Suicide risk in relation to air pollen counts: A study based on data from Danish registers

BMJ Open

Volumn 3, Issue 5, 2013, Pages

  Qin, Ping ^a,b   Waltoft, Berit L ^a   Mortensen, Preben B ^a   Postolache, Teodor T ^c  

^a AARHUS UNIVERSITY   (Denmark)

^b UNIVERSITY OF OSLO   (Norway)

^c UNIVERSITY OF MARYLAND SCHOOL OF MEDICINE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ADULT; ARTICLE; CONTROLLED STUDY; DENMARK; DISEASE ASSOCIATION; DISEASE REGISTRY; ENVIRONMENTAL EXPOSURE; ENVIRONMENTAL TEMPERATURE; FEMALE; GEOGRAPHY; HUMAN; HUMIDITY; MAJOR CLINICAL STUDY; MALE; METEOROLOGICAL PHENOMENA; MOOD DISORDER; POLLEN; RISK ASSESSMENT; SEASON; SEX DIFFERENCE; SUICIDE;

EID: 84878449059     PISSN: None     EISSN: 20446055     Source Type: Journal    
DOI: 10.1136/bmjopen-2012-002462     Document Type: Article

References (48)

1. Chew KS, McCleary R. The spring peak in suicides: a cross-national analysis. Soc Sci Med 1995;40:223-30.
2. Maes M, Meltzer HY, Suy E, et al. Seasonality in severity of depression: relationships to suicide and homicide occurrence. Acta Psychiatr Scand 1993;88:156-61. (Pubitemid 23290237)
3. Petridou E, Papadopoulos FC, Frangakis CE, et al. A role of sunshine in the triggering of suicide. Epidemiology 2002;13:106-9. (Pubitemid 34031517)
4. Yip PS, Chao A, Chiu CW. Seasonal variation in suicides: diminished or vanished. Experience from England and Wales, 1982-1996. Br J Psychiatry 2000;177:366-9.
5. Christodoulou C, Douzenis A, Papadopoulos FC, et al. Suicide and seasonality. Acta Psychiatr Scand 2012;125:127-46.
6. Timonen M, Viilo K, Hakko H, et al. Is seasonality of suicides stronger in victims with hospital-treated atopic disorders? Psychiatry Res 2004;126:167-75. (Pubitemid 38581250)
7. Postolache TT, Stiller JW, Herrell R, et al. Tree pollen peaks are associated with increased nonviolent suicide in women. Mol Psychiatry 2005;10:232-5. (Pubitemid 40432675)
8. Woo JM, Gibbons RD, Rogers CA, et al. Pollen counts and suicide rates. Association not replicated. Acta Psychiatr Scand 2012;125:168-75.
9. Altamura C, VanGastel A, Pioli R, et al. Seasonal and circadian rhythms in suicide in Cagliari, Italy. J Affect Disord 1999; 53:77-85. (Pubitemid 29227355)
10. Barker A, Hawton K, Fagg J, et al. Seasonal and weather factors in parasuicide. Br J Psychiatry 1994;165:375-80. (Pubitemid 24274157)
11. Linkowski P, Martin F, De Maertelaer V. Effect of some climatic factors on violent and non-violent suicides in Belgium. J Affect Disord 1992;25:161-6.
12. Kim Y, Kim H, Kim DS. Association between daily environmental temperature and suicide mortality in Korea (2001-2005). Psychiatry Res 2011;186:390-6.
13. Danish Meteorological Institute. Pollen. Danish Meteorological Institute homepage [cited Oct 2010. http://www.dmi.dk/dmi/index/viden/pollen.htm
14. Juel K, Helweg-Larsen K. The Danish registers of causes of death. Dan Med Bull 1999;46:354-7. (Pubitemid 29439149)
15. Munk-Jorgensen P, Mortensen PB. The Danish Psychiatric Central Register. Dan Med Bull 1997;44:82-4. (Pubitemid 27110215)
16. Pedersen CB, Gotzsche H, Moller JO, et al. The Danish Civil Registration System. A cohort of eight million persons. Dan Med Bull 2006;53:441-9. (Pubitemid 44816920)
17. Hastie T, Tibshirani R. Generalized additive models for medical research. Stat Methods Med Res 1995;4:187-96.
18. Cleveland WS, Devlin SJ. Locally weighted regression -An approach to regression-Analysis by local fitting. J Am Stat Assoc 1988;83:596-610.
19. SAS Institute Inc. The GAM procedure. SAS/STAT software: release 9.1. Cary, NC: SAS Institute Inc, 2004:1557-607.
20. Galli SJ, Tsai M, Piliponsky AM. The development of allergic inflammation. Nature 2008;454:445-54.
21. Yip PS, Yang KC, Qin P. Seasonality of suicides with and without psychiatric illness in Denmark. J Affect Disord 2006;96:117-21. (Pubitemid 44548045)
22. Postolache TT, Mortensen PB, Tonelli LH, et al. Seasonal spring peaks of suicide in victims with and without prior history of hospitalization for mood disorders. J Affect Disord 2009;121:89-93.
23. Qin P, Mortensen PB, Waltoft BL, et al. Allergy is associated with suicide completion with a possible mediating role of mood disorder -A population-based study. Allergy 2011;66:658-64.
