review and meta-analytic techniques. The aim of the current study was thus to perform a systematic review and meta-analysis of trials that examine the efficacy of stimulus control for insomnia. A systematic search for eligible articles and dissertations was conducted in six online bibliographic databases. The 11 included studies, with the majority published between 1978 and 1998, were randomised controlled and experimental studies in adults, comparing stimulus control for insomnia with passive and active comparators and assessing insomnia symptoms as outcomes. A random effects model was used to determine the standardised mean difference Hedge's g at post-treatment and follow-up for three sleep diary measures: the number of awakenings, sleep onset latency, and total sleep time. A test for heterogeneity was conducted, forest plots were produced, the risk of publication bias was estimated, and the study quality was assessed. In the trials identified, stimulus control resulted in small to large improvements on sleep onset latency and total sleep time, relative to passive comparators (g = 0.38-0.85). Compared with active comparators, the improvements following stimulus control were negligible (g = 0.06-0.30). Although methodological uncertainties were observed in the included trials, stimulus control appears to be an efficacious treatment for insomnia when compared with passive comparators and with similar effects to active comparators. More robust studies are, however, warranted before stronger conclusions are possible to infer.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2024
Emneord
adults, behaviour therapy, cognitive behaviour therapy, efficacy, sleep disturbance
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-96312 (URN)10.1111/jsr.14002 (DOI)001036569700001 ()37496454 (PubMedID)2-s2.0-85165917009 (Scopus ID)
Tilgjengelig fra: 2023-08-10 Laget: 2023-08-10 Sist oppdatert: 2024-02-22bibliografisk kontrollert
Störe, S. J., Tillfors, M., Wästlund, E., Angelhoff, C., Andersson, G. & Norell-Clarke, A. (2023). Mind, Body and Machine: Preliminary Study to Explore Predictors of Treatment Response After a Sleep Robot Intervention for Adults with Insomnia. Nature and Science of Sleep, 15, 567-577
Åpne denne publikasjonen i ny fane eller vindu >>Mind, Body and Machine: Preliminary Study to Explore Predictors of Treatment Response After a Sleep Robot Intervention for Adults with Insomnia
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2023 (engelsk)Inngår i: Nature and Science of Sleep, ISSN 1179-1608, Vol. 15, s. 567-577Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Introduction: The study aimed to explore characteristics of responders to a sleep robot intervention for adults with insomnia, and the likelihood that participants responded to the intervention. Methods: Data from the intervention and the control group in a randomized waitlist-controlled trial (n = 44) were pooled together after both had undergone the intervention. A repeated measures ANOVA and Friedman tests were used to explore changes over time. Differences in baseline characteristics between responders (n = 13), defined as a reduction of -5 on the Insomnia Severity Index from pre- to post-intervention, and non-responders (n = 31) were analyzed with t-tests and chi-square tests. Finally, logistic regression models were estimated.Results: Baseline anxiety was the only statistically significant difference between responders and non-responders (p = 0.03). A logistic regression model with anxiety and sleep quality as predictors was statistically significant, correctly classifying 83.3% of cases. Discussion: The results imply that people with lower anxiety and higher sleep quality at baseline are more likely to report clinically significant improvements in insomnia from the sleep robot intervention.

