Multiethnic Urban Population Research Articles

The Fun Families Study: Intervention to Reduce Children's TV Viewing

Media consumption may contribute to childhood obesity. This study developed and evaluated a theory-based, parent-focused intervention to reduce television and other media consumption to prevent and reduce childhood obesity. Families (n = 202) with children ages 6-9 were recruited from a large, urban multiethnic population into a randomized controlled trial (101 families into the intervention group and 101 into the control group), and were followed for 6 months. The intervention consisted of a 2-hour workshop and six bimonthly newsletters. Behavioral objectives included: (i) reduce TV watching; (ii) turn off TV when nobody is watching; (iii) no TV with meals; (iv) no TV in the child's bedroom; and (v) engage in fun non-media related activities. Parents were 89% female, 44% white, 28% African American, 17% Latino, and 11% Asian, mean age 40 years (s.d. = 7.5); 72% were married. Children were 49% female, mean age 8 years (s.d. = 0.95). Sixty-five percent of households had three or more TVs and video game players; 37% had at least one handheld video game, and 53% had three or more computers. Average children's weekday media exposure was 6.1 hours. At 6 months follow-up, the intervention group was less likely to report the TV being on when nobody was watching (adjusted odds ratio (AOR) = 0.23, P < 0.05), less likely to report eating snacks while watching TV (AOR = 0.47, P < 0.05), and less likely to have a TV in the child's bedroom (AOR = 0.23, P < 0.01). There was a trend toward reducing actual media consumption but these outcomes did not reach statistical significance. Effective strategies to reduce children's TV viewing were identified.

Ethnic differences in antenatal care use in a large multi-ethnic urban population in the Netherlands

Objective to determine differences in antenatal care use between the native population and different ethnic minority groups in the Netherlands. Design the Generation R Study is a multi-ethnic population-based prospective cohort study. Setting seven midwife practices participating in the Generation R Study conducted in the city of Rotterdam. Participants in total 2093 pregnant women with a Dutch, Moroccan, Turkish, Cape Verdean, Antillean, Surinamese-Creole and Surinamese-Hindustani background were included in this study. Measurements to assess adequate antenatal care use, we constructed an index, including two indicators; gestational age at first visit and total number of antenatal care visits. Logistic regression analysis was used to assess differences in adequate antenatal care use between different ethnic groups and a Dutch reference group, taking into account differences in maternal age, gravidity and parity. Findings overall, the percentages of women making adequate use are higher in nulliparae than in multiparae, except in Dutch women where no differences are present. Except for the Surinamese-Hindustani, all women from ethnic minority groups make less adequate use as compared to the native Dutch women, especially because of late entry in antenatal care. When taking into account potential explanatory factors such as maternal age, gravidity and parity, differences remain significant, except for Cape-Verdian women. Dutch-Antillean, Moroccan and Surinamese-Creole women exhibit most inadequate use of antenatal care. Key conclusions this study shows that there are ethnic differences in the frequency of adequate use of antenatal care, which cannot be attributed to differences in maternal age, gravidity and parity. Future research is necessary to investigate whether these differences can be explained by socio-economic and cultural factors. Implications for practise clinicians should inform primiparous women, and especially those from ethnic minority groups, on the importance of timely antenatal care entry.

Stroke literacy in high-risk populations

African Americans and Hispanic Americans may not get optimal care for stroke even though they have a greater stroke risk.1 Some reports have found that minority groups in the United States are less likely to receive thrombolytic therapy (recombinant tissue plasminogen activator [rt-PA]) for their strokes than whites.2 The single largest exclusionary factor for rt-PA is delayed patient arrival time,3 so it is of considerable importance that African Americans and Hispanic Americans have greater out-of-hospital delays for stroke and are less likely to be aware of rt-PA as a potential treatment for their strokes than whites.4,5 Clearly, there is a need to improve stroke prevention and access to acute stroke therapy for high-risk minorities. In this issue of Neurology ®, Willey et al.6 explore stroke literacy, defined as knowledge of stroke risk factors and symptoms, in a multiethnic urban population in Central Harlem. This study demonstrated that Hispanic Americans in this community were less likely to identify several key stroke symptoms compared with whites. Notably, only 15% of Hispanic Americans and 25% of African Americans could identify all 5 …

