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- Jansson-Fröjmark, Markus, et al.
(författare)
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A bidirectional relationship between anxiety and depression, and insomnia? : A prospective study in the general population
- 2008
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Ingår i: Journal of Psychosomatic Research. - : Elsevier BV. - 0022-3999 .- 1879-1360. ; 64:4, s. 443-449
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The purpose of this study was to examine whether there is a bidirectional relationship between on the one hand anxiety and depression and on the other hand insomnia over the course of a year.Methods: A randomly selected sample of 3,000 participants from the general population filled out a baseline (N = 1,812) and 1-year follow-up survey (N = 1,498) on anxiety, depression, and insomnia.Results: In cross-sectional analyses, bivariate correlations showed that anxiety, depression, and insomnia were significantly inter-correlated (φ = .31-.54). In prospective analyses, logistic regression analyses demonstrated that baseline anxiety (OR = 4.27, 8% of the variance) and baseline depression (OR = 2.28, 2% of the variance) were related to new cases of insomnia at follow-up. Further, baseline insomnia was related to new episodes of high anxiety and high depression at follow-up (OR = 2.30, 2% of the variance; OR = 3.51; 4% of the variance).Conclusion: Evidence suggested that there is a bidirectional relationship between on the one hand anxiety and depression and on the other hand insomnia. This suggests that anxiety, depression, and insomnia are intertwined over time, which has implications for theoretical conceptualizations and interventions.
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- Jansson-Fröjmark, Markus, 1971-, et al.
(författare)
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Exploratory factor analysis of the Modified Somatic Perception Questionnaire on a sample with insomnia symptoms
- 2009
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Ingår i: Psychology, Health & Medicine. - London : Routledge. - 1354-8506 .- 1465-3966. ; 14:1, s. 62-72
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: The purpose of this study was to examine the factorial solution of the Modified Somatic Perception Questionnaire (MSPQ) among individuals with insomnia symptoms in the general population.Design: A cross-sectional study with a randomly selected sample from the general population (N = 3,600; 20-60 year old) was used. In total, 251 of the 2,179 respondents fulfilled the criteria for insomnia symptoms and filled out a survey on demographic parameters, the MSPQ, the Hospital Anxiety and Depression Scale, sleep medication use, and health care consumption.Methods: Exploratory factor analysis and correlations were used.Results: The results showed that a two-factor solution, accounting for 47.31% of the variance, was extracted from the 13 items of the MSPQ. While one factor consisting of 10 items determined general symptoms of somatic arousal (a = .83), the other factor with 3 items assessed stomach symptoms and nausea (a = .78). The two factors were significantly inter-correlated (r = .54) and significantly associated with the total MSPQ (r = .96, r = .74). The two factors also showed discriminant validity with anxiety and depression and predictive validity with retrospective reports of sleep medication use and health care consumption. A few significant interactions emerged the two MSPQ factors and degree of sleep complaints.Conclusions: Although it is often assumed that the MSPQ taps a single factor of somatic arousal, this study on individuals with insomnia symptoms suggests that a two-factor solution has the best fit. Further research on the factorial solution of the MSPQ is warranted.
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- Jansson-Fröjmark, Markus, et al.
(författare)
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How is persistent insomnia maintained? : A prospective study on 50-60 years old adults in the general population
- 2008
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Ingår i: British Journal of Health Psychology. - 1359-107X .- 2044-8287. ; 13:1, s. 121-133
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: The purpose of this study was to examine whether arousal, distress, and sleep-related beliefs are related to the maintenance of insomnia in old adults.Design: From a randomly selected sample from the general population (N = 3,600; 50-60 year old), 2,239 participants filled out a baseline and 1-year follow-up survey.Methods: Logistic regressions were used to investigate whether psychological mechanisms were related to sleep status (insomnia: n = 230; poor sleep: n = 210; normal sleep: n = 658; good sleep: n = 253) over one year. Cluster analysis was employed to assess whether it was possible to classify the participants based on their profiles of psychological functioning.Results: The results showed that arousal, sleep-related beliefs about future consequences, and anxiety were significantly related to the maintenance of insomnia (14-66% of the variance). Of the individuals with persistent insomnia, 67% belonged to a cluster characterized by high scores on arousal, sleep-related beliefs, and anxiety, 24% to a cluster defined by medium scores on the three mechanisms, and 9% to a cluster characterized by low scores on the three mechanisms.Conclusions: This investigation shows that arousal, sleep-related beliefs, and anxiety are associated with the maintenance of persistent insomnia, but also that these mechanisms often co-occur in individuals with persistent insomnia.
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- Jansson-Fröjmark, Markus, et al.
(författare)
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Is perfectionism related to pre-existing and future insomnia? : a prospective study
- 2007
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Ingår i: British Journal of Clinical Psychology. - 0144-6657 .- 2044-8260. ; 46:1, s. 119-124
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: The purpose of this study was to examine the role of perfectionism to pre-existing and future insomnia. METHODS: Based on a random sample from the general population (N=3600), 1936 participants filled out a baseline and 1-year follow-up survey on perfectionism (concern over mistakes and personal standards), emotional distress and insomnia. RESULTS: The results from sequential logistic regression analyses showed that concern over mistakes was significantly related to pre-existing and future insomnia. When emotional distress was accounted for, none of the perfectionism subscales contributed significantly in explaining pre-existing and future insomnia. CONCLUSIONS: The results indicate that though perfectionism seems to be related to both pre-existing and future insomnia, its role seems relatively weak
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- Jansson-Fröjmark, Markus, 1971-
(författare)
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Kognitiv beteendeterapi bra mot sömnlöshet
- 2005
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Ingår i: Läkartidningen. - 0023-7205 .- 1652-7518. ; 102:49, s. 3773-3773
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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- Jansson-Fröjmark, Markus, et al.
(författare)
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Psychosocial work stressors for insomnia : a prospective study on 50-60-year-old adults in the working population
- 2007
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Ingår i: International Journal of Behavioral Medicine. - 1070-5503 .- 1532-7558. ; 14:4, s. 222-228
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Tidskriftsartikel (refereegranskat)abstract
- This prospective study aimed to examine whether psychosocial work stressors were related to the development and maintenance of insomnia. From a randomly selected sample from the general population (N = 3,600), 1,873 participants aged 50-60 years old in the workforce filled out a baseline and 1-year follow-up questionnaire. Stepwise logistic regressions were used to investigate whether work stressors were related to the development and maintenance of insomnia over one year. The results showed that, among individuals with no insomnia at baseline, high work demands increased the risk of developing insomnia 1 year later (4% of the variance). Among participants with insomnia at baseline, work stressors did not influence the course of insomnia over one year. Finally, low influence over decisions, high professional compromise, and high work demands were related to the maintenance of insomnia (9% of the variance). The findings indicate that perceived work stressors are, although rather weakly, associated with the development and maintenance of insomnia. This might have implications for how insomnia is conceptualized as it places work stressors in the model and for how interventions at different stages of insomnia is implemented.
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