“Ikigai”, subjective wellbeing, as a modifier of the parity-cardiovascular mortality association ― the Japan collaborative cohort study ―

Sumiyo Yasukawa, Eri Eguchi, Keiki Ogino, Akiko Tamakoshi, Hiroyasu Iso

Research output: Contribution to journalArticle

Abstract

Background: Nulliparity is associated with an excess risk of cardiovascular disease (CVD). “Ikigai”, subjective wellbeing in Japan, is associated with reduced risk of CVD. The impact of ikigai on the association between parity and the risk of CVD, however, has not been reported. Methods and Results: A total of 39,870 Japanese women aged 40–79 years without a history of CVD, cancer or insufficient information at baseline in 1988–1990, were enrolled and followed until the end of 2009. They were categorized into 7 groups according to parity number 0–≥6. Using Cox regression hazard modeling, the associations between parity and mortality from stroke, coronary artery disease, and total CVD were investigated. During the follow-up period, 2,121 total CVD deaths were documented. No association was observed between parity and stroke and CVD mortality in women with ikigai, but there was an association in those without ikigai. The multivariable hazard ratios of stroke and total CVD mortality for nulliparous women without ikigai vs. those with 1 child were 1.87 (95% CI: 1.15–3.05) and 1.46 (95% CI: 1.07–2.01), respectively, and that for stroke mortality in high parity women without ikigai was 1.56 (95% CI: 1.00–2.45). Conclusions: Nulliparous or high parity women without ikigai had higher mortality from stroke and/or total CVD, suggesting that ikigai attenuated the association between parity and CVD mortality in Japanese women.

Original languageEnglish
Pages (from-to)1302-1308
Number of pages7
JournalCirculation Journal
Volume82
Issue number5
DOIs
Publication statusPublished - Jan 1 2018

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Parity
Japan
Cohort Studies
Cardiovascular Diseases
Mortality
Stroke
Coronary Artery Disease

Keywords

  • Cardiovascular disease
  • Ikigai
  • Mortality
  • Parity

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

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title = "“Ikigai”, subjective wellbeing, as a modifier of the parity-cardiovascular mortality association ― the Japan collaborative cohort study ―",
abstract = "Background: Nulliparity is associated with an excess risk of cardiovascular disease (CVD). “Ikigai”, subjective wellbeing in Japan, is associated with reduced risk of CVD. The impact of ikigai on the association between parity and the risk of CVD, however, has not been reported. Methods and Results: A total of 39,870 Japanese women aged 40–79 years without a history of CVD, cancer or insufficient information at baseline in 1988–1990, were enrolled and followed until the end of 2009. They were categorized into 7 groups according to parity number 0–≥6. Using Cox regression hazard modeling, the associations between parity and mortality from stroke, coronary artery disease, and total CVD were investigated. During the follow-up period, 2,121 total CVD deaths were documented. No association was observed between parity and stroke and CVD mortality in women with ikigai, but there was an association in those without ikigai. The multivariable hazard ratios of stroke and total CVD mortality for nulliparous women without ikigai vs. those with 1 child were 1.87 (95{\%} CI: 1.15–3.05) and 1.46 (95{\%} CI: 1.07–2.01), respectively, and that for stroke mortality in high parity women without ikigai was 1.56 (95{\%} CI: 1.00–2.45). Conclusions: Nulliparous or high parity women without ikigai had higher mortality from stroke and/or total CVD, suggesting that ikigai attenuated the association between parity and CVD mortality in Japanese women.",
keywords = "Cardiovascular disease, Ikigai, Mortality, Parity",
author = "Sumiyo Yasukawa and Eri Eguchi and Keiki Ogino and Akiko Tamakoshi and Hiroyasu Iso",
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T1 - “Ikigai”, subjective wellbeing, as a modifier of the parity-cardiovascular mortality association ― the Japan collaborative cohort study ―

AU - Yasukawa, Sumiyo

AU - Eguchi, Eri

AU - Ogino, Keiki

AU - Tamakoshi, Akiko

AU - Iso, Hiroyasu

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N2 - Background: Nulliparity is associated with an excess risk of cardiovascular disease (CVD). “Ikigai”, subjective wellbeing in Japan, is associated with reduced risk of CVD. The impact of ikigai on the association between parity and the risk of CVD, however, has not been reported. Methods and Results: A total of 39,870 Japanese women aged 40–79 years without a history of CVD, cancer or insufficient information at baseline in 1988–1990, were enrolled and followed until the end of 2009. They were categorized into 7 groups according to parity number 0–≥6. Using Cox regression hazard modeling, the associations between parity and mortality from stroke, coronary artery disease, and total CVD were investigated. During the follow-up period, 2,121 total CVD deaths were documented. No association was observed between parity and stroke and CVD mortality in women with ikigai, but there was an association in those without ikigai. The multivariable hazard ratios of stroke and total CVD mortality for nulliparous women without ikigai vs. those with 1 child were 1.87 (95% CI: 1.15–3.05) and 1.46 (95% CI: 1.07–2.01), respectively, and that for stroke mortality in high parity women without ikigai was 1.56 (95% CI: 1.00–2.45). Conclusions: Nulliparous or high parity women without ikigai had higher mortality from stroke and/or total CVD, suggesting that ikigai attenuated the association between parity and CVD mortality in Japanese women.

AB - Background: Nulliparity is associated with an excess risk of cardiovascular disease (CVD). “Ikigai”, subjective wellbeing in Japan, is associated with reduced risk of CVD. The impact of ikigai on the association between parity and the risk of CVD, however, has not been reported. Methods and Results: A total of 39,870 Japanese women aged 40–79 years without a history of CVD, cancer or insufficient information at baseline in 1988–1990, were enrolled and followed until the end of 2009. They were categorized into 7 groups according to parity number 0–≥6. Using Cox regression hazard modeling, the associations between parity and mortality from stroke, coronary artery disease, and total CVD were investigated. During the follow-up period, 2,121 total CVD deaths were documented. No association was observed between parity and stroke and CVD mortality in women with ikigai, but there was an association in those without ikigai. The multivariable hazard ratios of stroke and total CVD mortality for nulliparous women without ikigai vs. those with 1 child were 1.87 (95% CI: 1.15–3.05) and 1.46 (95% CI: 1.07–2.01), respectively, and that for stroke mortality in high parity women without ikigai was 1.56 (95% CI: 1.00–2.45). Conclusions: Nulliparous or high parity women without ikigai had higher mortality from stroke and/or total CVD, suggesting that ikigai attenuated the association between parity and CVD mortality in Japanese women.

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