Clinical Risk Stratification in the Emergency Department Predicts Long-Term Cardiovascular Outcomes in a Population-Based Cohort Presenting With Acute Chest Pain

The long-term cardiovascular outcomes of a population-based cohort presenting to the emergency department (ED) with chest pain and classified with a clinical risk stratification algorithm are not well documented. The Olmsted County Chest Pain Study is a community-based study that included all consecutive patients presenting with chest pain consistent with unstable angina presenting to all EDs in Olmsted County, Minnesota. Patients were classified according to the Agency for Health Care Policy and Research (AHCPR) criteria. Patients with ST elevation myocardial infarction and chest pain of noncardiac origin were excluded. Main outcome measures were major adverse cardiovascular and cerebrovascular events (MACCE) at 30 days and at a median follow-up of 7.3 years, and mortality through a median of 16.6 years.The 2271 patients were classified as follows: 436 (19.2%) as high risk, 1557 (68.6%) as intermediate risk, and 278 (12.2%) as low risk. Thirty-day MACCE occurred in 11.5% in the high-risk group, 6.2% in the intermediate-risk group, and 2.5% in the low-risk group (p < 0.001). At 7.3 years, significantly more MACCE were recorded in the intermediate-risk (hazard ratio [HR], 1.91; 95% confidence intervals [CI], 1.33-2.75) and high-risk groups (HR, 2.45; 95% CI, 1.67-3.58). Intermediate- and high-risk patients demonstrated a 1.38-fold (95% CI, 0.95-2.01; p = 0.09) and a 1.68-fold (95% CI, 1.13-2.50; p = 0.011) higher mortality, respectively, compared to low-risk patients at 16.6 years. At 7.3 and at 16.6 years of follow-up, biomarkers were not incrementally predictive of cardiovascular risk.In conclusion, a widely applicable rapid clinical algorithm using AHCPR criteria can reliably predict long-term mortality and cardiovascular outcomes. This algorithm, when applied in the ED, affords an excellent opportunity to identify patients who might benefit from a more aggressive cardiovascular risk factor management strategy.

Neighborhood Retail Food Environment and Fruit and Vegetable Intake in a Multiethnic Urban Population

To examine relationships between the neighborhood food environment and fruit and vegetable intake in a multiethnic urban population. Analysis of cross-sectional survey and observational data. One hundred forty-six neighborhoods within three large geographic communities of Detroit, Michigan. Probability sample of 919 African-American, Latino, and white adults. The dependent variable was mean daily fruit and vegetable servings, as measured by using a modified Block 98 food frequency questionnaire. Independent variables included the neighborhood food environment: store availability (i.e., large grocery, specialty, convenience, liquor, small grocery), supermarket proximity (i.e., street-network distance to nearest chain grocer), and perceived and observed neighborhood fresh fruit and vegetable supply (i.e., availability, variety, quality, affordability). Weighted, multilevel regression. Presence of a large grocery store in the neighborhood was associated with, on average, 0.69 more daily fruit and vegetable servings in the full sample. Relationships between the food environment and fruit and vegetable intake did not differ between whites and African-Americans. However, Latinos, compared with African-Americans, who had a large grocery store in the neighborhood consumed 2.20 more daily servings of fruits and vegetables. Presence of a convenience store in the neighborhood was associated with 1.84 fewer daily fruit and vegetable servings among Latinos than among African-Americans. The neighborhood food environment influences fruit and vegetable intake, and the size of this relationship may vary for different racial/ethnic subpopulations.

