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- Madsen, Ida E.H., et al.
(author)
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Study protocol for examining job strain as a risk factor for severe unipolar depression in an individual participant meta-analysis of 14 European cohorts
- 2014
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In: F1000 Research. - : F1000 Research Ltd. - 2046-1402. ; 2
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Journal article (peer-reviewed)abstract
- Background: Previous studies have shown that gainfully employed individuals with high work demands and low control at work (denoted "job strain") are at increased risk of common mental disorders, including depression. Most existing studies have, however, measured depression using self-rated symptom scales that do not necessarily correspond to clinically diagnosed depression. In addition, a meta-analysis from 2008 indicated publication bias in the field.Methods: This study protocol describes the planned design and analyses of an individual participant data meta-analysis, to examine whether job strain is associated with an increased risk of clinically diagnosed unipolar depression based on hospital treatment registers. The study will be based on data from approximately 120,000 individuals who participated in 14 studies on work environment and health in 4 European countries. The self-reported working conditions data will be merged with national registers on psychiatric hospital treatment, primarily hospital admissions. Study-specific risk estimates for the association between job strain and depression will be calculated using Cox regressions. The study-specific risk estimates will be pooled using random effects meta-analysis.Discussion: The planned analyses will help clarify whether job strain is associated with an increased risk of clinically diagnosed unipolar depression. As the analysis is based on pre-planned study protocols and an individual participant data meta-analysis, the pooled risk estimates will not be influenced by selective reporting and publication bias. However, the results of the planned study may only pertain to severe cases of unipolar depression, because of the outcome measure applied.
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- Hannerz, Erik, et al.
(author)
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Punk in Sweden.
- 2017
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In: Bloomsbury Encyclopedia of Popular Music of the World. - 9781501326103 ; Volume XI, s. 613-616
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Book chapter (peer-reviewed)
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- Hannerz, Erik, et al.
(author)
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Punk Subculture
- 2014
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In: Encyclopedia of Social Deviance. - 9781452240336
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Book chapter (peer-reviewed)
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- HANNERZ, J, et al.
(author)
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Effects of increasing the intracranial blood volume in cluster headache patients and controls
- 1995
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In: Cephalalgia : an international journal of headache. - : SAGE Publications. - 0333-1024. ; 15:6, s. 499-503
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Journal article (peer-reviewed)abstract
- Eleven patients with episodic cluster headache in period, five patients out of period and six controls were studied concerning the effects of an increase of the intracranial blood volume by tilting. Common carotid artery (CCA) blood flow was similar in all three groups at baseline and during tilting. CCA diameters were similar at baseline and increased during tilting in all three groups, indicating that tilting caused an increase in the extra- and intracranial blood volume. Unilateral pain or sympathetic dysfunction did not appear during tilting in the patients out of period or in the controls. In four of eight studied patients with cluster headache in period, unilateral miosis and ptosis appeared during tilting. Two of these four patients developed intense unilateral pain, while the other two did not report any pain. Four other patients developed slight unilateral pain but no sympathetic dysfunction during tilting.
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- Hannerz, J, et al.
(author)
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Orbital phlebography in idiopathic intracranial hypertension and chronic tension-type headache
- 2013
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In: Acta radiologica short reports. - : SAGE Publications. - 2047-9816. ; 2:6, s. 2047981613498861-
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Journal article (peer-reviewed)abstract
- Pathologic signs in orbital phlebographies have been reported in various neurological diseases. Purpose To study if pathologic signs in orbital phlebography may be markers of inflammation primarily affecting intracranial capillaries, which would cause intracranial hypertension. Material and Methods Two groups with different intracranial cerebrospinal fluid pressures (Pcsf) were compared as to inflammatory markers in serum and pathologic signs in orbital phlebographies. Nine consecutive patients with idiopathic intracranial hypertension (IIH) with bilateral papilledema and eight consecutive patients with chronic tension-type headache (CTTH) were investigated prospectively with fibrinogen, orosomucoid, haptoglobin in serum, and invasive orbital phlebograms. The angiograms were evaluated by two skilled neuroradiologists, independent of each other and without knowledge of the diagnoses or aim of the study, as to the following pathologic signs: (i) narrowing of superior ophthalmic veins; (ii) caliber changes of intraorbital veins; (iii) collaterals of intraorbital veins; (iv) flow to cavernous sinus; and (v) asymmetric drainage of cavernous sinus. Results Mean body mass index was >30 kg/m2 in both groups. Pcsf was >200 < 250 mm H2O in 50% of the CTTH and >350 mm H2O in all IIH patients. No difference in inflammatory markers in blood was found. The phlebographies of the IIH patients had more pathologic signs and were considered pathologic significantly more often than the ones of the CTTH patients ( P < 0.001). Conclusion The difference as to phlebographic pathologic signs between the IIH and the CTTH patients with different Pcsf supports the hypothesis that such phlebographic signs are markers of inflammation primarily affecting intracranial capillaries, which would disturb cerebrospinal fluid regulation causing intracranial hypertension.
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- Istomin, S. Ya., et al.
(author)
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An X-ray powder and electron diffraction study of reduced tantalates with the perovskite structure, Na1-xSrxTaO3, 0 < x <= 0.4
- 2000
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In: Journal of Solid State Chemistry. - : Elsevier BV. - 0022-4596 .- 1095-726X. ; 154, s. 427-434
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Journal article (peer-reviewed)abstract
- Single-phase perovskite-type reduced tantalates, Na1-x SrxTaO3 with 0 < x 0.4, have been synthesized by heating mixtures of NaTaO3, Sr5Ta4O15 and Ta in sealed tantalum ampules at 1400 degreesC for 20-24 h. At Sr contents of 0.5 less than or equal to x less than or equal to 0.8 and above 1400 degreesC, polyphasic samples were obtained. X-ray powder diffraction (XRD) and transmission electron microscopy studies (selected area (SAED) and convergent beam electron diffraction (CBED)) showed an orthorhombic distortion of the x = 0.1 sample (GdFeO3 type, space group Pnma). The interpretation of the XRD, SAED, and CBED studies indicates the crystallites found in the x = 0.2 and 0.3 samples to consist of domains with tetragonal and orthorhombic symmetry having the unit Cell parameters of a = b approximate to root (2a(per)) and c approximate to 2a(per) and a approximate to b approximate to root (2a(per)) and c approximate to a(per) (a(per) cell axis in the ideal perovskite structure), respectively. The x 0.4 sample was cubic (space group Pm3m) with a = a(per). Resistivity measurements showed that all samples are semiconducting and that the conductivity increases with Sr content. Magnetic measurements of Na0.6Sr0.4TaO3 revealed a diamagnetic behavior down to 20 K. Below this temperature a slight paramagnetism arises. (C) 2000 Academic Press.
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