This research centers on the behavioral tendency of the middle-aged and seniors in bicycle tourism at environmentally protected scenic areas and its relevant influence factors. The theory of planned behavior (TPB) is adopted as the basis of this study. The middle-aged and seniors are the subjects of this research.
View Article and Find Full Text PDFThe purpose of this study was to document predictors of long-term retention among minority participants in the Well Elderly 2 Study, a randomized controlled trial of a lifestyle intervention for community-dwelling older adults. The primary sample included 149 African American and 92 Hispanic men and women aged 60 to 95 years, recruited at senior activity centers and senior residences. Chi-square and logistic regression procedures were undertaken to examine study-based, psychosocial and health-related predictors of retention at 18 months following study entry.
View Article and Find Full Text PDFBackground: Older people are at risk for health decline and loss of independence. Lifestyle interventions offer potential for reducing such negative outcomes. The aim of this study was to determine the effectiveness and cost-effectiveness of a preventive lifestyle-based occupational therapy intervention, administered in a variety of community-based sites, in improving mental and physical well-being and cognitive functioning in ethnically diverse older people.
View Article and Find Full Text PDFInvest Ophthalmol Vis Sci
August 2011
Purpose: To evaluate the ability of various screening tests, both individually and in combination, to detect glaucoma in the general Latino population and high-risk subgroups.
Methods: The Los Angeles Latino Eye Study is a population-based study of eye disease in Latinos 40 years of age and older. Participants (n = 6082) underwent Humphrey visual field testing (HVF), frequency doubling technology (FDT) perimetry, measurement of intraocular pressure (IOP) and central corneal thickness (CCT), and independent assessment of optic nerve vertical cup disc (C/D) ratio.
Purpose: To estimate 4-year incidence and progression of early and advanced age-related macular degeneration (AMD).
Design: Population-based cohort study.
Methods: A comprehensive ophthalmologic examination including stereoscopic fundus photography was performed on adult Latinos at baseline and follow-up.
Purpose: To examine the cross-sectional relationship between blood pressure, perfusion pressure, and prevalence of open angle glaucoma (OAG) in an adult Latino population.
Methods: Participants aged 40 years and older (N = 6130) from the Los Angeles Latino Eye Study (LALES), a large, population-based study of self-identified adult Latinos, underwent an interviewer-administered questionnaire and a complete ocular and clinical examination. Logistic regression was used to evaluate the covariate-adjusted association of OAG with systolic, diastolic, and mean blood pressures and perfusion pressures.
Purpose: To identify the prevalence and determinants of self-reported eye care use in Latinos.
Design: Population-based ocular epidemiologic study in Latinos aged 40+ years living in La Puente, California.
Participants: A total of 5455 participants.
Purpose: To examine the relationship between the prevalence of open-angle glaucoma (OAG) and intraocular pressure (IOP) and the impact of central corneal thickness (CCT) on this relationship.
Design: Population-based cross-sectional study.
Methods: The study cohort consisted of 5,970 participants from the Los Angeles Latino Eye Study (LALES) with no history of glaucoma treatment and with complete ophthalmic examination data.
Purpose: To evaluate the association of biologic factors with intraocular pressure (IOP) in a Latino population.
Design: Population-based cross-sectional study.
Methods: Latinos 40 years and older (n = 5,958) from the Los Angeles Latino Eye Study without a history of ocular hypotensive treatment underwent an interviewer-administered questionnaire and a complete ocular and clinical examination.
Purpose: To determine the age- and sex-specific prevalence and risk indicators of uncorrected refractive error and unmet refractive need among a population-based sample of Latino adults.
Methods: Self-identified Latinos 40 years of age and older (n = 6129) from six census tracts in La Puente, California, underwent a complete ophthalmic examination, and a home-administered questionnaire provided self-reported data on potential risk indicators. Uncorrected refractive error was defined as a >or=2-line improvement with refraction in the better seeing eye.
Purpose: To study the prevalence and associations of asymptomatic retinal emboli in a cohort of Latinos and to compare these findings with those of previous population studies.
Design: Population-based cross-sectional study.
Methods: All participants in this study underwent a comprehensive eye examination, including fundus photography.
Purpose: To evaluate the relationship between sociodemographic, family history, and lifestyle risk factors and open-angle glaucoma (OAG) and ocular hypertension (OHT) in Latinos.
Design: Population-based cohort study.
Participants: Latinos 40 years and older from 6 census tracts in La Puente, California.
Invest Ophthalmol Vis Sci
September 2007
Purpose: To assess the prevalence of retinopathy and its relationship to sociodemographic and clinical characteristics in a population-based cohort of adult Latinos without diabetes mellitus.
Methods: This was a population-based, cross-sectional study comprising 6357 Latinos, 40 years of age and older, from six census tracts in La Puente, Los Angeles, California. An interviewer-administered questionnaire assessed sociodemographic factors and medical history.