Terrorism-Related Fear and Avoidance Behavior in a Multiethnic Urban Population

We sought to determine whether groups traditionally most vulnerable to disasters would be more likely than would be others to perceive population-level risk as high (as measured by the estimated color-coded alert level) would worry more about terrorism, and would avoid activities because of terrorism concerns. We conducted a random digit dial survey of the Los Angeles County population October 2004 through January 2005 in 6 languages. We asked respondents what color alert level the country was under, how often they worry about terrorist attacks, and how often they avoid activities because of terrorism. Multivariate regression modeled correlates of worry and avoidance, including mental illness, disability, demographic factors, and estimated color-coded alert level. Persons who are mentally ill, those who are disabled, African Americans, Latinos, Chinese Americans, Korean Americans, and non-US citizens were more likely to perceive population-level risk as high, as measured by the estimated color-coded alert level. These groups also reported more worry and avoidance behaviors because of concerns about terrorism. Vulnerable populations experience a disproportionate burden of the psychosocial impact of terrorism threats and our national response. Further studies should investigate the specific behaviors affected and further elucidate disparities in the disaster burden associated with terrorism and terrorism policies.

Stroke Location and Association With Fatal Cardiac Outcomes

Cardiac mortality after stroke is common, and small studies have suggested an association of short-term cardiac mortality with insular location of cerebral infarction. Few population-based studies with long-term follow-up have evaluated the effect of stroke location on the long-term risk of cardiac death or myocardial infarction (MI) after first ischemic stroke. We sought to determine the association between stroke location and cardiac death or MI in a multiethnic community-based cohort. The Northern Manhattan Study is a population-based study designed to determine stroke incidence, risk factors, and prognosis in a multiethnic urban population. First ischemic stroke patients age 40 or older were prospectively followed up for cardiac death defined as fatal MI, fatal congestive heart failure, or sudden death/arrhythmia and for nonfatal MI. Primary brain anatomic site was determined by consensus of research neurologists. Hazard ratios (HRs) and 95% CIs were calculated by Cox proportional-hazards models and adjusted for vascular risk factors (age, sex, history of coronary disease, hypertension, diabetes, cholesterol, and smoking), stroke severity, infarct size, and stroke etiology. The study population consisted of 655 patients whose mean age was 69.7+/-12.7 years; 44.6% were men and 51.3% were Hispanic. During a median follow-up of 4.0 years, 44 patients (6.7%) had fatal cardiac events. Of these, fatal MI occurred in 38.6%, fatal congestive heart failure in 18.2%, and sudden death in 43.2%. In multivariate models, clinical diagnosis of left parietal lobe infarction was associated with cardiac death (adjusted HR=4.45; 95% CI, 1.83 to 10.83) and cardiac death or MI (adjusted HR=3.30; 95% CI, 1.45 to 7.51). When analysis of anatomic location was restricted to neuroimaging (computed tomography, magnetic resonance imaging, or both [n=447]), left parietal lobe infarction was associated with cardiac death (adjusted HR=3.37; 95% CI, 1.26 to 8.97), and both left (adjusted HR=3.49; 95% CI, 1.38 to 8.80) and right (adjusted HR=3.13; 95% CI, 1.04 to 9.45) parietal lobe infarctions were associated with cardiac death or MI. We did not find an association between frontal, temporal, or insular stroke and fatal cardiac events, although the number of purely insular strokes was small. Parietal lobe infarction is an independent predictor of long-term cardiac death or MI in this population. Further studies are needed to confirm whether parietal lobe infarction is an independent predictor of cardiac events and death. Surveillance for cardiac disease and implementation of cardioprotective therapies may reduce cardiac mortality in patients with parietal stroke.

Determinants of folic acid use in early pregnancy in a multi-ethnic urban population in The Netherlands: The Generation R study

Objective Recommendations on folic acid use to prevent neural tube defects have been launched in several countries. Adequate folic acid use seems to be low. This study assesses the prevalence of folic acid use and identifies its determinants. Methods The study was embedded in the Generation R Study Rotterdam, the Netherlands, a population-based prospective cohort study between 2002 and 2006. Complete information of 6940 women was available. Information on folic acid use and potential determinants was obtained by questionnaires and physical examination . Results Of all women 37% adequately used folic acid during the preconception period. Most important risk factors for inadequate use were unplanned pregnancy (OR 9.5, CI 7.2–12.4, p < 0.001), low educational level (OR 2.5, CI 1.8–3.6, p < 0.001) and non-western ethnicity, (OR 3.5, CI 2.9–4.3, p < 0.001). After stratification for ethnicity, unplanned pregnancy remained the most important risk factor for inadequate use. Other risk factors for inadequate use were younger age, single marital status, smoking, multiparity (all p < 0.001) and alcohol use ( p < 0.05). In contrast, previous spontaneous abortion decreased the risk of inadequate folic acid use ( p < 0.001). Conclusion Adequate preconception folic acid supplementation is still too low. Implementation of preconception programs and other public health strategies are strongly needed.

