Examinando por Autor "Lock, Karen"

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  • Publicación
    Acceso abierto
    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.
  • Publicación
    Restringido
    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
    Restringido
    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.
  • Publicación
    Restringido
    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.