Purpose: To compare the measurements of intraocular pressure (IOP) with Goldmann applanation tonometry (GAT) and dynamic contour tonometry (DCT) and the effects of central corneal thickness (CCT), corneal curvature, and level of IOP on these methods.
Design: Cross-sectional population-based study.
Participants: From the Los Angeles Latino Eye Study, 2157 participants of primarily Mexican ancestry.
Objective: To describe the causes of low vision and blindness in a population-based sample of adult Latinos.
Design: Population-based cross-sectional study.
Participants: Six thousand three hundred fifty-seven Latinos 40 years and older from 6 census tracts in Los Angeles, California.
A transition metal carbonyl species, Cr(CO)(4)dpp, has been successfully attached to bare silver nanoparticles prepared by laser ablation of a metal foil in ethanol. Transmission electron microscopy (TEM) images have shown that at least a portion of the silver nanoparticles have been capped by the chromium species, and ligand shells corresponding to Cr(CO)(4)dpp multilayer adsorption onto the silver nanoparticles of 30-50 nm diameter have been observed. The detection of the strongest Raman-active nu(CO) band of Cr(CO)(4)dpp at 2004 cm(-1) revealed that the species has been adsorbed without decomposition.
View Article and Find Full Text PDFInvest Ophthalmol Vis Sci
May 2006
Purpose: To estimate gender- and age-specific prevalence of myopia and identify risk indicators for myopia in a population-based sample of Latino adults aged 40 years and older in La Puente, California.
Methods: Noncycloplegic automated refraction with supplemental standardized subjective refraction was performed for presenting visual acuity worse than 20/20. Potential risk indicators for myopia were evaluated by questionnaire and clinical examination.
Purpose: To characterize age- and gender-related differences in refractive error, ocular biometry, and lens opalescence (NOP) in a population-based sample of adult Latinos. Also assessed were the determinants of age-related refractive differences.
Methods: Participants in the Los Angeles Latino Eye Study (LALES), a population-based study of Latinos aged 40 years and more, underwent an ophthalmic examination, including ultrasonic measurements of axial length (AL), vitreous chamber depth (VCD), anterior chamber depth (ACD), lens thickness (LT), and noncycloplegic automated and subjective refraction.
Background: Among human immunodeficiency virus-infected individuals, facial lipoatrophy has become epidemic. Those affected are stigmatized, leading to psychological distress, social and career impediments, and impaired compliance to human immunodeficiency virus medications. Temporary treatment options are limited by excessive cost, necessity of frequent treatments, and lack of a natural look or feel beneath the skin.
View Article and Find Full Text PDFObjective: To estimate age- and gender-specific prevalences of ocular hypertension and open-angle glaucoma (OAG) in adult Latinos.
Design: Population-based, cross-sectional study.
Participants: Six thousand three hundred fifty-seven Latinos 40 years and older from 6 census tracts in Los Angeles, California.
Objective: To determine the age- and gender-specific prevalence and risk indicators of visual impairment and blindness in urban Latinos 40 years and older.
Design: Population-based cross-sectional study.
Participants: Six thousand three hundred fifty-seven Latinos 40 years and older from 6 census tracts in Los Angeles, California.
Invest Ophthalmol Vis Sci
June 2004
Purpose: To determine age- and gender-specific prevalence and associations of epiretinal membranes (ERMs) in adult Latinos.
Methods: The Los Angeles Latino Eye Study (LALES) is a population-based study of eye disease among Latinos aged 40 or more years. Complete ophthalmic examinations included stereoscopic fundus photography.
Background: Sudden Unexplained Death Syndrome (SUDS) is the leading cause of death in young, healthy, Southeast Asian men. The role of an implantable cardioverter defibrillator (ICD) for mortality reduction in these patients remains unclear.
Methods And Results: The Defibrillator Versus beta-Blockers for Unexplained Death in Thailand (DEBUT) study is a randomized, clinical trial conducted in 2 phases (pilot study followed by the main trial) to compare the annual all-cause mortality rates among SUDS patients treated with beta-blockers versus that among those treated with an ICD.
Purpose: To characterize central corneal thickness (CCT) in Latinos aged 40 or more years.
Methods: A population-based cohort of Latinos from two census tracts in La Puente, California, underwent measurements of CCT and intraocular pressure (IOP). CCT was measured with an ultrasonic pachymeter, and IOP was measured by applanation tonometry.
Purpose: To characterize binocular visual acuity summation and inhibition in participants of a population-based ocular epidemiologic study.
Methods: A complete ophthalmic examination of Latinos, aged 40 or more years, measured binocular and monocular distance visual acuities by a standard early-treatment diabetic retinopathy study (ETDRS) protocol. The proportions of participants who demonstrated binocular summation (i.