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STUDY QUESTION: What are the clinical pregnancy and live birth rates in women who underwent up to two more euploid blastocyst transfers after three failures in the absence of another known factor that affects implantation? SUMMARY ANSWER: The fourth and fifth euploid blastocyst transfers resulted in similar live birth rates of 40% and 53.3%, respectively, culminating in a cumulative live birth rate of 98.1% (95% CI = 96.5-99.6%) after five euploid blastocyst transfers. WHAT IS KNOWN ALREADY: The first three euploid blastocysts have similar implantation and live birth rates and provide a cumulative live birth rate of 92.6%. STUDY DESIGN, SIZE, DURATION: An international multi-center retrospective study was conducted at 25 individual clinics. The study period spanned between January 2012 and December 2022. A total of 123 987 patients with a total of 64 572 euploid blastocyst transfers were screened for inclusion. PARTICIPANTS/MATERIALS, SETTING, METHODS: Patients with a history of any embryo transfer at another clinic, history of any unscreened embryo transfer at participating clinics, parental karyotype abnormalities, the use of donor oocytes or a gestational carrier, untreated intracavitary uterine pathology (e.g. polyp, leiomyoma), congenital uterine anomalies, adenomyosis, communicating hydrosalpinx, endometrial thickness <6 mm prior to initiating of progesterone, use of testicular sperm due to non-obstructive azoospermia in the male partner, transfer of an embryo with a reported intermediate chromosome copy number (i.e. mosaic), preimplantation genetic testing cycles for monogenic disorders, or structural chromosome rearrangements were excluded. Ovarian stimulation protocols and embryology laboratory procedures including trophectoderm biopsy followed the usual practice of each center. The ploidy status of blastocysts was determined with comprehensive chromosome screening. Endometrial preparation protocols followed the usual practice of participating centers and included programmed cycles, natural or modified natural cycles. MAIN RESULTS AND THE ROLE OF CHANCE: A total of 105 (0.085% of the total population) patients met the criteria and underwent at least one additional euploid blastocyst transfer after failing to achieve a positive pregnancy test with three consecutive euploid blastocyst transfers. Outcomes of the fourth and fifth euploid blastocyst transfers were similar across participating centers. Overall, the live birth rate was similar with the fourth and fifth euploid blastocysts (40% vs 53.3%, relative risk = 1.33, 95% CI = 0.93-1.9, P value = 0.14). Sensitivity analyses excluding blastocysts biopsied on Day 7 postfertilization, women with a BMI >30 kg/m2, cycles using non-ejaculate or donor sperm, double-embryo transfer cycles, and cycles in which the day of embryo transfer was modified due to endometrial receptivity assay test result yielded similar results. Where data were available, the fourth euploid blastocyst had similar live birth rate with the first one (relative risk = 0.84, 95% CI = 0.58-1.21, P = 0.29). The cumulative live birth rate after five euploid blastocyst transfers was 98.1% (95% CI = 96.5-99.6%). LIMITATIONS, REASONS FOR CAUTION: Retrospective design has its own inherent limitations. Patients continuing with a further euploid embryo transfer and patients dropping out from treatment after three failed euploid transfers can be systematically different, perhaps with regard to ovarian reserve or economic status. WIDER IMPLICATION OF THE FINDINGS: Implantation failure seems to be mainly due to embryonic factors. Given the stable and high live birth rates up to five euploid blastocysts, unexplained recurrent implantation failure should have a prevalence of <2%. Proceeding with another embryo transfer can be the best next step once a known etiology for implantation failure is ruled out. STUDY FUNDING/COMPETING INTEREST(S): None. TRIAL REGISTRATION NUMBER: N/A.