sted, utgiver, år, opplag, sider
Dove Medical Press, 2023
Emneord
anxiety, depression, insomnia, sleep, sleep diary, sleep robot, treatment response
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-96322 (URN)10.2147/NSS.S408714 (DOI)001031039800001 ()37465662 (PubMedID)2-s2.0-85170092331 (Scopus ID)
Tilgjengelig fra: 2023-08-10 Laget: 2023-08-10 Sist oppdatert: 2023-10-12bibliografisk kontrollert
Jansson-Fröjmark, M., Sandlund, C. & Norell-Clarke, A. (2023). Paradoxic Intention as an Adjunct Treatment to Cognitive Behavioral Therapy for Insomnia. Sleep Medicine Clinics, 18(1), 9-19
Åpne denne publikasjonen i ny fane eller vindu >>Paradoxic Intention as an Adjunct Treatment to Cognitive Behavioral Therapy for Insomnia
2023 (engelsk)Inngår i: Sleep Medicine Clinics, ISSN 1556-407X, E-ISSN 1556-4088, Vol. 18, nr 1, s. 9-19Artikkel i tidsskrift (Fagfellevurdert) Published
sted, utgiver, år, opplag, sider
Elsevier, 2023
Emneord
Cognitive behavior therapy, Insomnia, Paradoxic intention, Performance anxiety, Sleep intention
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-93849 (URN)10.1016/j.jsmc.2022.10.001 (DOI)36764790 (PubMedID)2-s2.0-85147817280 (Scopus ID)
Tilgjengelig fra: 2023-03-06 Laget: 2023-03-06 Sist oppdatert: 2023-03-06bibliografisk kontrollert
Störe, S. J., Norell-Clarke, A. & Jakobsson, N. (2023). Sleep researchers' rankings of sleep journals. Journal of Sleep Research, 32(3), Article ID e13756.
Åpne denne publikasjonen i ny fane eller vindu >>Sleep researchers' rankings of sleep journals
2023 (engelsk)Inngår i: Journal of Sleep Research, ISSN 0962-1105, E-ISSN 1365-2869, Vol. 32, nr 3, artikkel-id e13756Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The impact factor is used to rank the quality of scientific journals but has been criticised for a number of reasons. The aim of the study was to investigate sleep researchers' perceptions of sleep journals to determine whether subjective rankings of journals were in line with the journals' impact factors. Clarivate's Journal Citation Reports website was used to identify journals containing the words 'sleep' or 'dream' in the titles with an impact factor since 2018, resulting in 12 journals. A survey including questions about how the respondent would rank these journals (e.g., three most prestigious journals) was developed. A total of 122 sleep researchers completed the survey. Sleep, Sleep Medicine Reviews and Journal of Sleep Research were ranked as the three most prestigious sleep journals, in line with the impact factors of the journals. For the rest of the journals, the subjective rankings and impact factors did not correspond as much.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2023
Emneord
impact factor, sleep journal, survey
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-92562 (URN)10.1111/jsr.13756 (DOI)000877873900001 ()36316796 (PubMedID)2-s2.0-85141431569 (Scopus ID)
Tilgjengelig fra: 2022-11-29 Laget: 2022-11-29 Sist oppdatert: 2023-06-12bibliografisk kontrollert
Wallsten, D., Norell, A., Anniko, M., Eriksson, O., Lamourin, V., Halldin, I., . . . Tillfors, M. (2023). Treatment of worry and comorbid symptoms within depression, anxiety, and insomnia with a group-based rumination-focused cognitive-behaviour therapy in a primary health care setting: a randomised controlled trial. Frontiers in Psychology, 14, Article ID 1196945.
Åpne denne publikasjonen i ny fane eller vindu >>Treatment of worry and comorbid symptoms within depression, anxiety, and insomnia with a group-based rumination-focused cognitive-behaviour therapy in a primary health care setting: a randomised controlled trial
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2023 (engelsk)Inngår i: Frontiers in Psychology, E-ISSN 1664-1078, Vol. 14, artikkel-id 1196945Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

IntroductionRepetitive negative thinking (RNT) has been described as a maintaining transdiagnostic factor for psychopathology within the areas of depression, anxiety and insomnia. We investigated the effects of rumination-focused cognitive-behaviour therapy (RF-CBT) in a group format at a primary health care centre on symptoms of depression, anxiety, insomnia, RNT, and quality of life. The participants presented clinical symptom levels of worry and at least two disorders among anxiety disorders, major depressive disorder, and insomnia disorder.MethodsA randomised controlled superiority parallel arm trial was used. 73 participants were included and randomised in pairs to either group-administered RF-CBT or a waiting list condition. The primary outcomes were self-rated worry and transdiagnostic symptoms (depression, anxiety, and insomnia). Intention-to-treat analyses of group differences were conducted using linear mixed models. Adverse side effects and incidents were presented descriptively.ResultsGroup RF-CBT significantly reduced self-reported insomnia at post-treatment and self-reported insomnia and depression at the 2 month-follow-up, relative to the wait-list control group. There was no significant difference in change in RNT, anxiety, or quality of life.DiscussionThe current study suggests that group-administered RF-CBT may be effective for insomnia and potentially effective for depression symptomatology. However, the study was underpowered to detect small and moderate effects and the results should therefore be interpreted with caution.

