Sex disparity in cognitive aging related to later-life exposure to ambient air pollution.

Background: Sex difference in the association between ambient air pollution and cognitive aging remained unclear. This current study aimed to assess the impacts of long-term exposure to major air pollutants on cognitive performance among Chinese middle-aged and older adults, and explore whether these associations could be modified by sex.

Methods: By deriving longitudinal data from four waves of the China Health and Retirement Longitudinal Study, we included 13,507 participants aged 45+ years who had at least two cognitive tests recorded from 2011 to 2018.

Long-term exposure to ambient NO and adult mortality: A nationwide cohort study in China.

Introduction: A number of population-based studies have investigated long-term effects of nitrogen dioxide (NO) on mortality, while great heterogeneities exist between studies. In highly populated countries in Asia, cohort evidence for NO-mortality association was extensively sparse.

Objectives: This study aimed to quantify longitudinal association of ambient NO exposure with all-cause mortality in Chinese adults.

Association between residential greenness and obstructive sleep apnoea among adults in Southern China.

Background: No previous study has explored the association of residential greenness with obstructive sleep apnoea (OSA) indexes.

Objective: To investigate the association of exposure to residential greenness with OSA indexes in adults in Guangdong Province, Southern China.

Methods: From January 1, 2005 to December 31, 2015, a total of 3925 participants were recruited from the Sleep Center of Guangdong Provincial People's Hospital.

Longitudinal association of egg intake frequency with cardiovascular disease in Chinese adults.

Background And Aims: Reducing dietary cholesterol is generally acceptable for the prevention of cardiovascular disease (CVD). Eggs are nutrient-dense and common food items across the world, while rich in cholesterol. The potential effects of egg intake on cardiovascular health remain uncertainty and have been under debate in past decades.

Reduction in daily ambient PM pollution and potential life gain by attaining WHO air quality guidelines in Tehran.

Background: Fine particulate matter pollution (PM) is widely considered to be a top-ranked risk factor for premature mortality and years of life lost (YLL). However, evidence regarding the effect of daily air quality improvement on life expectancy is scarce, especially in the Middle East such as Iran. This study aimed to investigate the potential benefits in life expectancy at concentrations meeting the daily PM standards during 2012-2016 in Tehran, Iran.

Longitudinal Impacts of PM Constituents on Adult Mortality in China.

Limited evidence exists for long-term effects of PM constituents on mortality. Hence, we aimed to assess associations between all-cause mortality and long-term exposure to PM constituents in China. We designed a nationwide cohort study of 30524 adults from 162 prefectural areas across mainland China with follow-ups through years 2010-2017.

Assessing short-term impacts of PM constituents on cardiorespiratory hospitalizations: Multi-city evidence from China.

Apart from concentrations of particulate mass, PM-associated effects on health may largely depend on its chemical components. However, little is known regarding the underlying effects of specific PM constituents. The study included nearly 1 million hospital admissions from five Chinese cities during 2015-2017.

Comparative analysis of daily and hourly temperature variability in association with all-cause and cardiorespiratory mortality in 45 US cities.

Temperature variability (TV) has been widely associated with increased mortality risk and burden. Extensive researches have used the standard deviations of several days' daily maximum and minimum temperatures or hourly mean temperatures as daily and hourly TV measures (TV and TV). However, comparative analysis of daily and hourly TV related to cardiorespiratory mortality is still limited.

Long-term exposure to fine particulate constituents and cardiovascular diseases in Chinese adults.

Background: Ambient fine particulate matter (PM) has been linked to various cardiovascular disease (CVD) endpoints. However, little is known regarding the health effects of PM constituents. This study aimed to assess the associations of CVD incidence with long-term exposures to PM constituents in China, including black carbon (BC), organic matter (OM), sulfate (SO), nitrate (NO) and ammonium (NH).

Assessing PM-associated risk of hospitalization for COPD: an application of daily excessive concentration hours.

Existing PM-morbidity studies using daily mean concentration as exposure metric may fail to capture intra-day variations of PM concentrations, resulting in underestimated health impacts to some extent. This study introduced a novel indicator, daily excessive concentration hours (DECH), defined as sums of per-hourly excessive concentrations of PM against a specific threshold within a day. PM DECHs were separately calculated as daily concentration-hours >8, 10, 15, 20, and 25 μg/m (abbreviations: DECH-8, DECH-10, DECH-15, DECH-20, and DECH-25).

Intraday effects of ambient PM on emergency department visits in Guangzhou, China: A case-crossover study.

Background: Short-term exposure to PM has been widely associated with human morbidity and mortality. However, most up-to-date research was conducted at a daily timescale, neglecting the intra-day variations in both exposure and outcome. As an important fraction in PM, PM has not been investigated about the very acute effects within a few hours.