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Implantação do Embrião , Transferência Embrionária , Taxa de Gravidez , Humanos , Feminino , Gravidez , Estudos Retrospectivos , Transferência Embrionária/métodos , Transferência Embrionária/estatística & dados numéricos , Adulto , Prevalência , Coeficiente de Natalidade , Nascido Vivo , Falha de Tratamento , Blastocisto , Fertilização in vitro/métodos , Fertilização in vitro/estatística & dados numéricos , Resultado da Gravidez/epidemiologiaRESUMO
PURPOSE: Investigate patient preferences in embryo selection for transfer regarding quality versus sex in IVF/ICSI cycles with PGT-A and assess associated clinical implications. METHODS: Retrospective cohort study at a university fertility practice from January 2012 to December 2021. Included were patients undergoing single frozen euploid transfers with at least one embryo of each sex available. Primary outcomes were preference for embryo selection (quality vs. sex) and sex preference (male vs. female). Trends over 10 years were evaluated and clinical outcomes, including clinical pregnancy rate (CPR), sustained implantation rate (SIR), and live birth rate (LBR), were compared. RESULTS: A total of 5,145 embryo transfer cycles were included; 54.5% chose the best-quality embryo, while 45.5% selected based on sex. Among those choosing based on sex, 56.5% chose male embryos and 43.5% chose female. Preference for quality remained consistent over the decade (p = 0.30), while male embryos were consistently favored (p = 0.64). Best-quality embryos had higher grades (p < 0.001). Clinical outcomes were similar between groups (CPR: 74.4% vs. 71.9%, p = 0.05; SIR: 64.9% vs. 63.4%, p = 0.26; LBR: 58.8% vs. 56.7%, p = 0.13), and between male and female embryo selections. CONCLUSIONS: Sex selection remains common, with 45.5% selecting embryos based on sex, predominantly favoring males. This trend persisted over 10 years, with comparable clinical outcomes regardless of selection criteria.
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PURPOSE: To investigate whether leukocytospermia (defined as the presence of ≥ 1 × 106 white blood cells/mL) affects clinical and embryologic outcomes in in vitro fertilization (IVF) cycles with intracytoplasmic sperm injection (ICSI) and preimplantation genetic testing for aneuploidy (PGT-A). METHODS: This was a retrospective cohort study including 5425 cycles between January 2012 to December 2021 at a single large university-affiliated fertility clinic. The primary outcome was live birth rate (LBR). RESULTS: The prevalence of leukocytospermia was 33.9% (n = 1843). Baseline characteristics including female age, BMI, AMH, Day 3 FSH, and male partner's age were similar in cycles with and without leukocytospermia. The LBR after the first euploid embryo transfer was similar in those with and without leukocytospermia (62.3% vs. 63% p = 0.625). Secondary outcomes including clinical pregnancy rate (CPR), sustained implantation rate (SIR), fertilization (2PN) rate, blastulation rate, and aneuploidy rate were also evaluated. The CPR (73.3% vs 74.9%, p = 0.213) and SIR (64.6% vs. 66%, p = 0.305) were similar in both groups. The 2PN rate was also similar in both groups (85.7% vs. 85.8%, p = 0.791), as was the blastulation rate per 2PN (56.7% vs. 57.5%, p = 0.116). The aneuploidy rate was not significantly different between groups (25.7% vs 24.4%, p = 0.053). A generalized estimation equation with logistic regression demonstrated that the presence leukocytospermia did not influence the LBR (adjusted OR 0.878; 95% CI, 0.680-1.138). CONCLUSION: Leukocytospermia diagnosed just prior to an IVF cycle with PGT-A does not negatively impact clinical or embryologic outcomes.