sted, utgiver, år, opplag, sider
Frontiers Media S.A., 2023
Emneord
anxiety, depression, group therapy, insomnia, repetitive negative thinking, rumination-focused CBT
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-97097 (URN)10.3389/fpsyg.2023.1196945 (DOI)001068886700001 ()37744585 (PubMedID)2-s2.0-85171892073 (Scopus ID)
Tilgjengelig fra: 2023-10-19 Laget: 2023-10-19 Sist oppdatert: 2023-11-02bibliografisk kontrollert
Norell-Clarke, A., Jonsson, K., Blomquist, A., Ahlzén, R. & Kjellgren, A. (2022). A study of flotation-REST (restricted environmental stimulation therapy) as an insomnia treatment. Sleep Science, 15, 361-368
Åpne denne publikasjonen i ny fane eller vindu >>A study of flotation-REST (restricted environmental stimulation therapy) as an insomnia treatment
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2022 (engelsk)Inngår i: Sleep Science, ISSN 1984-0659, E-ISSN 1984-0063, Vol. 15, s. 361-368Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Objectives: Flotation-REST is a treatment for deep relaxation, where a person is contained in a stimuli-restricted environment and floats in water with high salt content. The aim was to investigate the effects from flotation-REST on people with insomnia diagnosis, as previous studies of flotation-REST have demonstrated some effects on sleep but have limitations regarding sample selections and sleep measures. Material and Methods: Six participants were recruited through an outpatient psychiatry clinic and posters on a university campus. All participants fulfilled criteria for insomnia diagnosis and four fulfilled criteria for major depressive disorder. Using a single case experimental design, daily changes were investigated on sleep logs regarding sleep onset latency (SOL), wake after sleep onset (WASO), total sleep time (TST), and sleep efficiency over the course of 12 sessions consisting of 45 min of flotation-REST. No other treatments were offered simultaneously. Questionnaire data on insomnia severity (the ISI) and depressive severity (the MADRS) were also collected. Results: Three participants improved on their most salient insomnia symptom (long SOL or WASO), and two improved on sleep efficiency. The improvements were maintained 2 months after treatment. Insomnia severity decreased for three patients, whereas depressive severity decreased for five. No changes in TST were found and two patients did not improve on any sleep measure. The two participants who benefitted the most were students in their 20s. Discussion: The results were mixed. Flotation-REST may be beneficial for young adults with sleep-onset insomnia but more research is warranted.

sted, utgiver, år, opplag, sider
Brazilian Sleep Association, 2022
Emneord
Flotation Therapy, Insomnia, Multiple Baseline, Relaxation, Sensory Deprivation, Sleep
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-89415 (URN)10.5935/1984-0063.20210012 (DOI)000762300700010 ()35371408 (PubMedID)2-s2.0-85125654126 (Scopus ID)
Tilgjengelig fra: 2022-04-08 Laget: 2022-04-08 Sist oppdatert: 2022-07-07bibliografisk kontrollert
Hedin, G., Norell-Clarke, A., Tonnesen, H., Westergren, A. & Garmy, P. (2022). Contributory factors for teen insomnia symptoms: A prospective cohort study in Sweden. Frontiers in Neuroscience, 16, Article ID 904974.
