Takashi Oshio

Hitotsubashi University, Edo, Tōkyō, Japan

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Publications (69)29.61 Total impact

  • Takashi Oshio, Seiichi Inagaki
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    ABSTRACT: In the current study, we investigated how initial job status at graduation from school is associated with midlife psychological distress, using microdata from a nationwide Internet survey of 3,117 men and 2,818 women aged 30-60 years. We measured psychological distress using the Kessler 6 (K6) score (range: 0-24) and the binary variable of K6 score ≥5. We found that unstable initial job status substantially raised midlife K6 scores and the probability of a K6 score ≥5 for both men and women. Furthermore, our mediation analysis showed that for men, slightly less than 60% of the effect was mediated by current job status, household income, and marital status. For women, the effect of initial job status was somewhat lesser than that for men, and only 20-30% of it was mediated. Despite these gender asymmetries, the results indicated that initial job status was a key predictor of midlife mental health. The association between job status and mental health should be further investigated with special reference to the institutional attributes of the labor market and their socio-economic/demographic outcomes.
    Industrial Health 03/2015; DOI:10.2486/indhealth.2014-0256 · 1.05 Impact Factor
  • Takashi Oshio, Akizumi Tsutsumi, Akiomi Inoue
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    ABSTRACT: It is well known that job stress is negatively related to workers' mental health, but most recent studies have not controlled for unobserved time-invariant confounders. In the current study, we attempted to validate previous observations on the association between job stress and workers' mental health, by removing the effects of unobserved time-invariant confounders. We used data from three to four waves of an occupational Japanese cohort survey, focusing on 31,382 observations of 9741 individuals who participated in at least two consecutive waves. We estimated mean-centered fixed effects models to explain psychological distress in terms of the Kessler 6 (K6) scores (range: 0-24) by eight job stress indicators related to the job demands-control, effort-reward imbalance, and organizational injustice models. Mean-centered fixed effects models reduced the magnitude of the association between jobs stress and K6 scores to 44.8-54.2% of those observed from pooled ordinary least squares. However, the association remained highly significant even after controlling for unobserved time-invariant confounders for all job stress indicators. In addition, alternatively specified models showed the robustness of the results. In all, we concluded that the validity of major job stress models, which link job stress and workers' mental health, was robust, although unobserved time-invariant confounders led to an overestimation of the association. Copyright © 2014 Elsevier Ltd. All rights reserved.
    Social Science & Medicine 12/2014; 126C:138-144. DOI:10.1016/j.socscimed.2014.12.021 · 2.56 Impact Factor
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    Takashi Oshio, Mari Kan
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    ABSTRACT: IntroductionIt is well known that lower income is associated with poorer health, but poverty has several dimensions other than income. In the current study, we investigated the associations between multidimensional poverty and health variables.Methods Using micro data obtained from a nationwide population survey in Japan (N¿=¿24,905), we focused on four dimensions of poverty (income, education, social protection, and housing conditions) and three health variables (self-rated health (SRH), psychological distress, and current smoking). We examined how health variables were associated with multidimensional poverty measures, based on descriptive and multivariable logistic regression analyses.ResultsUnions as composite measures of multiple poverty dimensions were more useful for identifying individuals in poor SRH or psychological distress than a single dimension such as income. In comparison, intersections of poverty dimensions reduced the coverage of individuals considered to be in poverty and tend to be difficult to justify without any explicit policy objective. Meanwhile, education as a unidimensional poverty indicator could be useful for predicting current smoking.Conclusions Results obtained from the current study confirmed the practical relevance of multidimensional poverty for health.
