Examinando por Autor "Corsi, Daniel J."

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  • Publicación
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    Availability and affordability of cardiovascular disease medicines and their effect on use in high-income, middle-income, and low-income countries. An analysis of the PURE study data
    (ScienceDirect, 2016-10-05) Miller, Victoria; Yusuf, Salim; Chow, Clara K.; Dehghan, Mahshid; Corsi, Daniel J.; Lock, Karen; Popkin, Barry; Rangarajan, Sumathy; Khatib, Rasha; Lear, Scott A.; Mony, Prem; Kaur, Manmeet; Mohan, Viswanathan; Vijayakumar, Krishnapillai; Gupta, Rajeev; Kruger, Annamarie; Tsolekile, Lungiswa; Mohammadifard, Noushin; Rahman, Omar; Rosengren, Annika; Avezum, Alvaro; Orlandini, Andrés; Ismail, Noorhassim; Lopez-Jaramillo, Patricio; Yusufali, Afzalhussein; Karsidag, Kubilay; Iqbal, Romaina; Chifamba, Jephat; Oakley, Solange Martinez; Ariffin, Farnaza; Zatonska, Katarzyna; Poirier, Paul; Wei, Li; Jian, Bo; Hui, Chen; Xu, Liu; Xiulin, Bai; Teo, Koon; Mente, Andrew; Masira
    Methods We assessed fruit and vegetable consumption using data from country-specific, validated semi-quantitative food frequency questionnaires in the Prospective Urban Rural Epidemiology (PURE) study, which enrolled participants from communities in 18 countries between Jan 1, 2003, and Dec 31, 2013. We documented household income data from participants in these communities; we also recorded the diversity and non-sale prices of fruits and vegetables from grocery stores and market places between Jan 1, 2009, and Dec 31, 2013. We determined the cost of fruits and vegetables relative to income per household member. Linear random effects models, adjusting for the clustering of households within communities, were used to assess mean fruit and vegetable intake by their relative cost. Findings Of 143 305 participants who reported plausible energy intake in the food frequency questionnaire, mean fruit and vegetable intake was 3·76 servings (95% CI 3·66–3·86) per day. Mean daily consumption was 2·14 servings (1·93–2·36) in low-income countries (LICs), 3·17 servings (2·99–3·35) in lower-middle-income countries (LMICs), 4·31 servings (4·09–4·53) in upper-middle-income countries (UMICs), and 5·42 servings (5·13–5·71) in high-income countries (HICs). In 130 402 participants who had household income data available, the cost of two servings of fruits and three servings of vegetables per day per individual accounted for 51·97% (95% CI 46·06–57·88) of household income in LICs, 18·10% (14·53–21·68) in LMICs, 15·87% (11·51–20·23) in UMICs, and 1·85% (−3·90 to 7·59) in HICs (ptrend=0·0001). In all regions, a higher percentage of income to meet the guidelines was required in rural areas than in urban areas (p<0·0001 for each pairwise comparison). Fruit and vegetable consumption among individuals decreased as the relative cost increased (ptrend=0·00040). Interpretation The consumption of fruit and vegetables is low worldwide, particularly in LICs, and this is associated with low affordability. Policies worldwide should enhance the availability and affordability of fruits and vegetables.
