Yıldırım DEMİR

Examining Periodic Differences of Suicide Cases with Circular Data Analysis

The aim of this study is to analyze suicide cases with circular data analysis and to compare them with the standard linear analysis method and to guide the implementation of long-term social protective programs. Circular data analysis was used as method. However, standard linear statistics method was also used to compare the results of circular data analysis. Men constitute 74.91% of 15731 cases included in the study. Disease (39.84%) has been identified as the highest risk factor. Despite having a low concentration, the most suicide occurred in May (9.43%). Furthermore, a significant relationship was found between suicide causes and gender and suicide causes and months (p

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1. Durkheim E. Suicide A Study in Sociology. Taylor and Francis e-Library Press; 2005.
2. Şevik AE, Özcan H, Uysal E. Analyzing Suicide Attempts: Risk Factors and Follow Up. Turkish J Clin Psychiatry 2012; 15(4): 218-225.
3. Söğüt Ö, Sayhan MB, Gökdemir MT, et al. Evaluation of Suicide Attempts in Southeast of Turkey, Around the Sanliurfa Region. J Acad Emerg Med 2011; 10(1): 8-13.
4. Alptekin K, Duyan V, Demirel S. Suicide attempts in Adiyaman. Anatol J Psychiatry 2006; 7(3): 150-156.
5. Granberg D, Westerberg C. On Abandoning Life when It is Least Difficult. Biodemography Soc Biol 1999; 46(1-2): 154- 162.
6. Ajdacic-Gross V, Lauber C, Bopp M, et al. Reduction in the suicide rate during Advent-a time series analysis. Psychiatry Res 2008; 157(1-3): 139-146.
7. Demir Y. Theoretical Fundamentals and An Application of Circular Data Analysis [Ph.D. Thesis]. Ataturk Universiti; 2016.
8. Cremers J, Klugkist I. One Direction? A Tutorial for Circular Data Analysis Using R With Examples in Cognitive Psychology. Front Psychol 2018; 9: 1-13.
9. Gill J, Hangartner D. Circular Data in Political Science and How to Handle It. Polit Anal 2010; 18(3): 316-336.
10. Srinivas M, Sambasiva Rao S. Importance of Circular Data in Sports Science-A Review. Ijpeaas 2016; 1(2): 37-44.
11. TUIK (Turkish Statistical Institute). Data. 2020. https://biruni.tuik.gov.tr/ medas/?kn=115& locale=tr
12. Jammalamadaka SR, Seagupta A. Topics in Circular Statistics. World Scientific; 2001. 13. Zar JH. Biostatistical Analysis. 4th ed. Prentice Hall; 2010.
14. Fisher NI. Statistical Analysis of Circular Data. Cambridge University Press; 1993.
15. Mardia K V, Jupp PE. Directional Statistics. John Wiley and Sons; 2000.
16. Ser G. Directional Data Analysis and An Application. YYU J AGR SC. 2014; 24(2): 121-126. doi:10.29133/yyutbd.235925
17. Hussin AG, Jalaluddin F, Mohammed I. Analysis of Malaysian Wind Direction Data Using AXIS. J Appl Sci Res 2006; 2(11): 1019- 1021.
18. Brunsdon C, Corcoran J. Using circular statistics to analyse time patterns in crime incidence. Comput Environ Urban Syst 2006; 30(3): 300-319.
19. Hintze JL. Circular Data Analysis. In: Hintze JL, ed. NCSS User’s Guide II. NCSS; 2007: 205-278.
20. Mardia KV. Statistics of Directional Data. Academic Press; 1972.
21. Keskin S, Demir Y. Dairesel Veri Analizi ve Hipotez Testleri. In: XVI. Ulusal Biyoistatistik Kongresi; 2014:26.
22. Sayıl I, Oral A, Güney S, Ayhan N, Ayhan Ö, Devrimci H. Ankara’da İntihar Girişimleri Üzerine Bir Çalışma. J Cris 1993; 1(2): 56-61.
23. Şenol V, Ünalan D, Avşaroğulları L, İkizceli İ. An analysis of patients admitted to the Emergency Department of Erciyes University Medical School due to suicidal attempt. Anatol J Psychiatry 2005; 6(1): 19-29.
24. Preti A, Lentini G, Maugeri M. Global warming possibly linked to an enhanced risk of suicide: Data from Italy, 1974-2003. J Affect Disord 2007; 102(1-3): 19-25.
25. Törő K, Dunay G, Bartholy J, Pongrácz R, Kis Z, Keller É. Relationship between suicidal cases and meteorological conditions. J Forensic Leg Med 2009; 16(5): 277-279. Asirdizer M, Yavuz MS, Demirag Aydin S, Dizdar MG. Suicides in Turkey Between 1996 and 2005: General Perspective. Am J Forensic Med Pathol 2010; 31(2): 138-145.
26. Kim Y, Kim H, Kim DS. Association between daily environmental temperature and suicide mortality in Korea (2001-2005). Psychiatry Res 2011; 186(2-3): 390-396.
27. Tsai J-F, Cho W. Temperature change dominates the suicidal seasonality in Taiwan: A time-series analysis. J Affect Disord 2012; 136(3): 412-418.