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Aneuploidia , Transferência Embrionária , Fertilização in vitro , Testes Genéticos , Taxa de Gravidez , Diagnóstico Pré-Implantação , Injeções de Esperma Intracitoplásmicas , Humanos , Feminino , Injeções de Esperma Intracitoplásmicas/métodos , Gravidez , Masculino , Adulto , Transferência Embrionária/métodos , Estudos Retrospectivos , Nascido Vivo/epidemiologia , Nascido Vivo/genética , Coeficiente de Natalidade , Leucócitos/patologia , Infertilidade Masculina/genética , Infertilidade Masculina/patologia , Infertilidade Masculina/terapia , Infertilidade Masculina/diagnóstico , Implantação do Embrião/genéticaRESUMO
RESEARCH QUESTION: Does a decrease in endometrial thickness (compaction ≥10%) before embryo transfer prognosticate the risk for preterm birth and placenta-mediated pregnancy complications among IVF pregnancies? DESIGN: Retrospective cohort study at a large private fertility practice. Patients with a singleton live birth after a fresh or frozen embryo transfer between 2016 and 2019 were included. The primary outcome was preterm birth (delivery before 37 weeks gestational age). Secondary outcomes included gestational hypertension, pre-eclampsia, intrauterine growth restriction and placental abruption. RESULTS: Of the 252 patients that met the study criteria, 122 (48%) demonstrated endometrial compaction (≥10%) and 130 (52%) did not. Age, body mass index (BMI), parity, history of preterm birth or history of pre-existing maternal conditions between the compaction and no-compaction groups were not significantly different. The overall prevalence of placenta-mediated complications across all participants was 25% (nâ¯=â¯62). The number of preterm births between the compaction and no-compaction groups (13% and 6%, respectively, Pâ¯=â¯0.09) as well as the prevalence of placenta-mediated complications (29.5% and 20%, respectively, Pâ¯=â¯0.08) were not significantly different. Findings for the primary outcome (preterm birth) persisted even after adjustment for potential confounding variables, including maternal age, parity, BMI, embryo score and type of embryo transfer (fresh versus frozen) (adjusted OR 1.86, 95% CI 0.64 to 5.38). CONCLUSIONS: Endometrial compaction (or decrease in endometrial thickness) before embryo transfer is not associated with preterm birth or placenta-mediated pregnancy complications.
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Complicações na Gravidez , Nascimento Prematuro , Gravidez , Humanos , Recém-Nascido , Feminino , Nascimento Prematuro/etiologia , Placenta , Fertilização in vitro/efeitos adversos , Estudos Retrospectivos , Transferência Embrionária/efeitos adversos , Complicações na Gravidez/epidemiologiaRESUMO
STUDY OBJECTIVE: The primary objective was to introduce an intraoperative blood conservation bundle (BCB) checklist into clinical practice and assess its impact on perioperative blood transfusion rates during myomectomy. DESIGN: Prospective cohort study with retrospective control group. SETTING: A Canadian tertiary-care teaching hospital. PATIENTS: One hundred and eighty-six women who underwent myomectomy. INTERVENTIONS: The BCB is a physical checklist attached to the patient chart and consists of evidence-based medical and surgical interventions to reduce intraoperative blood loss. It was introduced in October 2018, and data were collected prospectively during a 12-month period for all open, robotic, and laparoscopic myomectomies at our institution. The primary outcome was the perioperative transfusion rate, and the secondary outcomes included estimated intraoperative blood loss, perioperative complications, readmissions, and BCB usage rates. Data were compared with those of a historic control group for a 24-month period before the BCB introduction. MEASUREMENTS AND MAIN RESULTS: In the pre-BCB period, 134 myomectomies (90 open, 31 robotic, and 13 laparoscopic) were performed, and during our study period, 52 myomectomies (33 open, 10 robotic, and 9 laparoscopic) were performed. There was a decrease in transfusion rate from 15.7% (21/134) to 7.7% (4/52) after introduction of the BCB; however, this was not significant (pâ¯=â¯.152). The mean estimated blood loss was lower postintervention (491 mL ± 440 mL vs 350 mL ± 255 mL; p <.05) as was the mean delta hemoglobin (-28 g/L ± 13.0 g/L vs -23 g/L ± 11.4g/L; p <.05]. The checklist was used in 92.3% of cases (48/52). There were no differences in intraoperative or postoperative complications or readmission rates. CONCLUSION: Best practice care bundles can improve knowledge translation of guidelines into care delivery. The introduction of the BCB was successful in reducing intraoperative blood loss during myomectomy at our institution. The BCB is a simple, effective tool that can be easily adopted by gynecologic surgeons to guide intraoperative decision-making during myomectomy.