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    Availability, affordability, and consumption of fruits and vegetables in 18 countries across income levels : Findings from the Prospective Urban Rural Epidemiology (PURE) study
    (2016-08-23) Lopez-Jaramillo, Patricio; Mente, Andrew; Teo, Koon; Xiulin, Bai; Xu, Liu; Hui, Chen; Jian, Bo; Wei, Li; Poirier, Paul P.; Zatonska, Katarzyna; Ariffin, Farnaza; Martinez Oakley, Solange; Chifamba, Jephat; Iqbal, Romaina; Karsidag, Kubilay; Yusufali, Afzalhussein; Ismail, Noorhassim; Orlandini, Andres; Avezum, Alvaro; Rosengren, Annika; Rahman, Omar; Mohammadifard, Noushin; Tsolekile, Lungiswa P.; Kruger, Annamarie; Gupta, Rajeev; Vijayakumar, Krishnapillai; Mohan, Viswanathan; Kaur, Manmeet; Mony, Prem; Lear, Scott A.; Khatib, Rasha; Rangarajan, Sumathy; Popkin, Barry; Lock, Karen; Corsi, Daniel J.; Dehghan, Mahshid; Chow, Clara K.; Yusuf, Salim; Miller, Victoria
    Background Several international guidelines recommend the consumption of two servings of fruits and three servings of vegetables per day, but their intake is thought to be low worldwide. We aimed to determine the extent to which such low intake is related to availability and aff ordability. Methods We assessed fruit and vegetable consumption using data from country-specific, validated semi-quantitative food frequency questionnaires in the Prospective Urban Rural Epidemiology (PURE) study, which enrolled participants from communities in 18 countries between Jan 1, 2003, and Dec 31, 2013. We documented household income data from participants in these communities; we also recorded the diversity and non-sale prices of fruits and vegetables from grocery stores and market places between Jan 1, 2009, and Dec 31, 2013. We determined the cost of fruits and vegetables relative to income per household member. Linear random eff ects models, adjusting for the clustering of households within communities, were used to assess mean fruit and vegetable intake by their relative cost. Findings Of 143 305 participants who reported plausible energy intake in the food frequency questionnaire, mean fruit and vegetable intake was 3·76 servings (95% CI 3·66–3·86) per day. Mean daily consumption was 2·14 servings (1·93–2·36) in low-income countries (LICs), 3·17 servings (2·99–3·35) in lower-middle-income countries (LMICs), 4·31 servings (4·09–4·53) in upper-middle-income countries (UMICs), and 5·42 servings (5·13–5·71) in highincome countries (HICs). In 130 402 participants who had household income data available, the cost of two servings of fruits and three servings of vegetables per day per individual accounted for 51·97% (95% CI 46·06–57·88) of household income in LICs, 18·10% (14·53–21·68) in LMICs, 15·87% (11·51–20·23) in UMICs, and 1·85% (–3·90 to 7·59) in HICs (ptrend=0·0001). In all regions, a higher percentage of income to meet the guidelines was required in rural areas than in urban areas (p<0·0001 for each pairwise comparison). Fruit and vegetable consumption among individuals decreased as the relative cost increased ptrend=0·00040). Interpretation The consumption of fruit and vegetables is low worldwide, particularly in LICs, and this is associated with low aff ordability. Policies worldwide should enhance the availability and aff ordability of fruits and vegetables. Funding Population Health Research Institute, the Canadian Institutes of Health Research, Heart and Stroke Foundation of Ontario, AstraZeneca (Canada), Sanofi -Aventis (France and Canada), Boehringer Ingelheim (Germany and Canada), Servier, GlaxoSmithKline, Novartis, King Pharma, and national or local organisations in participating countries.
  • Publicación
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    Environmental Profile of a Community's Health (EPOCH) : An Ecometric Assessment of Measures of the Community Environment Based on Individual Perception
    (2012-09-04) Corsi, Daniel J.; Subramanian, S. V.; McKee, Martin; Li, Wei; Swaminathan, Sumathi; Lopez-Jaramillo, Patricio; Avezum, Alvaro; Lear, Scott A.; Dagenais, Gilles; Rangarajan, Sumathy; Teo, Koon; Yusuf, Salim; Chow, Clara K.
