Suicide is one of the major health issues and causes of mortality in modern societies. A global morality rate of suicide is 16 persons per 100,000 according to the World Health Organization report. Fortunately, the rates in most OECD countries have shown a dramatic decrease over the last 20 years. There are, however, two important exceptions, Japan and South Korea. The suicide rates in these two countries have been on an increasing trend. Because the two neighboring countries share similar socio-demographic contexts, I investigated the effects of the three time-related demographic variables (age, period, and cohort) on suicide rates in Japan and South Korea. The Age-Period-Cohort Intrinsic Estimator model was operated using data of vital statistics and population census from the Statistics Bureau and the Ministry of Internal Affairs and Communications in Japan, and cause of death data and population census from Statistics Korea in South Korea. Even though the two countries are neighboring countries that have had some similar socio-demographic contexts, the factors contributing to increasing suicide rates vary in each country. The result showed age effects in Japan greatly contributed to suicide compared to period and cohort effects, and the age effects were highest during the fifties age bracket. On the other hand, South Korea turned out to have more compound reasons, showing pronounced age effects in the elderly population, increasing period effects, and the strong cohort effects of the current elderly and middle-aged populations. From this result, although Japan and South Korea are neighboring countries with shared histories, industrial structures, social systems, and some similar demographic characteristics, the cause of increasing suicide rates in the two countries clearly varies and the efforts for preventing suicide must also vary depending on the social contexts of each country.

This work constitutes a macro-sociological study of suicide. The empirical focus is on suicide mortality in Russia, which is among the highest in the world and has, moreover, developed in a dramatic manner over the second half of the 20th century. Suicide mortality in contemporary Russia is here placed within the context of development over a longer time period through empirical studies on 1) the general and sex- and age-specific developments in suicide over the period 1870–2007, 2) underlying dynamics of Russian suicide mortality 1956–2005 pertaining to differences between age groups, time periods, and particular generations and 3) the continuity in the aggregate-level relationship between heavy alcohol consumption and suicide mortality from late Tsarist period to post-World War II Russia. In addition, a fourth study explores an alternative to Émile Durkheim’s dominating macro-sociological perspective on suicide by making use of Niklas Luhmann’s theory of social systems. With the help of Luhmann’s macro-sociological perspective it is possible to consider suicide and its causes also in terms of processes at the individual level (i.e. at the level of psychic systems) in a manner that contrasts with the ‘holistic’ perspective of Durkheim. The results of the empirical studies show that Russian suicide mortality, despite its exceptionally high level and dramatic changes in the contemporary period, shares many similarities with the patterns seen in Western countries when examined over a longer time period. Societal modernization in particular seems to have contributed to the increased rate of suicide in Russia in a manner similar to what happened earlier in Western Europe. In addition, the positive relationship between heavy alcohol consumption and suicide mortality proved to be remarkably stable across the past one and a half centuries. These results were interpreted using the Luhmannian perspective on suicide developed in this work.

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MIRTINGUMO NUO IŠORINIŲ MIRTIES PRIEŽASČIŲ TRENDAI LIETUVOS MIESTO IR KAIMO KOHORTOSE 1967 - 2006 62 puslapiai, 32 grafikai, 2 lentelės. Raktažodžiai: amžiaus - periodo - kohortos analizė, mirtingumas, trendas, savižudybės, autotransporto įvykiai. Tyrimo tikslas: Nustatyti detalius mirtingumo dinamikos nuo savižudybių ir autotransporto įvykių ypatumus 40 - ies metų laikotarpiu priklausomai nuo lyties ir gyvenamosios vietos. Uždaviniai: Apskaičiuoti pagrindinius dinamikos parametrus - amžių, periodą, kohortas ir nustatyti jų įtaką dinamikos procesui; Išanalizuoti du svarbiausius mirtingumo dinamikos faktorius kiekvienai mirties priežasčiai ir sumodeliuoti šių faktorių poveikio kartu įtaką šiam procesui pagal lytį ir gyvenamąją vietą. Nustatyti, kaip paamžiniai mirtingumo rodikliai kinta kiekviename kohortos penkmetiniame intervale, koks šių kreivių lygis įvairiose kohortose ir kaip tai skiriasi pagal lytį ir gyvenamąją vietą. Metodai: Mirčių duomenys nuo savižudybių ir autotransporto įvykių Lietuvoje nuo 1967 iki 2006 m. buvo sugrupuoti į 17 amžiaus grupių ir 8 penkmetinius periodus. Duomenų analizei panaudotas Poissono regresijos metodas pritaikytas amžiaus - periodo - kohortos modelių efektams atskirti. Rezultatai: Ir moterų ir vyrų kaimo populiacijos mirtingumo nuo savižudybių tendencija buvo ryškiai didėjanti per visą analizuojamą periodą. Miesto moterų populiacijoje mirtingumo rodikliai nuo savižudybių mažėjo, išskyrus didėjančius senyvo amžiaus grupių rodiklius. Miesto... [toliau žr. visą tekstą] / MORTALITY TRENDS FROM EXTERNAL CAUSES AMONG URBAN AND RURAL COHORTS IN LITHUANIA 1967 - 2006 62 pages, 32 graphics, 2 tables. Keywords: age – period – cohort analysis, mortality, trends, suicide, vehicle accidents. Research aim: The aim of this study was to examine particular trends of mortality from suicide and vehicle accidents during 40 years period subject to sex and place of residence. The tasks of the research work were as follows: To calculate basic parameters of mortality trends - age, period and cohorts and detect their influence to the process; To analyze two most important factors to variation for each cause of the death and to simulate this along factors' influence to the procces subject to sex and place of residence. To find out how subsequent mortality rates vary in each cohort quinquennial interval, what is the difference of these curves levels in different cohorts and how they differ between sex and place of residence. Methods: Deaths due to suicides and vehicle accidents in the period from 1967 through 2006 and the corresponding population figures were grouped into 17 age groups and 8 5-year periods. These were fitted to Poisson regression models to assess age, period, and cohort effects. Results: Both women's and men's mortality trends from suicides increased dramatically through analyzed period. Trends of urban women's suicide mortality have decreased, except increasing trends of the elderly. Urban men's population had experienced increasing trends from... [to full text]