Association of work situation with cardiovascular disease mortality risk among working-age Japanese men

A 20-year follow-up of NIPPON DATA90

NIPPON DATA90 Research Group

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Background: Several cohort studies have demonstrated an association between socioeconomic status (SES) and health outcomes in Japan. As long-term employment is common in Japan, the size of the company may be related to cardiovascular disease (CVD) mortality risk. We examined the association of employment conditions with CVD mortality risk among working-age Japanese men (30–59 years, n=2,091). Methods and Results: We used 20-year follow-up data from NIPPON DATA90, for which baseline data were obtained from the 4th National Survey on Circulatory Disorders in 1990. Participants were classified into 4 groups: 3 strata for indefinite-term employees according to company size (large company/public office, moderate-sized, or small), and the self-employed/administrator group. Multivariable-adjusted hazard ratios (HRs) were adjusted for age, lifestyle, and CVD risk factors. Smokers were more common, habitual exercise was less common, and the average systolic blood pressure was higher among indefinite-term employees of small companies compared with employees at large companies/public offices. There was no significant difference in the total CVD mortality risk between indefinite-term employees and self-employed/administrator participants. The age-adjusted HR (95% confidence interval) for total CVD using indefinite-term employees of large companies/public office as a reference was 2.53 (1.12, 5.69) for employees of small companies. Conclusions: Working as an indefinite-term employee at a small company in Japan was significantly associated with elevated risk of CVD mortality among Japanese men.

Original languageEnglish
Pages (from-to)1506-1513
Number of pages8
JournalCirculation Journal
Volume83
Issue number7
DOIs
Publication statusPublished - 2019 Jan 1

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Cardiovascular Diseases
Mortality
Japan
Administrative Personnel
Blood Pressure
Social Class
Life Style
Cohort Studies
Confidence Intervals
Exercise
Health

Keywords

  • Cardiovascular diseases
  • Cohort studies
  • Employment
  • Japanese men
  • Socioeconomic status

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Association of work situation with cardiovascular disease mortality risk among working-age Japanese men : A 20-year follow-up of NIPPON DATA90. / NIPPON DATA90 Research Group.

In: Circulation Journal, Vol. 83, No. 7, 01.01.2019, p. 1506-1513.

Research output: Contribution to journalArticle

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title = "Association of work situation with cardiovascular disease mortality risk among working-age Japanese men: A 20-year follow-up of NIPPON DATA90",
abstract = "Background: Several cohort studies have demonstrated an association between socioeconomic status (SES) and health outcomes in Japan. As long-term employment is common in Japan, the size of the company may be related to cardiovascular disease (CVD) mortality risk. We examined the association of employment conditions with CVD mortality risk among working-age Japanese men (30–59 years, n=2,091). Methods and Results: We used 20-year follow-up data from NIPPON DATA90, for which baseline data were obtained from the 4th National Survey on Circulatory Disorders in 1990. Participants were classified into 4 groups: 3 strata for indefinite-term employees according to company size (large company/public office, moderate-sized, or small), and the self-employed/administrator group. Multivariable-adjusted hazard ratios (HRs) were adjusted for age, lifestyle, and CVD risk factors. Smokers were more common, habitual exercise was less common, and the average systolic blood pressure was higher among indefinite-term employees of small companies compared with employees at large companies/public offices. There was no significant difference in the total CVD mortality risk between indefinite-term employees and self-employed/administrator participants. The age-adjusted HR (95{\%} confidence interval) for total CVD using indefinite-term employees of large companies/public office as a reference was 2.53 (1.12, 5.69) for employees of small companies. Conclusions: Working as an indefinite-term employee at a small company in Japan was significantly associated with elevated risk of CVD mortality among Japanese men.",
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author = "{NIPPON DATA90 Research Group} and Nagako Okuda and Aya Kadota and Nobuo Nishi and Katsuyuki Miura and Takayoshi Ohkubo and Naoko Miyagawa and Atsushi Satoh and Yoshikuni Kita and Takehito Hayakawa and Naoyuki Takashima and Akira Fujiyoshi and Akira Okayama and Tomonori Okamura and Hirotsugu Ueshima",
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T1 - Association of work situation with cardiovascular disease mortality risk among working-age Japanese men

T2 - A 20-year follow-up of NIPPON DATA90

AU - NIPPON DATA90 Research Group

AU - Okuda, Nagako

AU - Kadota, Aya

AU - Nishi, Nobuo

AU - Miura, Katsuyuki

AU - Ohkubo, Takayoshi

AU - Miyagawa, Naoko

AU - Satoh, Atsushi

AU - Kita, Yoshikuni

AU - Hayakawa, Takehito

AU - Takashima, Naoyuki

AU - Fujiyoshi, Akira

AU - Okayama, Akira

AU - Okamura, Tomonori

AU - Ueshima, Hirotsugu

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Background: Several cohort studies have demonstrated an association between socioeconomic status (SES) and health outcomes in Japan. As long-term employment is common in Japan, the size of the company may be related to cardiovascular disease (CVD) mortality risk. We examined the association of employment conditions with CVD mortality risk among working-age Japanese men (30–59 years, n=2,091). Methods and Results: We used 20-year follow-up data from NIPPON DATA90, for which baseline data were obtained from the 4th National Survey on Circulatory Disorders in 1990. Participants were classified into 4 groups: 3 strata for indefinite-term employees according to company size (large company/public office, moderate-sized, or small), and the self-employed/administrator group. Multivariable-adjusted hazard ratios (HRs) were adjusted for age, lifestyle, and CVD risk factors. Smokers were more common, habitual exercise was less common, and the average systolic blood pressure was higher among indefinite-term employees of small companies compared with employees at large companies/public offices. There was no significant difference in the total CVD mortality risk between indefinite-term employees and self-employed/administrator participants. The age-adjusted HR (95% confidence interval) for total CVD using indefinite-term employees of large companies/public office as a reference was 2.53 (1.12, 5.69) for employees of small companies. Conclusions: Working as an indefinite-term employee at a small company in Japan was significantly associated with elevated risk of CVD mortality among Japanese men.

AB - Background: Several cohort studies have demonstrated an association between socioeconomic status (SES) and health outcomes in Japan. As long-term employment is common in Japan, the size of the company may be related to cardiovascular disease (CVD) mortality risk. We examined the association of employment conditions with CVD mortality risk among working-age Japanese men (30–59 years, n=2,091). Methods and Results: We used 20-year follow-up data from NIPPON DATA90, for which baseline data were obtained from the 4th National Survey on Circulatory Disorders in 1990. Participants were classified into 4 groups: 3 strata for indefinite-term employees according to company size (large company/public office, moderate-sized, or small), and the self-employed/administrator group. Multivariable-adjusted hazard ratios (HRs) were adjusted for age, lifestyle, and CVD risk factors. Smokers were more common, habitual exercise was less common, and the average systolic blood pressure was higher among indefinite-term employees of small companies compared with employees at large companies/public offices. There was no significant difference in the total CVD mortality risk between indefinite-term employees and self-employed/administrator participants. The age-adjusted HR (95% confidence interval) for total CVD using indefinite-term employees of large companies/public office as a reference was 2.53 (1.12, 5.69) for employees of small companies. Conclusions: Working as an indefinite-term employee at a small company in Japan was significantly associated with elevated risk of CVD mortality among Japanese men.

KW - Cardiovascular diseases

KW - Cohort studies

KW - Employment

KW - Japanese men

KW - Socioeconomic status

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