    Background: Public health research has turned towards examining upstream, community-level determinants of cardiovascular disease risk factors. Objective measures of the environment, such as those derived from direct observation, and perception-based measures by residents have both been associated with health behaviours. However, current methods are generally limited to objective measures, often derived from administrative data, and few instruments have been evaluated for use in rural areas or in low-income countries. We evaluate the reliability of a quantitative tool designed to capture perceptions of community tobacco, nutrition, and social environments obtained from interviews with residents in communities in 5 countries. Methodology/ Principal Findings: Thirteen measures of the community environment were developed from responses to questionnaire items from 2,360 individuals residing in 84 urban and rural communities in 5 countries (China, India, Brazil, Colombia, and Canada) in the Environmental Profile of a Community’s Health (EPOCH) study. Reliability and other properties of the community-level measures were assessed using multilevel models. High reliability (.0.80) was demonstrated for all community-level measures at the mean number of survey respondents per community (n = 28 respondents). Questionnaire items included in each scale were found to represent a common latent factor at the community level in multilevel factor analysis models. Conclusions/ Significance: Reliable measures which represent aspects of communities potentially related to cardiovascular disease (CVD)/risk factors can be obtained using feasible sample sizes. The EPOCH instrument is suitable for use in different settings to explore upstream determinants of CVD/risk factors.
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    Environmental profile of a community's health (EPOCH) : An instrument to measure environmental determinants of cardiovascular health in five countries
    (2010-12-10) Chow, Clara K.; Lock, Karen; Madhavan, Manisha; Corsi, Daniel J.; Gilmore, Anna B.; Subramanian, S. V.; Li, Wei; Swaminathan, Sumathi; Lopez-Jaramillo, Patricio; Avezum, Alvaro; Lear, Scott A.; Dagenais, Gilles; Teo, Koon; McKee, Martin; Yusuf, Salim
    Background: The environment in which people live is known to be important in influencing diet, physical activity, smoking, psychosocial and other risk factors for cardiovascular (CV) disease. However no instrument exists that evaluates communities for these multiple environmental factors and is suitable for use across different communities, regions and countries. This report describes the design and reliability of an instrument to measure environmental determinants of CV risk factors. Method/Principal Findings: The Environmental Profile of Community Health (EPOCH) instrument comprises two parts: (I) an assessment of the physical environment, and (II) an interviewer-administered questionnaire to collect residents’ perceptions of their community. We examined the inter-rater reliability amongst 3 observers from each region of the direct observation component of the instrument (EPOCH I) in 93 rural and urban communities in 5 countries (Canada, Colombia, Brazil, China and India). Data collection using the EPOCH instrument was feasible in all communities. Reliability of the instrument was excellent (Intraclass Correlation Coefficient - ICC.0.75) for 24 of 38 items and fair to good (ICC 0.4–0.75) for 14 of 38 items. Conclusion: This report shows data collection with the EPOCH instrument is feasible and direct observation of community measures reliable. The EPOCH instrument will enable further research on environmental determinants of health for population studies from a broad range of settings.
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    A novel method to evaluate the community built environment using photographs - Environmental profile of a community health (Epoch) Photo neighbourhood evaluation tool
    (2014-11-04) Chow, Clara K.; Corsi, Daniel J.; Lock, Karen; Madhavan, Manisha; Mackie, Pam; Li, Wei; Yi, Sun; Wang, Yang; Swaminathan, Sumathi; Lopez-Jaramillo, Patricio; Gómez Arbeláez, Diego; Avezum, Alvaro; Lear, Scott A.; Dagenais, Gilles; Teo, Koon; McKee, Martin; Yusuf, Salim
    Background: Previous research has shown that environments with features that encourage walking are associated with increased physical activity. Existing methods to assess the built environment using geographical information systems (GIS) data, direct audit or large surveys of the residents face constraints, such as data availability and comparability, when used to study communities in countries in diverse parts of the world. The aim of this study was to develop a method to evaluate features of the built environment of communities using a standard set of photos. In this report we describe the method of photo collection, photo analysis instrument development and inter-rater reliability of the instrument. Methods/Principal Findings: A minimum of 5 photos were taken per community in 86 communities in 5 countries according to a standard set of instructions from a designated central point of each community by researchers at each site. A standard pro forma derived from reviewing existing instruments to assess the built environment was developed and used to score the characteristics of each community. Photo sets from each community were assessed independently by three observers in the central research office according to the pro forma and the inter-rater reliability was compared by intra-class correlation (ICC). Overall 87% (53 of 60) items had an ICC of $0.70, 7% (4 of 60) had an ICC between 0.60 and 0.70 and 5% (3 of 60) items had an ICC #0.50. Conclusions/Significance: Analysis of photos using a standardized protocol as described in this study offers a means to obtain reliable and reproducible information on the built environment in communities in very diverse locations around the world. The collection of the photographic data required minimal training and the analysis demonstrated high reliability for the majority of items of interest.