Letters to the Editor

I read with great interest a paper recently published by Chen and colleagues ( 1 Chen C.Y. Hasselgren G. Serman N. Elkind M.S. Desvarieux M. Engebretson S.P. Prevalence and quality of endodontic treatment in the northern Manhattan elderly. J Endod. 2007; 33: 230-234 Abstract Full Text Full Text PDF PubMed Scopus (41) Google Scholar ). I have several concerns about this article that I believe questions their conclusions. 1The authors state that “There is growing disparity in access to health care including dental care in the United States.” However, the term “access to health care” is never defined in the article, and a single 17-year-old article is referenced to support the statement. It is not at all clear how one citation from nearly 20 years ago can support a conclusion of “growing” disparity. 2Participants were evaluated without regard to their socioeconomic status. Yet, there was no demonstration of a problem with access to care. No effort seems to have been made to determine what options are available in this area for patients who have issues of disparity (eg, limited financial resources, mobility issues, etc). 3The study consisted solely of examining panoramic radiographs to identify periradicular radiolucencies. The study found, among other things, that 37.5% of root filled treated teeth had periradicular radiolucencies, but panographic radiographs are of questionable value for determining the presence of these lesions. In addition, the interpretation does not consider the possibility that many of these lesions may have been progressively healing following endodontic treatment. 4Among the conclusions presented in the Discussion section is the following: “Our findings suggest a substantial need for improvement in the quality and availability of endodontic treatment in the Northern Manhattan elderly.” It is surprising that the authors can make a conclusion about the availability of endodontic treatment based solely on an examination of radiographs. The authors do not indicate the current level of such availability or what methodology was used to determine the level of availability. It is unclear how the authors know that there is a shortage of such care, free or paid. Finally, if there is a problem at all, there is no indication how it is determined to be one of access rather than one of utilization. Prevalence and Quality of Endodontic Treatment in the Northern Manhattan ElderlyJournal of EndodonticsVol. 33Issue 3PreviewPulpitis results in significant morbidity among the elderly, particularly in underserved communities. We collected panoramic oral radiographs from 244 (mean age 67) participants of the Northern Manhattan Study, a prospective cohort study of stroke risk in a multiethnic urban population. Radiographs were evaluated for missing teeth, caries, restorations, periodontal bone loss, adequacy of endodontic treatment, and periapical radiolucencies. In the study 206 subjects were dentate (mean 17.1 teeth). Full-Text PDF ReplyJournal of EndodonticsVol. 33Issue 8PreviewWe thank Dr. Wahl for his letter regarding our recently published article (1). Although concern was raised about the lack of documentation of disparities in access to health care in the United States, it is our view that the issue is in the public domain and therefore does not require more extensive referencing. The reference we chose to show was by Chester Douglass and colleagues. Although any number of articles could have been referenced, this particular citation is all the more poingnant since it is 17 years old. Full-Text PDF

Prevalence and Quality of Endodontic Treatment in the Northern Manhattan Elderly

Pulpitis results in significant morbidity among the elderly, particularly in underserved communities. We collected panoramic oral radiographs from 244 (mean age 67) participants of the Northern Manhattan Study, a prospective cohort study of stroke risk in a multiethnic urban population. Radiographs were evaluated for missing teeth, caries, restorations, periodontal bone loss, adequacy of endodontic treatment, and periapical radiolucencies. In the study 206 subjects were dentate (mean 17.1 teeth). 5.1% of teeth had periapical radiolucencies, and 4.8% had been endodontically treated; 37.5% of endodontically treated teeth had periapical radiolucencies. Teeth with restorations, periodontal bone loss, pulpotomy, and inadequate root canal filling had a significantly higher occurrence of periapical radiolucency (p < 0.05). Among all root filled teeth, only 26% were deemed satisfactory. We conclude that apical periodontitis is widely prevalent and the technical standard of root fillings is poor in this cohort. There is a substantial need for improved dental care among the northern Manhattan elderly.