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Perda Sanguínea Cirúrgica/prevenção & controle , Transfusão de Sangue/estatística & dados numéricos , Lista de Checagem , Leiomioma/cirurgia , Miomectomia Uterina/estatística & dados numéricos , Neoplasias Uterinas/cirurgia , Adulto , Perda Sanguínea Cirúrgica/estatística & dados numéricos , Canadá/epidemiologia , Estudos de Casos e Controles , Feminino , Humanos , Laparoscopia , Leiomioma/sangue , Pessoa de Meia-Idade , Readmissão do Paciente/estatística & dados numéricos , Assistência Perioperatória/estatística & dados numéricos , Complicações Pós-Operatórias/sangue , Complicações Pós-Operatórias/epidemiologia , Estudos Prospectivos , Estudos Retrospectivos , Miomectomia Uterina/efeitos adversos , Miomectomia Uterina/métodos , Neoplasias Uterinas/sangueRESUMO
OBJECTIVE: The authors sought to study whether there is differential access to fertility services for immigrant women in a single-payer system. METHODS: A cross-sectional quantitative survey was administered to 265 patients over 3 months. All participants were female patients in heterosexual relationships at a university-affiliated hospital-based fertility clinic in a large metropolitan city. Data on sociodemographic characteristics, reproductive history, and experience accessing fertility services were collected. Statistical analysis, including chi-square and ANOVA regression, was completed using JMP software. RESULTS: The response rate of the survey was 86.6%. A total of 265 women participated, 124 (47%) immigrants and 141(53%) non-immigrants. Immigrants more commonly left questions unanswered. Long-term immigrants had a significantly longer average duration of infertility than non-immigrant women (47 months vs. 34 months; P = 0.04). There was a trend towards a delay in seeing a health care provider among long-term immigrants. The most commonly reported reasons for delaying fertility care were "not knowing there was a problem" and "treatments being too expensive." Although participants across all groups relied on their primary care provider to supply information on fertility services, a greater percentage (17%) of recent immigrants than non-immigrant participants (7%) used the Internet to obtain information. CONCLUSION: Immigrant women addressed their fertility needs even when they had fewer resources and less social stability than did non-immigrant women. However, they experienced a delay in receiving specialized care for infertility. Immigrant women also appeared less comfortable disclosing personal information in a health care setting.
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Emigrantes e Imigrantes , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Serviços de Saúde Reprodutiva/estatística & dados numéricos , Adulto , Canadá , Informação de Saúde ao Consumidor , Estudos Transversais , Utilização de Instalações e Serviços , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Infertilidade/terapia , Internet , Encaminhamento e Consulta , Fatores Socioeconômicos , Fatores de TempoRESUMO
Immigrant taxi drivers in metropolitan cities are exposed to experiences of discrimination and occupation-based health risks. Given the structural differences in health care systems in the United States and Canada, we investigated the differences in reports of discrimination, health conditions and concern about health conditions between taxi drivers in New York City and Toronto, Ontario. Participants were recruited for a taxi driver Needs Assessment Survey as part of a Taxi Network needs assessment project using a street side convenience sampling technique in New York City and Toronto. The matched sample contained 33 drivers from Toronto and 33 drivers from NYC. All Toronto drivers in our sample reported having health insurance while over a quarter of NYC drivers did not have health insurance. Toronto drivers reported greater everyday and workplace discrimination. Drivers in both cities experienced higher rates than average, and reported concern about, major health conditions. We also found preliminary evidence suggesting a relationship between experiencing discrimination and reporting chronic pain. Our findings suggest the need for future research to more closely examine the associations between discrimination and health among the taxi driver population.
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Condução de Veículo/estatística & dados numéricos , Emigrantes e Imigrantes , Nível de Saúde , Preconceito/estatística & dados numéricos , Adulto , Condução de Veículo/psicologia , Humanos , Cobertura do Seguro/estatística & dados numéricos , Seguro Saúde/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Cidade de Nova Iorque , Ontário , Preconceito/psicologia , Inquéritos e QuestionáriosRESUMO
BACKGROUND: Low- and middle-income countries (LMICs) are developing novel approaches to healthcare that may be relevant to high-income countries (HICs). These include products, services, organizational processes, or policies that improve access, cost, or efficiency of healthcare. However, given the challenge of replication, it is difficult to identify innovations that could be successfully adapted to high-income settings. We present a set of criteria for evaluating the potential impact of LMIC innovations in HIC settings. METHODS: An initial framework was drafted based on a literature review, and revised iteratively by applying it to LMIC examples from the Center for Health Market Innovations (CHMI) program database. The resulting criteria were then reviewed using a modified Delphi process by the Reverse Innovation Working Group, consisting of 31 experts in medicine, engineering, management and political science, as well as representatives from industry and government, all with an expressed interest in reverse innovation. RESULTS: The resulting 8 criteria are divided into two steps with a simple scoring system. First, innovations are assessed according to their success within the LMIC context according to metrics of improving accessibility, cost-effectiveness, scalability, and overall effectiveness. Next, they are scored for their potential for spread to HICs, according to their ability to address an HIC healthcare challenge, compatibility with infrastructure and regulatory requirements, degree of novelty, and degree of current collaboration with HICs. We use examples to illustrate where programs which appear initially promising may be unlikely to succeed in a HIC setting due to feasibility concerns. CONCLUSIONS: This study presents a framework for identifying reverse innovations that may be useful to policymakers and funding agencies interested in identifying novel approaches to addressing cost and access to care in HICs. We solicited expert feedback and consensus on an empirically-derived set of criteria to create a practical tool for funders that can be used directly and tested prospectively using current databases of LMIC programs.
