Examinando por Materia "Household"

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    Long-term exposure to outdoor and household air pollution and blood pressure in the Prospective Urban and Rural Epidemiological (PURE) study
    (Elsevier, 2020-03-24) Arku, Raphael E.; Brauer, Michael; Ahmed, Suad H.; AlHabib, Khalid F.; Avezum, Álvaro; Bo, Jian; Choudhury, Tarzia; Dans, Antonio; Gupta, Rajeev; Iqbal, Romaina; Ismail, Noorhassim; Kelishadi, Roya; Khatib, Rasha; Koon, Teo; Kumar, Rajesh; Lanas, Fernando; Lear, Scott A.; Wei, Li; Lopez-Jaramillo, Patricio; Mohan, Viswanathan; Poirier, Paul; Puoane, Thandi; Rangarajan, Sumathy; Rosengren, Annika; Soman, Biju; Caklili, Ozge Telci; Yang, Shunyun; Yeates, Karen; Yin, Lu; Yusoff, Khalid; Zatoński, Tomasz; Yusuf, Salim; Hystad, Perry; Everest
    Exposure to air pollution has been linked to elevated blood pressure (BP) and hypertension, but most research has focused on short-term (hours, days, or months) exposures at relatively low concentrations. We examined the associations between long-term (3-year average) concentrations of outdoor PM2.5 and household air pollution (HAP) from cooking with solid fuels with BP and hypertension in the Prospective Urban and Rural Epidemiology (PURE) study. Outdoor PM2.5 exposures were estimated at year of enrollment for 137,809 adults aged 35–70 years from 640 urban and rural communities in 21 countries using satellite and ground-based methods. Primary use of solid fuel for cooking was used as an indicator of HAP exposure, with analyses restricted to rural participants (n = 43,313) in 27 study centers in 10 countries. BP was measured following a standardized procedure and associations with air pollution examined with mixed-effect regression models, after adjustment for a comprehensive set of potential confounding factors. Baseline outdoor PM2.5 exposure ranged from 3 to 97 μg/m3 across study communities and was associated with an increased odds ratio (OR) of 1.04 (95% CI: 1.01, 1.07) for hypertension, per 10 μg/m3 increase in concentration. This association demonstrated non-linearity and was strongest for the fourth (PM2.5 > 62 μg/m3) compared to the first (PM2.5 < 14 μg/m3) quartiles (OR = 1.36, 95% CI: 1.10, 1.69). Similar non-linear patterns were observed for systolic BP (β = 2.15 mmHg, 95% CI: −0.59, 4.89) and diastolic BP (β = 1.35, 95% CI: −0.20, 2.89), while there was no overall increase in ORs across the full exposure distribution. Individuals who used solid fuels for cooking had lower BP measures compared to clean fuel users (e.g. 34% of solid fuels users compared to 42% of clean fuel users had hypertension), and even in fully adjusted models had slightly decreased odds of hypertension (OR = 0.93; 95% CI: 0.88, 0.99) and reductions in systolic (−0.51 mmHg; 95% CI: −0.99, −0.03) and diastolic (−0.46 mmHg; 95% CI: −0.75, −0.18) BP. In this large international multi-center study, chronic exposures to outdoor PM2.5 was associated with increased BP and hypertension while there were small inverse associations with HAP.
  • Publicación
    Acceso abierto
    Prospective Urban Rural Epidemiology (PURE) study : Baseline characteristics of the household sample and comparative analyses with national data in 17 countries
    (2013-10) Corsi, Daniel J.; Subramanian, S. V.; Chow, Clara K.; McKee, Martin; Chifamba, Jephat; Dagenais, Gilles; Diaz, Rafael; Iqbal, Romaina; Kelishadi, Roya; Kruger, Annamarie; Lanas, Fernando; Lopez-Jaramillo, Patricio; Mony, Prem; Mohan, Viswanathan; Avezum, Alvaro; Oguz, Aytekin; Rahman, M. Omar; Rosengren, Annika; Szuba, Andrej; Li, Wei; Yusoff, Khalid; Yusufali, Afzalhussein; Rangarajan, Sumathy; Teo, Koon; Yusuf, Salim
    Background The PURE study was established to investigate associations between social, behavioural, genetic, and environmental factors and cardiovascular diseases in 17 countries. In this analysis we compare the age, sex, urban/rural, mortality, and educational profiles of the PURE participants to national statistics. Methods PURE employed a community-based sampling and recruitment strategy where urban and rural communities were selected within countries. Within communities, representative samples of adults aged 35 to 70 years and their household members (n = 424,921) were invited for participation. Results The PURE household population compared to national statistics had more women (sex ratio 95.1 men per 100 women vs 100.3) and was older (33.1 years vs 27.3), although age had a positive linear relationship between the two data sources (Pearson's r = 0.92). PURE was 59.3% urban compared to an average of 63.1% in participating countries. The distribution of education was less than 7% different for each category, although PURE households typically had higher levels of education. For example, 37.8% of PURE household members had completed secondary education compared to 31.3% in the national data. Age-adjusted annual mortality rates showed positive correlation for men (r = 0.91) and women (r = 0.92) but were lower in PURE compared to national statistics (7.9 per 1000 vs 8.7 for men; 6.7 vs 8.1 for women). Conclusions These findings indicate that modest differences exist between the PURE household population and national data for the indicators studied. These differences, however, are unlikely to have much influence on exposure-disease associations derived in PURE. Further, incidence estimates from PURE, stratified according to sex and/or urban/rural location will enable valid comparisons of the relative rates of various cardiovascular outcomes across countries.