  • Publicación
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    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.
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    Wealth and cardiovascular health : A cross-sectional study of wealth-related inequalities in the awareness, treatment and control of hypertension in high-, middle- and low-income countries
    (2016-12-08) Lopez-Jaramillo, Patricio; Palafox, Benjamin; Balabanova, Dina; AlHabib, Khalid F.; Avezum, Alvaro; Bahonar, Ahmad; Ismail, Noorhassim; Chifamba, Jephat; Chow, Clara K.; Corsi, Daniel J.; Dagenais, Gilles; Diaz, Rafael; Gupta, Rajeev; Iqbal, Romaina; Kaur, Manmeet; Khatib, Rasha; Kruger, Annamarie; Kruger, Iolanthe Marike; Lanas, Fernando; Minfan, Fu; Mohan, Viswanathan; Mony, Prem; Oguz, Aytekin; Palileo Villaneuva, Lia; Perel, Pablo; Poirier, Paul P.; Rangarajan, Sumathy; Rensheng, Lei; Rosengren, Annika; Soman, Biju; Stuckler, David; Subramanian, S. V.; Teo, Koon; Tsolekile, Lungiswa P.; Wielgosz, Andreas; Yaguang, Peng; Yeates, Karen; Yongzhen, Mo; Yusoff, Khalid; Yusuf, Rita; Yusufali, Afzalhussein; Zatonska, Katarzyna; Yusuf, Salim
    Background Effective policies to control hypertension require an understanding of its distribution in the population and the barriers people face along the pathway from detection through to treatment and control. One key factor is household wealth, which may enable or limit a household’s ability to access health care services and adequately control such a chronic condition. This study aims to describe the scale and patterns of wealth-related inequalities in the awareness, treatment and control of hypertension in 21 countries using baseline data from the Prospective Urban and Rural Epidemiology study. Methods A cross-section of 163,397 adults aged 35 to 70 years were recruited from 661 urban and rural communities in selected low-, middle- and high-income countries (complete data for this analysis from 151,619 participants). Using blood pressure measurements, self-reported health and household data, concentration indices adjusted for age, sex and urban-rural location, we estimate the magnitude of wealth-related inequalities in the levels of hypertension awareness, treatment, and control in each of the 21 country samples. Results Overall, the magnitude of wealth-related inequalities in hypertension awareness, treatment, and control was observed to be higher in poorer than in richer countries. In poorer countries, levels of hypertension awareness and treatment tended to be higher among wealthier households; while a similar pro-rich distribution was observed for hypertension control in countries at all levels of economic development. In some countries, hypertension awareness was greater among the poor (Sweden, Argentina, Poland), as was treatment (Sweden, Poland) and control (Sweden). Conclusion Inequality in hypertension management outcomes decreased as countries became richer, but the considerable variation in patterns of wealth-related inequality - even among countries at similar levels of economic development - underscores the importance of health systems in improving hypertension management for all. These findings show that some, but not all, countries, including those with limited resources, have been able to achieve more equitable management of hypertension; and strategies must be tailored to national contexts to achieve optimal impact at population level.