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Comportamento Cooperativo , Atenção à Saúde/métodos , Países Desenvolvidos , Países em Desenvolvimento , Difusão de Inovações , Aprendizagem , Atenção à Saúde/classificação , Atenção à Saúde/economia , Acessibilidade aos Serviços de Saúde/classificação , Acessibilidade aos Serviços de Saúde/normas , Humanos , Internacionalidade , Pesquisa QualitativaRESUMO
OBJECTIVES: We describe the impact of the Step On It! intervention to link taxi drivers, particularly South Asians, to health insurance enrollment and navigate them into care when necessary. METHODS: Step On It! was a worksite initiative held for 5 consecutive days from September 28 to October 2, 2011, at John F. Kennedy International Airport in New York City. Data collected included sociodemographics, employment, health care access and use, height, weight, blood pressure, and random plasma glucose. Participants were given their results, counseled by a medical professional, and invited to participate in free workshops provided by partner organizations. RESULTS: Of the 466 drivers participated, 52% were uninsured, and 49% did not have a primary care provider. Of 384 drivers who had blood pressure, glucose, or both measured, 242 (63%) required urgent or regular follow-up. Of the 77 (32%) requiring urgent follow-up, 50 (65%) sought medical care at least once, of whom 13 (26%) received a new diagnosis. Of the 165 (68%) requiring regular follow-up, 68 (41%) sought medical care at least once, of whom 5 (7%) received a new diagnosis. CONCLUSIONS: This study provides encouraging results about the potential impact of an easy-to-deliver, easily scalable workplace intervention with a large, vulnerable population.
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Educação em Saúde/métodos , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Saúde Ocupacional , Local de Trabalho , Adulto , Glicemia , Pressão Sanguínea , Pesos e Medidas Corporais , Humanos , Cidade de Nova Iorque , Fatores SocioeconômicosRESUMO
There is considerable evidence demonstrating the positive impact of pedometers and walking programs for increasing physical activity and reducing risk for cardiovascular disease among diverse populations. However, no interventions have been targeted towards South Asian taxi drivers, a population that may be at high risk for developing cardiovascular disease. Supporting South Asian Taxi Drivers to Exercise through Pedometers (SSTEP) was a 12-week pilot study among South Asian taxi drivers to increase their daily step counts. SSTEP assessed the feasibility, acceptability, and potential impact of an exercise intervention employing pedometers, a step diary, written materials, and telephone follow-up to initiate or increase physical activity in this at-risk occupational group. Seventy-four drivers were recruited to participate at sites frequented by South Asian taxi drivers. Participant inclusion criteria were: (1) age 18 or over; (2) birthplace in India, Pakistan, or Bangladesh; (3) fluent in English, Hindi, Urdu, Punjabi, or Bengali; and (4) intention to remain in New York City for the 3-month study period. Comprehensive intake and exit questionnaires were administered to participants in their preferred languages. Intake and exit health screenings, including blood pressure, cholesterol, and glucose were completed. Daily step counts were obtained 4 days after recruitment, and at the 4-, 8-, and 12-week mark via phone calls. To measure the impact of the intervention, step counts, blood pressure, cholesterol, and body mass index were compared at intake and exit. Participants in SSTEP were sedentary at baseline. The SSTEP intervention resulted in a small increase in step counts among participants overall, and in a significant increase (>2,000 steps) among a subset ("Bigsteppers"). Drivers with higher baseline glucose values had significantly greater improvements in their step counts. Focused lifestyle interventions for drivers at high risk for cardiovascular disease may be particularly impactful.
