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Article: Outdoor light at night and risk of coronary heart disease among older adults: a prospective cohort study

TitleOutdoor light at night and risk of coronary heart disease among older adults: a prospective cohort study
Authors
KeywordsLight at night
Cohort study
Coronary heart disease
Mortality
Hospitalization
Issue Date2021
PublisherOxford University Press. The Journal's web site is located at http://eurheartj.oxfordjournals.org/
Citation
European Heart Journal, 2021, v. 42 n. 8, p. 822-830 How to Cite?
AbstractAims: We estimated the association between outdoor light at night at the residence and risk of coronary heart disease (CHD) within a prospective cohort of older adults in Hong Kong. Methods and results: Over a median of 11 years of follow-up, we identified 3772 incident CHD hospitalizations and 1695 CHD deaths. Annual levels of outdoor light at night at participants’ residential addresses were estimated using time-varying satellite data for a composite of persistent night-time illumination at ∼1 km2 scale. We used Cox proportional hazards models to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) of the association between outdoor light at night at the residence and risk of CHD. The association between light at night and incident CHD hospitalization and mortality exhibited a monotonic exposure-response function. An interquartile range (IQR) (60.0 nW/cm2/sr) increase in outdoor light at night was associated with an HR of 1.11 (95% CI: 1.03, 1.18) for CHD hospitalizations and 1.10 (95% CI: 1.00, 1.22) for CHD deaths after adjusting for both individual and area-level risk factors. The association did not vary across strata of hypothesized risk factors. Conclusion: Among older adults, outdoor light at night at the residence was associated with a higher risk of CHD hospitalizations and deaths. We caution against causal interpretation of these novel findings. Future studies with more detailed information on exposure, individual adaptive behaviours, and potential mediators are warranted to further examine the relationship between light at night and CHD risk.
Persistent Identifierhttp://hdl.handle.net/10722/296379
ISSN
2020 Impact Factor: 29.983
2020 SCImago Journal Rankings: 4.336
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, S-
dc.contributor.authorCao, W-
dc.contributor.authorGe, Y-
dc.contributor.authorRan, J-
dc.contributor.authorSun, F-
dc.contributor.authorZeng, Q-
dc.contributor.authorGuo, M-
dc.contributor.authorHuang, J-
dc.contributor.authorLee, RS-
dc.contributor.authorTian, L-
dc.contributor.authorWellenius, GA-
dc.date.accessioned2021-02-22T04:54:27Z-
dc.date.available2021-02-22T04:54:27Z-
dc.date.issued2021-
dc.identifier.citationEuropean Heart Journal, 2021, v. 42 n. 8, p. 822-830-
dc.identifier.issn0195-668X-
dc.identifier.urihttp://hdl.handle.net/10722/296379-
dc.description.abstractAims: We estimated the association between outdoor light at night at the residence and risk of coronary heart disease (CHD) within a prospective cohort of older adults in Hong Kong. Methods and results: Over a median of 11 years of follow-up, we identified 3772 incident CHD hospitalizations and 1695 CHD deaths. Annual levels of outdoor light at night at participants’ residential addresses were estimated using time-varying satellite data for a composite of persistent night-time illumination at ∼1 km2 scale. We used Cox proportional hazards models to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) of the association between outdoor light at night at the residence and risk of CHD. The association between light at night and incident CHD hospitalization and mortality exhibited a monotonic exposure-response function. An interquartile range (IQR) (60.0 nW/cm2/sr) increase in outdoor light at night was associated with an HR of 1.11 (95% CI: 1.03, 1.18) for CHD hospitalizations and 1.10 (95% CI: 1.00, 1.22) for CHD deaths after adjusting for both individual and area-level risk factors. The association did not vary across strata of hypothesized risk factors. Conclusion: Among older adults, outdoor light at night at the residence was associated with a higher risk of CHD hospitalizations and deaths. We caution against causal interpretation of these novel findings. Future studies with more detailed information on exposure, individual adaptive behaviours, and potential mediators are warranted to further examine the relationship between light at night and CHD risk.-
dc.languageeng-
dc.publisherOxford University Press. The Journal's web site is located at http://eurheartj.oxfordjournals.org/-
dc.relation.ispartofEuropean Heart Journal-
dc.subjectLight at night-
dc.subjectCohort study-
dc.subjectCoronary heart disease-
dc.subjectMortality-
dc.subjectHospitalization-
dc.titleOutdoor light at night and risk of coronary heart disease among older adults: a prospective cohort study-
dc.typeArticle-
dc.identifier.emailHuang, J: jxhuang@hku.hk-
dc.identifier.emailTian, L: linweit@hku.hk-
dc.identifier.authorityHuang, J=rp01758-
dc.identifier.authorityTian, L=rp01991-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1093/eurheartj/ehaa846-
dc.identifier.pmid33205210-
dc.identifier.scopuseid_2-s2.0-85102213830-
dc.identifier.hkuros321401-
dc.identifier.volume42-
dc.identifier.issue8-
dc.identifier.spage822-
dc.identifier.epage830-
dc.identifier.isiWOS:000646253100007-
dc.publisher.placeUnited Kingdom-

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