    International Journal for Equity in Health 12/2014; 13(1):128. DOI:10.1186/s12939-014-0128-9 · 1.71 Impact Factor
  • Takashi Oshio
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    ABSTRACT: It is widely known that the mental health of middle-aged adults is closely associated with involvement in family caregiving, as well as socioeconomic and sociodemographic factors. However, most studies focusing on mental health in adulthood have not fully controlled for time-invariant factors. Moreover, the relative importance of factors associated with mental health has remained largely understudied. In the current study, we employed fixed-effects regression models to examine the manner in which middle-aged adults' mental health is associated with involvement in family caregiving and socioeconomic and sociodemographic factors, after controlling for time-invariant factors. Using data from a population-based, six-year panel survey in Japan, we focused on the evolution of the Kessler 6 (K6) scores (range: 0–24) for 26,522 individuals (12,646 men and 13,876 women) aged 50–59 years in 2005 over the subsequent five years. We found that men and women experienced 0.54 (95% CI 0.44–0.64) and 0.57 (95% CI 0.49–0.66) unit increases in their K6 scores, respectively, when they became involved in care provision for any family member. This magnitude of distress exceeded that associated with any socioeconomic or sociodemographic factor examined in this study. Furthermore, we found that care provision to a mother-in-law had an additional, negative association with mental health for female caregivers, as opposed to men. These findings suggest that more panel studies are needed to examine the correlates of mental health among middle-aged adults.
    Social Science & Medicine 08/2014; 115:121–129. DOI:10.1016/j.socscimed.2014.06.016 · 2.56 Impact Factor
  • Takashi Oshio, Kunio Urakawa
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    ABSTRACT: Previous studies have shown that income inequality in society is negatively associated with individuals subjective well-being (SWB), such as their perceived happiness and self-rated health (SRH). However, it is not realistic to assume that individuals have precise information about actual income distribution measured by the Gini coefficient or other statistical measures. In the current study, we examined how perceived income inequality, rather than actual inequality, was associated with SWB, using cross-sectional data collected from a nationwide, Internet survey conducted in Japan (N = 10,432). We also examined how this association was confounded by individuals’ objective and subjective income status, considering the possibility that individuals with lower income status are more inclined to both perceive income inequality and feel unhappy/unhealthy. In our analysis, we focused on the perception of widening income inequality (as perceived income inequality), perceived happiness and SRH (as SWB), and household income and living standards compared with 1 year ago and compared with others (as income status). We also controlled for personality traits. We obtained three key findings: (1) perceived income inequality was negatively associated with SWB; (2) both perceived income inequality and SWB were associated with income status; and (3) the association between perceived income inequality and SWB was attenuated after controlling for income status, but not fully for perceived happiness. These findings suggest that perceived income inequality, which links actual income inequality to SWB, should be further studied.
    Social Indicators Research 05/2014; DOI:10.1007/s11205-013-0323-x · 1.26 Impact Factor
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    Takashi Oshio, Akiomi Inoue, Akizumi Tsutsumi
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    ABSTRACT: Our current study investigated how workplace social capital (WSC) mediates and moderates the associations between adverse work characteristics and psychological distress among Japanese workers. We collected cross-sectional data (N=9,350) from a baseline survey of an occupational Japanese cohort study. We focused on individual WSC and considered job demands/control, effort/reward, and two types (i.e., procedural and interactional) of organizational justice as work-characteristic variables. We defined psychological distress as a score of ≥5 on the Kessler Psychological Distress Scale (K6 scale). Multivariate logistic regression analyses predicted a binary variable of psychological distress by individual WSC and adverse work characteristics, adjusting for individual-level covariates. Individual WSC mediated the associations between adverse work characteristics and psychological distress in almost all model specifications. Additionally, individual WSC moderated the associations of psychological distress with high job demands, high effort, and low interactional justice when we used a high WSC cutoff point. In contrast, individual WSC did not moderate such interactions with low job control, reward, or procedural justice. We concluded that individual WSC mediated the associations between adverse work characteristics and psychological distress among Japanese workers while selectively moderating their associations at high levels of WSC.
    Industrial Health 04/2014; DOI:10.2486/indhealth.2014-0032 · 1.05 Impact Factor
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    ABSTRACT: Using panel data from two surveys in Japan and Europe, we examine the comparability of the self-rated health of the middle-aged and elderly across Japan and European countries and across the survey periods. We find that a person's own health is evaluated using different standards (thresholds) across the different countries and survey waves. When evaluated using common thresholds, the Japanese elderly are found to be healthier than their counterparts in the European countries. Reporting biases causing discrepancies between the changes in individuals' self-rated health and their actual health over the survey waves are associated with education and country of residence.