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Doenças Cardiovasculares/prevenção & controle , Exercício Físico , Promoção da Saúde/métodos , Adulto , Idoso , Bangladesh/etnologia , Humanos , Índia/etnologia , Masculino , Pessoa de Meia-Idade , Paquistão/etnologia , Projetos Piloto , Comportamento de Redução do Risco , Fatores Socioeconômicos , Inquéritos e Questionários , Meios de Transporte , Estados Unidos/epidemiologia , Caminhada/estatística & dados numéricos , Recursos HumanosRESUMO
Multiple factors associated with taxi driving can increase the risk of cardiovascular disease (CVD) in taxi drivers. This paper describes the results of Step On It!, which assessed CVD risk factors among New York City taxi drivers at John F. Kennedy International Airport. Drivers completed an intake questionnaire and free screenings for blood pressure, glucose and body mass index (BMI). 466 drivers participated. 9 % had random plasma glucose values >200 mg/dl. 77 % had elevated BMIs. Immigrants who lived in the US for >10 years had 2.5 times the odds (CI 1.1-5.9) of having high blood pressure compared to newer immigrants. Abnormalities documented in this study were significant, especially for immigrants with greater duration of residence in the US, and underscore the potential for elevated CVD risk in this vulnerable population, and the need to address this risk through frameworks that utilize multiple levels of intervention.
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Condução de Veículo/estatística & dados numéricos , Doenças Cardiovasculares/etnologia , Emigrantes e Imigrantes/estatística & dados numéricos , Doenças Profissionais/etnologia , Local de Trabalho/estatística & dados numéricos , Adolescente , Adulto , Glicemia , Pressão Sanguínea , Índice de Massa Corporal , Comportamentos Relacionados com a Saúde , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Hipertensão/etnologia , Idioma , Masculino , Pessoa de Meia-Idade , Cidade de Nova Iorque/epidemiologia , Medição de Risco , Fatores de Risco , Inquéritos e Questionários , Adulto JovemRESUMO
South Asian (SA) taxi drivers potentially possess a double epidemiologic risk for cardiovascular disease (CVD) due to their ethnicity and occupation. This study investigates SA taxi drivers' knowledge, attitudes, beliefs about general health, CVD and approaches to reduce CVD risk. Five focus groups were conducted with 31 SA taxi drivers in the participants' primary language (Bengali, Hindi, Urdu or Punjabi). Audio-recordings of the sessions were transcribed, translated and entered into ATLAS.ti 6.2 for coding and analysis. SA drivers in an urban setting perceive themselves to be at high risk for CVD because of high work-related stress, physical inactivity, poor diet and poor health care access. Participants attributed their occupation to increasing risk for heart disease; none believed that being SA increased their risk. Interventions to lower CVD risk among SA taxi drivers should be multi-level and involve the individual drivers and the taxi industry.
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Condução de Veículo , Doenças Cardiovasculares/prevenção & controle , Conhecimentos, Atitudes e Prática em Saúde , Doenças Profissionais/prevenção & controle , Adulto , Bangladesh/etnologia , Doenças Cardiovasculares/etnologia , Grupos Focais , Humanos , Índia/etnologia , Masculino , Cidade de Nova Iorque , Paquistão/etnologia , Adulto JovemRESUMO
INTRODUCTION: South Asians have a high prevalence and early age of onset of diabetes, metabolic syndrome, and cardiovascular disease (CVD). We assess the potential of a culturally responsive intervention, health camps, to identify and inform U.S. South Asian community members at risk for CVD. METHODS: We held four culturally and linguistically tailored health camps between October 2009 and November 2010 to educate participants about and screen for CVD risk factors, including diabetes, hypertension, and hypercholesterolemia. Data analysis was conducted in December 2010. RESULTS: Nearly 300 (289) South Asians registered at the health camps: 20% reported a previous diagnosis of diabetes, 34% elevated blood pressure, and 22% hypercholesterolemia. Most (240) participants had their blood glucose measured; 13% had values >200 mg/dl. Most (265) had their blood pressure measured; 32% had elevated values. Over half (57%) of LDLs were <100 mg/dl. DISCUSSION: Health camps are a potentially important component in addressing increased CVD risk in this vulnerable population.