Åpne denne publikasjonen i ny fane eller vindu >>Contributory factors for teen insomnia symptoms: A prospective cohort study in Sweden
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2022 (engelsk)Inngår i: Frontiers in Neuroscience, ISSN 1662-4548, E-ISSN 1662-453X, Vol. 16, artikkel-id 904974Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

ObjectivesInsufficient sleep is a public health problem that impacts the mental and physical health of children and adolescents. Complaints of insomnia are particularly pervasive among adolescents. This longitudinal study investigates factors that contribute to teen insomnia symptoms. DesignFive-year prospective follow-up study. SettingSchool-based. ParticipantsA total of 522 children (49.8% girls) aged 9.4 +/- 1.3 years at baseline; 14.4 +/- 0.7 years at follow-up. MeasurementsThe dependent variable of insomnia symptoms at follow-up was assessed with the Minimal Insomnia Symptom Scale-Revised. The independent variables at baseline were the perceived family financial situation, tiredness at school, problems waking up, short sleep duration, sleeping difficulties, having a bedroom Television (TV), and time spent with a TV/computer. Multivariate binary logistic regression analyses were used to examine whether the independent variables at baseline predicted insomnia symptoms at follow-up. ResultsPerceived quite bad/very bad family financial situation (OR 3.1; CI 1.4-6.7) and short sleep duration (<10 h) (OR 2.3; CI 1.0-5.3) among girls at baseline were associated with insomnia symptoms at follow-up. Having problems waking up among boys at baseline was associated with insomnia symptoms at follow-up (OR 4.9; CI 1.6-14.4). ConclusionShort sleep duration, problems waking up, and perceived bad family financial situation during childhood were linked with adolescent insomnia symptoms. The sex-based differences in these associations warrant further investigation to effectively mitigate adolescent insomnia.

sted, utgiver, år, opplag, sider
Frontiers Media S.A., 2022
Emneord
adolescents, children, family affluence, insomnia, longitudinal study, sleep duration
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-91512 (URN)10.3389/fnins.2022.904974 (DOI)000824150700001 ()35837125 (PubMedID)2-s2.0-85133898476 (Scopus ID)
Tilgjengelig fra: 2022-08-19 Laget: 2022-08-19 Sist oppdatert: 2022-11-03bibliografisk kontrollert
Norell-Clarke, A., Turunen, J. & Hagquist, C. (2022). How do children and adolescents of separated parents sleep?: An investigation of custody arrangements, sleep habits, sleep problems, and sleep duration in Sweden. Sleep Medicine, 100(Suppl 1), S197-S197
Åpne denne publikasjonen i ny fane eller vindu >>How do children and adolescents of separated parents sleep?: An investigation of custody arrangements, sleep habits, sleep problems, and sleep duration in Sweden
2022 (engelsk)Inngår i: Sleep Medicine, ISSN 1389-9457, E-ISSN 1878-5506, Vol. 100, nr Suppl 1, s. S197-S197Artikkel i tidsskrift, Meeting abstract (Annet vitenskapelig) Published
sted, utgiver, år, opplag, sider
Amsterdam: Elsevier, 2022
HSV kategori
Forskningsprogram
Folkhälsovetenskap; Psykologi
Identifikatorer
urn:nbn:se:kau:diva-91572 (URN)10.1016/j.sleep.2022.05.531 (DOI)000832018700514 ()
Forskningsfinansiär
Forte, Swedish Research Council for Health, Working Life and Welfare, 2012-1736 & 2016-00511
Tilgjengelig fra: 2022-08-24 Laget: 2022-08-24 Sist oppdatert: 2022-08-25bibliografisk kontrollert
Hedin, G., Garmy, P., Norell-Clarke, A., Tonnesen, H., Hagell, P. & Westergren, A. (2022). Measuring insomnia among adolescents: Analysis of the Minimal Insomnia Symptom Scale (MISS) with the Rasch measurement model. Paper presented at The 16th World Sleep Congress, Rome, 11-16 March 2022. Sleep Medicine, 100(Suppl. 1), S130-S131
Åpne denne publikasjonen i ny fane eller vindu >>Measuring insomnia among adolescents: Analysis of the Minimal Insomnia Symptom Scale (MISS) with the Rasch measurement model
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2022 (engelsk)Inngår i: Sleep Medicine, ISSN 1389-9457, E-ISSN 1878-5506, Vol. 100, nr Suppl. 1, s. S130-S131Artikkel i tidsskrift, Meeting abstract (Annet vitenskapelig) Published
Abstract [en]

The Minimal Insomnia Symptom Scale (MISS) is a three-item screening instrument that has been found to be psychometrically sound and capable of screening for insomnia among adults and older people. This study aimed to test the measurement properties of the MISS together with an additional item focusing on daytime functioning among adolescents using the Rasch measurement model.