    Japanese Economic Review 02/2014; 65(4). DOI:10.1111/jere.12029 · 0.27 Impact Factor
  • Takashi Oshio, Maki Umeda, Mayu Fujii
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    ABSTRACT: In this study, we analyze how life satisfaction and self-rated health are associated with income dynamics. We used data from male employees in Japan (N = 1004) drawn from a panel dataset of career wage records spanning a period of over 30 years. The income history used in this study was based on administrative records; thus, the data were almost free of recall error. Our results show that life satisfaction was more closely associated with a change in lifetime average income or maximum income than with a change in income compared to the previous year, whereas the opposite was true for self-rated health. In addition, life satisfaction tended to resist a decline in response to a fall in income from its average or maximum level, but this was not the case for self-rated health. Furthermore, an income peak experienced in the past made both life satisfaction and self-rated health more sensitive to changes in income, whereas a trough experienced in the past made them less sensitive. These findings suggest that the association of income between subjective well-being and health should be studied further, within a dynamic framework.
    Japan and the World Economy 12/2013; 28:143–150. DOI:10.1016/j.japwor.2013.09.003 · 0.34 Impact Factor
  • Satoshi Shimizutani, Takashi Oshio
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    ABSTRACT: We explore the labor supply effect of the social security earnings test in Japan on those aged 65–69 years through a combined examination of the elimination of the earnings test in 1985 and its reinstatement in 2002. We present evidence showing that the effects of changes in the earnings tests on the labor supply of the elderly are not symmetric, controlling for changes in the attributes of workers and firms. The repeal of the earnings test in 1985 did affect the earnings distribution of the elderly (especially for male), while its reinstatement in 2002 did not alter the earnings distribution.
    Japan and the World Economy 12/2013; 28:99–111. DOI:10.1016/j.japwor.2013.08.003 · 0.34 Impact Factor
  • T Oshio, M Umeda, N Kawakami
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    ABSTRACT: To examine the extent to which social support and socio-economic status (SES) in adulthood mediate the impact of interpersonal adversity in childhood on adult mental health using large-scale population data in Japan. Cross-sectional survey. Data were derived from the Japanese Study of Stratification, Health, Income and Neighbourhood, which was conducted from October 2010 to February 2011 in four municipalities in and around the Tokyo metropolitan area. Survey participants were community residents aged 25-50 years who were selected at random from voter registration lists. The total sample size was 3292. The self-reported experience of parental maltreatment (physical abuse and/or neglect) and bullying in school and their impacts on adult mental health (in terms of K6 = 5+, K6 = 13+ and suicide ideation) were examined using multivariate logistic models. Interpersonal adversity in childhood has a negative impact on adult mental health even after controlling for childhood SES. For example, the odds ratio for K6 = 5+, responding to parental maltreatment, was 2.64 (95% confidence interval 2.04-3.41). Perceived social support and adult SES mediated the impact of interpersonal adversity in childhood, but a substantial proportion of the impact was unexplained by their mediating effects; social support and adult SES only mediated 11-24% and 6-12%, respectively. It was also found that social support and adult SES (except educational attainment) did not moderate the negative impact of interpersonal adversity in childhood. This analysis highlighted that the impact of interpersonal adversity in childhood is relatively independent of social support and SES in adulthood. This result has clear policy implications; more focus should be placed on policies that aim to reduce incidents of childhood maltreatment and bullying per se, both of which have a long-lasting direct impact on mental health.
    Public health 07/2013; 127(8). DOI:10.1016/j.puhe.2013.05.005 · 1.48 Impact Factor
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    ABSTRACT: In this study, we attempt to investigate how educational subsidy, childcare allowance and family allowance affect economic growth and income distribution on the basis of simulation models which incorporate intergenerational ability transmission and endogenous fertility. The simulation results show that financial support for higher education can both increase economic growth and reduce income inequality, especially if the abilities of parent and child are closely correlated. In contrast with educational subsidy, raising childcare allowance or family allowance has limited impacts on growth and income inequality.
