English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Background  The shape of the exposure-response curve for long-term ambient fine particulate (PM 2.5 ) exposure and cause-specific mortality is poorly understood, especially for rural populations and underrepresented minorities.    Methods  We used hybrid machine learning and Cox proportional hazard models to assess the association of long-term PM 2.5  exposures on specific causes of death for 53 million U.S. Medicare beneficiaries (aged ≥65) from 2000 to 2008. Models included strata for age, sex, race, and ZIP code and controlled for neighborhood socio-economic status (SES) in our main analyses, with approximately 4 billion person-months of follow-up, and additionally for warm season average of 1-h daily maximum ozone exposures in a sensitivity analysis. The impact of non-traffic PM 2.5  on mortality was examined using two stage models of PM 2.5  and nitrogen dioxide (NO 2 ).    Results  A 10  μg  /m 3  increase in 12-month average PM 2.5  prior to death was associated with a 5% increase in all-cause mortality, as well as an 8.8, 5.6, and 2.5% increase in all cardiovascular disease (CVD)-, all respiratory-, and all cancer deaths, respectively, in age, gender, race, ZIP code, and SES-adjusted models. PM 2.5  exposures, however, were not associated with lung cancer mortality. Results were not sensitive to control for ozone exposures. PM 2.5 -mortality associations for CVD- and respiratory-related causes were positive and significant for beneficiaries irrespective of their sex, race, age, SES and urbanicity, with no evidence of a lower threshold for response or of lower Risk Ratios (RRs) at low PM 2.5  levels. Associations between PM 2.5  and CVD and respiratory mortality were linear and were higher for younger, Black and urban beneficiaries, but were largely similar by SES. Risks associated with non-traffic PM 2.5  were lower than that for all PM 2.5  and were null for respiratory and lung cancer-related deaths.    Conclusions  PM 2.5  was associated with mortality from CVD, respiratory, and all cancer, but not lung cancer. PM 2.5 -associated risks of CVD and respiratory mortality were similar across PM 2.5  levels, with no evidence of a threshold. Blacks, urban, and younger beneficiaries were most vulnerable to the long-term impacts of PM 2.5  on mortality.

environmental health

The impact of long-term PM2.5 exposure on specific causes of death: exposure-response curves and effect modification among 53 million U.S. Medicare beneficiaries