24. Allergen and Botanic Reference Library. Tree and plant allergy info for research. Allergen and Botanic Reference Library 2012 [cited 10 Oct 2011]; http://www.pollenlibrary.com/
25. Settipane RA, Charnock DR. Epidemiology of rhinitis: allergic and nonallergic. Clin Allergy Immunol 2007;19:23-34.
26. Stuck BA, Czajkowski J, Hagner AE, et al. Changes in daytime sleepiness, quality of life, and objective sleep patterns in seasonal allergic rhinitis: a controlled clinical trial. J Allergy Clin Immunol 2004;113:663-8. (Pubitemid 38530420)
27. Tonelli LH, Postolache TT. Airborne inflammatory factors: 'from the nose to the brain'. Front Biosci (Schol Ed) 2010;2:135-52.
28. Tonelli LH, Stiller J, Rujescu D, et al. Elevated cytokine expression in the orbitofrontal cortex of victims of suicide. Acta Psychiatr Scand 2008;117:198-206. (Pubitemid 351207982)
29. Mann JJ. Neurobiology of suicidal behaviour. Nat Rev Neurosci 2003;4:819-28. (Pubitemid 37314404)
30. Tonelli LH, Holmes A, Postolache TT. Intranasal immune challenge induces sex-dependent depressive-like behavior and cytokine expression in the brain. Neuropsychopharmacology 2008; 33:1038-48. (Pubitemid 351367545)
31. Timonen M, Jokelainen J, Hakko H, et al. Atopy and depression: results from the Northern Finland 1966 Birth Cohort Study. Mol Psychiatry 2003;8:738-44. (Pubitemid 36976431)
32. Timonen M, Jokelainen J, Silvennoinen-Kassinen S, et al. Association between skin test diagnosed atopy and professionally diagnosed depression: a Northern Finland 1966 Birth Cohort study. Biol Psychiatry 2002;52:349-55. (Pubitemid 35245974)
33. Qin P, Nordentoft M. Suicide risk in relation to psychiatric hospitalization: evidence based on longitudinal registers. Arch Gen Psychiatry 2005;62:427-32. (Pubitemid 40471692)
34. Manalai P, Hamilton RG, Langenberg P, et al. Pollen-specific immunoglobulin E positivity is associated with worsening of depression scores in bipolar disorder patients during high pollen season. Bipolar Disord 2012;14:90-8.
35. Woo JM, Gibbons RD, Qin P, et al. Suicide and prescription rates of intranasal corticosteroids and nonsedating antihistamines for allergic rhinitis: an ecological study. J Clin Psychiatry 2011; 72:1423-8.
36. Fang BJ, Tonelli LH, Soriano JJ, et al. Disturbed sleep: linking allergic rhinitis, mood and suicidal behavior. Front Biosci (Schol Ed) 2010;2:30-46.
37. Leger D, Annesi-Maesano I, Carat F, et al. Allergic rhinitis and its consequences on quality of sleep: an unexplored area. Arch Intern Med 2006;166:1744-8. (Pubitemid 44414463)
38. Goodwin RD, Marusic A, Hoven CW. Suicide attempts in the United States: the role of physical illness. Soc Sci Med 2003; 56:1783-8. (Pubitemid 36299242)
39. Hawton K, van Heeringen K. Suicide. Lancet 2009; 373:1372-81.
40. Nock MK, Borges G, Bromet EJ, et al. Suicide and suicidal behavior. Epidemiol Rev 2008;30:133-54.
41. Lee JH, Haselkorn T, Chipps BE, et al. Gender differences in IgE-mediated allergic asthma in the epidemiology and natural history of asthma: Outcomes and Treatment Regimens (TENOR) study. J Asthma 2006;43:179-84. (Pubitemid 43879409)
42. Barrenas F, Andersson B, Cardell LO, et al. Gender differences in inflammatory proteins and pathways in seasonal allergic rhinitis. Cytokine 2008;42:325-9.
43. Frenz DA. Interpreting atmospheric pollen counts for use in clinical allergy: spatial variability. Ann Allergy Asthma Immunol 2000; 84:481-9.
44. Portnoy JM. What do pollen counts mean? Ann Allergy Asthma Immunol 2004;93:109-10. (Pubitemid 39128487)
45. Gilmour MI, Jaakkola MS, London SJ, et al. How exposure to environmental tobacco smoke, outdoor air pollutants, and increased pollen burdens influences the incidence of asthma. Environ Health Perspect 2006;114:627-33.
46. Kim C, Jung SH, Kang DR, et al. Ambient particulate matter as a risk factor for suicide. Am J Psychiatry 2010;167:1100-7.
47. Szyszkowicz M, Willey JB, Grafstein E, et al. Air pollution and emergency department visits for suicide attempts in vancouver, Canada. Environ Health Insights 2010;4:79-86.
48. Papadopoulos FC, Frangakis CE, Skalkidou A, et al. Exploring lag and duration effect of sunshine in triggering suicide. J Affect Disord 2005;88:287-97. (Pubitemid 41446970)