    Applied Economics 06/2013; 45(17). DOI:10.1080/00036846.2012.667554 · 0.46 Impact Factor
  • Takashi Oshio, Maki Umeda, Norito Kawakami
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    ABSTRACT: In this study, we examined the impact of childhood interpersonal adversity on adulthood subjective well-being (SWB), with a focus on the mediating and moderating effects of social support and socioeconomic status (SES). We concentrated on parental maltreatment (abuse and neglect) and bullying in school as childhood adversity variables and on perceived happiness and self-rated health as adulthood SWB measures. Our empirical analysis was based on micro data from a survey in municipalities in and around the Tokyo metropolitan area (N = 3,292). We obtained four key findings. First, the experience of childhood adversity had a substantial negative impact on adulthood SWB. Second, social support and SES significantly mediated the impact of childhood adversity. Third, however, a large proportion of the impact of childhood adversity remained unexplained by their mediation effects. Fourth, social support and SES did not moderate the impact of childhood adversity. Hence, we can conclude that childhood adversity affects adulthood SWB in a relatively independent manner rather than being substantially mediated or moderated by social support or SES. Accordingly, social policies should aim at reducing incidents of childhood maltreatment and bullying in addition to helping people enhance levels of social support and SES in later life.
    Journal of Happiness Studies 01/2013; 14(3). DOI:10.1007/s10902-012-9358-y · 1.88 Impact Factor
  • Takashi Oshio, Kunio Urakawa
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    ABSTRACT: Although earlier studies have demonstrated an association between neighbourhood perceptions and self-rated health, further study is needed regarding how this association is related to an individual's psychological attributes. Hence, we examined how self-rated health is associated with neighbourhood satisfaction after controlling for personality traits as well as other individual- and area-level covariates. We employed multilevel analysis using microdata collected from a nationwide Internet survey in Japan in 2011 (N = 8139). When controlling for personality traits, we observed that the odds for reporting poor health in response to neighbourhood dissatisfaction declined but remained highly significant. We obtained similar results when additionally controlling for sense of coherence (SOC) or replacing personality traits with it. We also found virtually no significant effect of personality traits or SOC on the sensitivity of self-rated health with neighbourhood dissatisfaction. Overall, this study indicated that the observed association between neighbourhood satisfaction and self-rated health tends to be overestimated, but cannot be fully explained by personality traits or SOC.
    Journal of Environmental Psychology 12/2012; 32(4):410-417. DOI:10.1016/j.jenvp.2012.07.003 · 2.40 Impact Factor
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    Masakazu Hojo, Takashi Oshio
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    ABSTRACT: This study investigates what factors determine students’ academic performance in 5 major Eastern Asian economies. It does so using data gathered through the 2007 Trends in International Mathematics and Science Study. In a regression analysis, we explicitly consider initial maturity differences, endogeneity of class size and peer effects. We find that a student's individual and family backgrounds are key determinants of educational performance, while institutional and resource variables have a more limited effect. Peer effects are significant in general, but ability-sorting at the school and/or class levels makes it difficult to interpret these effects in Hong Kong and Singapore.