sted, utgiver, år, opplag, sider
Elsevier, 2022
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-91571 (URN)
Konferanse
The 16th World Sleep Congress, Rome, 11-16 March 2022
Forskningsfinansiär
Lund University
Tilgjengelig fra: 2022-08-24 Laget: 2022-08-24 Sist oppdatert: 2022-11-18bibliografisk kontrollert
Jansson-Frojmark, M., Alfonsson, S., Bohman, B., Rozental, A. & Norell-Clarke, A. (2022). Paradoxical intention for insomnia: A systematic review and meta-analysis. Journal of Sleep Research, 31(2), Article ID e13464.
Åpne denne publikasjonen i ny fane eller vindu >>Paradoxical intention for insomnia: A systematic review and meta-analysis
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2022 (engelsk)Inngår i: Journal of Sleep Research, ISSN 0962-1105, E-ISSN 1365-2869, Vol. 31, nr 2, artikkel-id e13464Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Paradoxical intention (PI) has been considered an evidence-based treatment for insomnia since the 1990s, but it has not been evaluated with modern review techniques such as meta-analysis. The present study aimed to conduct the first systematic review and meta-analysis of studies that explore the effectiveness of PI for insomnia on insomnia symptomatology and theory-derived processes. A systematic review and meta-analysis was conducted by searching for eligible articles or dissertations in six online bibliographic databases. Randomised controlled trials and experimental studies comparing PI for insomnia to active and passive comparators and assessing insomnia symptoms as outcomes were included. A random effects model was estimated to determine the standardised mean difference Hedge's g at post-treatment. Test for heterogeneity was performed, fail-safe N was calculated, and study quality was assessed. The study was pre-registered at International Prospective Register of Systematic Reviews (PROSPERO, CRD42019137357). A total of 10 trials were identified. Compared to passive comparators, PI led to large improvements in key insomnia symptoms. Relative to active comparators, the improvements were smaller, but still moderate for several central outcomes. Compared to passive comparators, PI resulted in great reductions in sleep-related performance anxiety, one of several proposed mechanisms of change for PI. PI for insomnia resulted in marked clinical improvements, large relative to passive comparators and moderate compared to active comparators. However, methodologically stronger studies are needed before more firm conclusions can be drawn.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2022
Emneord
adults, cognitive behavioural therapy, cognitive therapy, effectiveness, paradoxical intention, sleep disturbance
HSV kategori
Forskningsprogram
Psykologi
Identifikatorer
urn:nbn:se:kau:diva-85861 (URN)10.1111/jsr.13464 (DOI)000686361800001 ()34405469 (PubMedID)2-s2.0-85112713942 (Scopus ID)
Tilgjengelig fra: 2021-09-07 Laget: 2021-09-07 Sist oppdatert: 2022-12-08bibliografisk kontrollert
Organisasjoner
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0003-2008-0784