Passive smoking and chronic obstructive pulmonary disease mortality: findings from the Japan collaborative cohort study

JACC Study Group

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Objectives: To elucidate the association between passive smoking at home and chronic obstructive pulmonary disease (COPD) mortality via a large-scale nationwide cohort study in Japan. Methods: Never smokers (n = 34,604) aged 40–79 years at baseline (1988–1990; 4884 men, 29,720 women) were included in the analysis. Passive smoking at home was measured based on self-reported frequency of weekly exposure to passive smoking at home. An inverse probability of treatment-weighted competing risk model was used to calculate the hazard ratio (HR) and 95% confidence interval (CI) for COPD mortality. Results: During a median follow-up of 16.4 years, 33 participants (10 men, 23 women) died of COPD. The HR for participants exposed to passive smoking at home ≤4 days per week or those who had almost daily exposure to passive smoking at home had a significantly increased risk of COPD mortality (HR 2.40, 95% CI 1.39–4.15, HR 2.88, 95% CI 1.68–4.93, respectively). Conclusions: The present findings suggest that avoiding passive smoking at home may be beneficial for preventing death due to COPD among never smokers.

Original languageEnglish
Pages (from-to)489-494
Number of pages6
JournalInternational Journal of Public Health
Volume62
Issue number4
DOIs
Publication statusPublished - 01-05-2017

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Tobacco Smoke Pollution
Chronic Obstructive Pulmonary Disease
Japan
Cohort Studies
Mortality
Confidence Intervals

All Science Journal Classification (ASJC) codes

  • Public Health, Environmental and Occupational Health

Cite this

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title = "Passive smoking and chronic obstructive pulmonary disease mortality: findings from the Japan collaborative cohort study",
abstract = "Objectives: To elucidate the association between passive smoking at home and chronic obstructive pulmonary disease (COPD) mortality via a large-scale nationwide cohort study in Japan. Methods: Never smokers (n = 34,604) aged 40–79 years at baseline (1988–1990; 4884 men, 29,720 women) were included in the analysis. Passive smoking at home was measured based on self-reported frequency of weekly exposure to passive smoking at home. An inverse probability of treatment-weighted competing risk model was used to calculate the hazard ratio (HR) and 95{\%} confidence interval (CI) for COPD mortality. Results: During a median follow-up of 16.4 years, 33 participants (10 men, 23 women) died of COPD. The HR for participants exposed to passive smoking at home ≤4 days per week or those who had almost daily exposure to passive smoking at home had a significantly increased risk of COPD mortality (HR 2.40, 95{\%} CI 1.39–4.15, HR 2.88, 95{\%} CI 1.68–4.93, respectively). Conclusions: The present findings suggest that avoiding passive smoking at home may be beneficial for preventing death due to COPD among never smokers.",
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Passive smoking and chronic obstructive pulmonary disease mortality : findings from the Japan collaborative cohort study. / JACC Study Group.

In: International Journal of Public Health, Vol. 62, No. 4, 01.05.2017, p. 489-494.

Research output: Contribution to journalArticle

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AU - Iso, Hiroyasu

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N2 - Objectives: To elucidate the association between passive smoking at home and chronic obstructive pulmonary disease (COPD) mortality via a large-scale nationwide cohort study in Japan. Methods: Never smokers (n = 34,604) aged 40–79 years at baseline (1988–1990; 4884 men, 29,720 women) were included in the analysis. Passive smoking at home was measured based on self-reported frequency of weekly exposure to passive smoking at home. An inverse probability of treatment-weighted competing risk model was used to calculate the hazard ratio (HR) and 95% confidence interval (CI) for COPD mortality. Results: During a median follow-up of 16.4 years, 33 participants (10 men, 23 women) died of COPD. The HR for participants exposed to passive smoking at home ≤4 days per week or those who had almost daily exposure to passive smoking at home had a significantly increased risk of COPD mortality (HR 2.40, 95% CI 1.39–4.15, HR 2.88, 95% CI 1.68–4.93, respectively). Conclusions: The present findings suggest that avoiding passive smoking at home may be beneficial for preventing death due to COPD among never smokers.

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