    Asian Economic Journal 12/2012; 26(4). DOI:10.1111/j.1467-8381.2012.02087.x · 0.30 Impact Factor
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    ABSTRACT: In this study, we compare the association of marital satisfaction with the division of labor between husband and wife in Asia, based on Chinese, Japanese, and Korean General Social Surveys in 2006 (N = 2,346, 997, and 990, respectively). Results show that in all three countries, wives are less satisfied than husbands with marriage, mainly because wives do disproportionately more housework than husbands. Aside from this common gender difference, there are noticeable differences among the three countries. Chinese couples are relatively in favor of an egalitarian division of labor in terms of both market work and housework. Japanese couples are supportive of traditional specialization, with the wives flexibly shifting their efforts between market work and housework. Korean couples are under pressure from conflicts between the wife‘s labor force participation and the traditional division of labor in the household. 科学研究費補助金(特別推進研究) = Grant-in-Aid for Specially Promoted Research
    Journal of Family and Economic Issues 06/2012; 34(2). DOI:10.1007/s10834-012-9321-4
  • Takashi Oshio
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    ABSTRACT: The purpose of this study was to investigate gender differences in the associations of life satisfaction with family and social relations among the Japanese elderly. Ordered logit models were estimated to explain life satisfaction with a rich set of explanatory variables, using micro data of 3,277 elderly Japanese adults (1,679 men and 1,598 women) collected from the first-wave sample from the Japanese Study of Aging and Retirement (JSTAR). This study found that men are less satisfied with life when living without their spouse; women are less satisfied with life when they live and/or have close relations with their parents-in-law; coresidence with an unmarried son is negatively associated with life satisfaction for both men and women; and, a larger number of friends and social activities enhance life satisfaction for women but not for men. Men are more sensitive than women to overall family relations, while the relative importance of social relations is higher for women. These results confirmed gender differences in the associations of life satisfaction with family and social relations in Japan-a nation characterized by a gender-asymmetric society and multi-generational family settings.
    Journal of Cross-Cultural Gerontology 05/2012; 27(3):259-74. DOI:10.1007/s10823-012-9169-y
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    ABSTRACT: The Japanese Longitudinal Survey on Employment and Fertility (LOSEF): the 2011 Internet Version was composed of 3 elements undertaken simultaneously via the Internet: 1) creation of a panel data set from transcription of administrative data (history of pension enrolment, salary history, etc.) contained in Social Security Statements; 2) a retrospective panel survey based on the items contained therein (such as career changes, marriage, childbirth, whether or not residing with parents, etc.); and 3) a survey on many other questions relating to current living and working circumstances. In addition to offering an overview of the 2011 Internet Version, this paper compares its basic figures with those from public statistical surveys, thereby elucidating some characteristics of the survey respondents, such as sample selection bias in this survey. Although some bias toward those with higher educational backgrounds was observed, our study confirmed that this survey represents the collection at a single stroke of almost perfect panel data spanning 45 years at maximum. Acquisition of this sort of long-term, almost flawless panel data is unprecedented in Japan— even worldwide, few such examples exist—making this an extremely rare opportunity.
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    Akiko Sato Oishi, Takashi Oshio
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    ABSTRACT: No abstract available.
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    Takashi Oshio, Maki Umeda, Mayu Fujii
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    ABSTRACT: Previous studies have provided evidence of the lasting impact of low socioeconomic status (SES) in childhood on adulthood health. However, the mediating pathway that links them is still under debate. In this study, we examine how educational attainment, household income, and social support mediate the impact of low SES in childhood on self-rated health and health-risk behaviors in adulthood on the basis of micro data collected from a survey in municipalities in and around the Tokyo metropolitan area in Japan (N = 3,265). As a comprehensive measure for childhood SES, we utilized a binary variable of childhood poverty constructed from the retrospective assessment of the living standard at the age of 15. We estimated recursive bivariate probit models that consisted of (1) the main equation to predict adulthood health outcome by childhood poverty and other variables and (2) the auxiliary equation to predict childhood poverty by parental SES. This method allowed us both to capture a wide dimension of childhood SES and to mitigate the potential recall bias to the retrospective assessment of the past living standard. We observed that educational attainment, household income, and social support, when combined, mediated 35-55 percent of the impact of childhood poverty on adulthood SRH and health-risk behaviors, confirming the substantial magnitude of mediation. However, a large proportion of the impact was unexplained by these mediating effects, underscoring the importance of social policies aimed at reducing risks of childhood poverty.
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    ABSTRACT: No abstract available.

Publication Stats

169 Citations
29.61 Total Impact Points

Institutions

  • 2004–2015
    • Hitotsubashi University
      • Institute of Economic Research
      Edo, Tōkyō, Japan
    • National Institute of Population and Social Security Research
      Edo, Tōkyō, Japan
  • 1997–2012
    • Kobe University
      • • Faculty of Economics
      • • Graduate School of Economics
      Kōbe, Hyōgo, Japan