Cardiovascular disease and Alzheimer's disease: common links

Growing evidence supports a strong and likely causal association between cardiovascular disease (CVD), and its risk factors, with incidence of cognitive decline and Alzheimer's disease. Individuals with subclinical CVD are at higher risk for dementia and Alzheimer's. Several cardiovascular risk factors are also risk factors for dementia, including hypertension, high LDL cholesterol, low HDL cholesterol and especially diabetes. Moderate alcohol appears to be protective for both CVD and dementia. In contrast, inflammatory markers predict cardiovascular risk, but not dementia, despite biological plausibility for such a link. The substantial overlap in risk factors points to new avenues for research and prevention.

Acculturation and physical activity in a working class multiethnic population

Background. Determinants of physical activity in minority populations remain under-explored. Acculturation is one proposed mechanism for the disparities that exist between racial and ethnic groups in health outcomes. Methods. This cross-sectional study evaluated the relation of language acculturation and generation in the US since migration with leisure-time and occupational activity. A low-income, multiethnic urban population was recruited from Massachusetts small businesses (SB) ( n = 1725) and health centers (HC) ( n = 2205). Baseline data were collected between May 2000 and February 2002. Results. Individuals with low acculturation reported leisure-time activity 3–5 MET hours/week lower than those who were highly acculturated ( P < 0.05). Generation predicted leisure-time activity only in SB participants. In the HC, least acculturated participants reported occupational activity 10–12 MET hours/week higher than highly acculturated participants. In SB men, acculturation was inversely associated with occupational activity; in SB women, language acculturation was positively associated with occupational activity. Generation was not predictive of occupational activity. Conclusion. Language acculturation and generation were positively associated with leisure-time activity. Language acculturation is also associated with occupational activity. Acculturation is important to consider when designing public health interventions.

Impact of a genetic variant in CYP3A4 on risk and clinical presentation of prostate cancer among white and African-American men ☆

Genes involved in androgen metabolism are strong candidates for having an important role in the pathogenesis of prostate cancer. CYP3A4, a protein in the cytochrome P-450 supergene family, facilitates the oxidative deactivation of testosterone. In previous studies, patients with the G variant of a genetic polymorphism in CYP3A4 had prostate cancers with clinically aggressive characteristics at diagnosis. The association was strongest among elderly men. We investigated whether the CYP3A4 variant was linked with the diagnosis or clinical presentation of prostate cancer in a case control study of a multiethnic urban population. Biologic specimens were genotyped for CYP3A4, and analyzed for the impact of this genotype on risk and tumor characteristics at presentation, controlling for the effect of several cofactors. The CYP3A4 variant was more common among African-Americans than among white men. Race-stratified analyses revealed little association between the CYP3A4 variant and prostate cancer risk among white men but were limited by the small number of white men with the CYP3A4 variant. Of African-American men, while the variant G allele was not associated with prostate cancer that had less aggressive characteristics, it was associated with risk of aggressive prostate cancer when men with the AG genotype (odds ratio = 9.3, 95% confidence interval 1.3−411) or GG genotype (odds ratio = 11.9 95% confidence interval 1.6−533) were compared with those with the AA genotype. The association between the CYP3A4 genotype and aggressive prostate cancer in African-American men is consistent with findings of other studies.

