Socioeconomic Status Is Significantly Associated with the Dietary Intakes of Folate and Depression Scales in Japanese Workers (J-HOPE Study)

Nutrients

Koichi Miyaki²  Yixuan Song²  Setsuko Taneichi²  Akizumi Tsutsumi⁵  Hideki Hashimoto⁷  Norito Kawakami⁶  Masaya Takahashi¹  Akihito Shimazu⁶  Akiomi Inoue³  Sumiko Kurioka⁴ 

[1]National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki, Japan

[2] E-Mail:

[3]Division of Clinical Epidemiology, Department of Clinical Research and Informatics, National Center for Global Health and Medicine, Toyama 1-21-1, Shinjuku-ku, Tokyo, Japan

[4] E-Mails:

[5]Department of Mental Health, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahata-nishi-ku, Kitakyushu, Japan

[6] E-Mail:

[7]Department of Health Policy and Management, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahata-nishi-ku, Kitakyushu, Japan

[8] E-Mail:

[9]Department of Public Health, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, Japan

[10] E-Mail:

[11]Department of Mental Health, Tokyo University Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

[12] E-Mails:

[13]Department of Health Economics and Epidemiology Research, School of Public Health, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

[14] E-Mail:

关键词: socioeconomic status;    education;    household income;    folate intake;    depression;   

DOI  :  10.3390/nu5020565

来源: mdpi

【 摘 要 】

The association of socioeconomic status (SES) with nutrient intake attracts public attention worldwide. In the current study, we examined the associations of SES with dietary intake of folate and health outcomes in general Japanese workers. This Japanese occupational cohort consisted off 2266 workers. SES was assessed by a self-administered questionnaire. Intakes of all nutrients were assessed with a validated, brief and self-administered diet history questionnaire (BDHQ). The degree of depressive symptoms was measured by the validated Japanese version of the K6 scale. Multiple linear regression and stratified analysis were used to evaluate the associations of intake with the confounding factors. Path analysis was conducted to describe the impacts of intake on health outcomes. Education levels and household incomes were significantly associated with intake of folate and depression scales (p < 0.05). After adjusting for age, sex and total energy intake, years of education significantly affect the folate intake (β = 0.117, p < 0.001). The structural equation model (SEM) shows that the indirect effect of folate intake is statistically significant and strong (p < 0.05, 56% of direct effect) in the pathway of education level to depression scale. Our study shows both education and income are significantly associated with depression scales in Japanese workers, and the effort to increase the folate intake may alleviate the harms of social disparities on mental health.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.