What health domains and items are important to patients with knee osteoarthritis? A focus group study in a multiethnic urban Asian population

To determine important health-related quality of life (HRQoL) domains and items within each domain affected by knee osteoarthritis (OA), identify ethnic variations in the importance of these domains and items among three ethnic groups, and determine how identified domains and items mapped onto selected OA-specific HRQoL instruments. Focus groups were conducted among subjects with knee OA stratified by gender, ethnicity, and language spoken. All focus groups were audio-taped and transcribed verbatim, with subsequent translation into English for groups conducted in other languages. Data analysis was performed by combining the key elements of grounded theory and content analysis with the assistance of the qualitative software ATLAS/ti 5.0. Five domains (pain, physical disability, other symptoms of OA, mental health, and social health) were identified from the 74 items reported as important by at least one subject. These domains were important for subjects from all ethnic groups with the exception of social health, which was more often important for Malay subjects. Items more commonly reported as important in the pain, physical disability, and other symptoms of OA domains were generally similar across ethnic groups. In contrast, important items in the mental and social health domains differed among ethnic groups. The impact of knee OA on HRQoL is broadly similar in both Asian and Western socio-cultural contexts. Both similarities and differences in important domains and items were identified among subjects with knee OA from three major Asian ethnic groups.

Relative elevation in baseline leukocyte count predicts first cerebral infarction

Atherosclerosis is an inflammatory disease, and leukocyte levels are associated with future risk of ischemic cardiac disease. To investigate the hypothesis that relative elevations in leukocyte count in a stroke-free population predict future ischemic stroke (IS). A population-based prospective cohort study was performed in a multiethnic urban population. Stroke-free community participants were identified by random-digit dialing. Leukocyte levels were measured at enrollment, and participants were followed annually for IS, myocardial infarction (MI), and cause-specific mortality. Cox proportional hazards regression models were used to calculate hazard ratios (HRs) and 95% CIs for IS, MI, and vascular death after adjustment for medical, behavioral, and socioeconomic factors. Among 3,103 stroke-free community participants (mean age 69.2 +/- 10.3 years) with baseline leukocyte levels measured, median follow-up was 5.2 years. After adjusting for stroke risk factors, each SD in leukocyte count (1.8 x 10(9) cells/L) was associated with an increased risk of IS (HR 1.22, 95% CI 1.05 to 1.42), and IS, MI, or vascular death (HR 1.13, 95% CI 1.02 to 1.26). Compared with those in the lowest quartile of leukocyte count, those in the highest had an increased risk of IS (adjusted HR 1.75, 95% CI 1.08 to 2.82). The effect on atherosclerotic and cardioembolic stroke was greater than in other stroke subtypes. Relative elevations in leukocyte count are independently associated with an increased risk of future ischemic stroke and other cardiovascular events.

Are There Inequalities in the Provision of Stroke Care?

There is evidence of unequal access to health care interventions even where universal health systems operate. We investigated associations between patients' sociodemographic characteristics and the provision of acute and longer-term stroke care in a multiethnic urban population. We used data from 1635 patients with first-ever stroke, collected by a population-based stroke register from 1995 to 2000. Using multivariable analyses, controlled for sociodemographic and clinical factors, we investigated access to 22 evidence-based components of care. 1392 patients (85.1%) were admitted to hospital; of these, 354 (25.4%) were admitted or transferred to a stroke unit. Of those with clinical need, 607 (70.7%) received physical therapies; 477 (59.8%) received speech and language therapy. Older age was associated with lower odds of hospitalization (odds ratio [OR], 0.50; 95% CI, 0.32 to 0.77, P=0.02) and diagnostic brain imaging (OR, 0.15; 95% CI, 0.08 to 0.30, P<0.01) but higher odds of receiving physical therapy (OR, 4.24; 95% CI, 1.22 to 14.73, P<0.01). Black ethnicity was associated with higher odds of stroke unit admission (OR, 1.59; 95% CI, 1.01 to 2.49, P<0.04). There was a weak association between socioeconomic status and admission to hospital and stroke unit. Gender was associated only with treatment of hypertension before stroke. Provision of individual components of care over 1 year varied for specific sociodemographic categories, but there was no consistent pattern of inequality. Clinical decision-making processes are likely to influence these patterns. Further information about clinician and patient roles in decision making is required.

Presentation and course of Type 2 diabetes in youth in a large multi-ethnic city.

To review the clinical experience of children and teens diagnosed with Type 2 diabetes (T2DM) at a paediatric hospital serving a large urban multi-ethnic population. Retrospective chart review of patients with T2DM followed in the diabetes clinic at the Hospital for Sick Children (HSC) over an 8-year period. Patients who were included were younger than 18, referred at the onset of diabetes, and where presentation and/or clinical course was 'typical' of T2DM. Of 1020 children with diabetes followed at HSC, 4% were identified as having T2DM in 2002. There was a sixfold increase in new cases from 1994 to 2002. The mean age at diagnosis was 13.5 +/- 2.2 years (range 8.8-17.5) with a female-to-male ratio of 1.7. Most had a first- or second-degree relative with T2DM. There was an overrepresentation of children with T2DM from Asian and African Canadian ethnic groups relative to the regional population. The majority of teens were asymptomatic at presentation, with a smaller number in diabetic ketoacidosis (DKA) at diagnosis. Mean HbA1c at diagnosis was 10 +/- 3.4%. Approximately one half of patients were initially treated by diet and exercise with many requiring intensification of therapy over a short period of time. We report a similar increase in T2DM incidence and clinical presentation at HSC to other clinic reports in large North American urban centres. Of note is the high prevalence of children of South/South-East Asian descent.

Physical inactivity and overweight among Los Angeles County adults

Objectives The present study examines sociodemographic, health status, health behavioral, and health-related self-perception correlates of physical inactivity in a large, multiethnic urban population. Methods A random-digit-dialed telephone survey of a representative sample of 8353 Los Angeles County adults aged ≥18 years was conducted between September 17, 1999 and December 31, 2000. Data were analyzed to assess the prevalence and identify independent correlates of physical inactivity, defined as <10 minutes of continuous physical activity weekly (“sedentary”). Results Overall, the prevalence of sedentary adults was 41%. Lower educational attainment, female gender, advancing age, non–U.S. birthplace, poorer self-perceived health status, self-perceived depression, smoking, leisure-time television watching/computer use, and receiving a diabetes diagnosis were significantly related to sedentariness in both bivariate and multivariate analyses. Conclusions Mental and physical health status were prominent correlates of sedentariness. Lower socioeconomic class was also associated with sedentary behavior. Further research is needed to understand the relationship between self-perceived overweight and sedentary behavior.

Providing free smoke alarms did not reduce fire related injuries in a deprived multiethnic urban population

DiGuiseppi C, Roberts I, Wade A, et al. Incidence of fires and related injuries after giving out free smoke alarms: cluster randomised controlled trial. BMJ2002 ; 325 : 995 –7...

Quality of life in an urban Asian population: the impact of ethnicity and socio-economic status

The relationships between ethnicity, socio-economic status (SES) and health-related quality of life (HRQoL) have not been well characterised in most Asian populations. We therefore studied the influence of ethnicity and SES on HRQoL in a multi-ethnic urban Asian population, adjusting for the influence of other known determinants of HRQoL. In a disproportionately stratified, cross-sectional, population-based survey, Chinese, Malay and Indian subjects in Singapore completed the Short Form 36 Health Survey (SF-36) HRQoL measure and were assessed to determine demographic, socio-economic, psychosocial and other characteristics. Multiple linear regression models were used to study the influence of ethnicity and SES on SF-36 scores while adjusting for the influence of other determinants of HRQoL. The survey participation rate was 92.8%. Ethnic differences in HRQoL were present for all 8 SF-36 scales ( p<0.001 for all scales except General Health) among the 4122 Chinese, Malays and Indians surveyed. These ethnic groups also differed in several known determinants of HRQoL (e.g., Chinese had more years of education and Indians had more chronic medical conditions). After adjusting for the influence of these factors, ethnicity and SES independently influenced HRQoL, with mean differences in SF-36 scores due to ethnicity ranging from 1.4 to 13.1 points. Educational level and housing type (markers of SES) were also associated with SF-36 scores (0.5–0.6 point increase per year of education and 3.5–4.0 point increase with better housing type, respectively). Better HRQoL was also associated with better family support, and poorer HRQoL with acute and chronic medical conditions and sick days. The study concludes that ethnicity and SES are associated with clinically important differences in HRQoL in a multi-ethnic, urban Asian population.