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Dive into the research topics where Michael K. Ong is active.

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Featured researches published by Michael K. Ong.


JAMA Internal Medicine | 2016

Effectiveness of remote patient monitoring after discharge of hospitalized patients with heart failure the better effectiveness after transition-heart failure (BEAT-HF) randomized clinical trial

Michael K. Ong; Patrick S. Romano; Sarah Edgington; Harriet Udin Aronow; Andrew D. Auerbach; Jeanne T Black; Teresa De Marco; José J. Escarce; Lorraine S. Evangelista; Barbara Hanna; Theodore G. Ganiats; Barry H. Greenberg; Sheldon Greenfield; Sherrie H. Kaplan; Asher Kimchi; Honghu Liu; Dawn Lombardo; Carol M. Mangione; Bahman Sadeghi; Banafsheh Sadeghi; Majid Sarrafzadeh; Kathleen Tong; Gregg C. Fonarow

IMPORTANCE It remains unclear whether telemonitoring approaches provide benefits for patients with heart failure (HF) after hospitalization. OBJECTIVE To evaluate the effectiveness of a care transition intervention using remote patient monitoring in reducing 180-day all-cause readmissions among a broad population of older adults hospitalized with HF. DESIGN, SETTING, AND PARTICIPANTS We randomized 1437 patients hospitalized for HF between October 12, 2011, and September 30, 2013, to the intervention arm (715 patients) or to the usual care arm (722 patients) of the Better Effectiveness After Transition-Heart Failure (BEAT-HF) study and observed them for 180 days. The dates of our study analysis were March 30, 2014, to October 1, 2015. The setting was 6 academic medical centers in California. Participants were hospitalized individuals 50 years or older who received active treatment for decompensated HF. INTERVENTIONS The intervention combined health coaching telephone calls and telemonitoring. Telemonitoring used electronic equipment that collected daily information about blood pressure, heart rate, symptoms, and weight. Centralized registered nurses conducted telemonitoring reviews, protocolized actions, and telephone calls. MAIN OUTCOMES AND MEASURES The primary outcome was readmission for any cause within 180 days after discharge. Secondary outcomes were all-cause readmission within 30 days, all-cause mortality at 30 and 180 days, and quality of life at 30 and 180 days. RESULTS Among 1437 participants, the median age was 73 years. Overall, 46.2% (664 of 1437) were female, and 22.0% (316 of 1437) were African American. The intervention and usual care groups did not differ significantly in readmissions for any cause 180 days after discharge, which occurred in 50.8% (363 of 715) and 49.2% (355 of 722) of patients, respectively (adjusted hazard ratio, 1.03; 95% CI, 0.88-1.20; P = .74). In secondary analyses, there were no significant differences in 30-day readmission or 180-day mortality, but there was a significant difference in 180-day quality of life between the intervention and usual care groups. No adverse events were reported. CONCLUSIONS AND RELEVANCE Among patients hospitalized for HF, combined health coaching telephone calls and telemonitoring did not reduce 180-day readmissions. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT01360203.


International Journal of Methods in Psychiatric Research | 2012

Validity study of the K6 scale as a measure of moderate mental distress based on mental health treatment need and utilization.

Judith J. Prochaska; Hai-Yen Sung; Wendy Max; Yanling Shi; Michael K. Ong

The widely‐used Kessler K6 non‐specific distress scale screens for severe mental illness defined as a K6 score ≥ 13, estimated to afflict about 6% of US adults. The K6, as currently used, fails to capture individuals struggling with more moderate mental distress that nonetheless warrants mental health intervention. The current study determined a cutoff criterion on the K6 scale indicative of moderate mental distress based on mental health treatment need and assessed the validity of this criterion by comparing participants with identified moderate and severe mental distress on relevant clinical, impairment, and risk behavior measures. Data were analyzed from 50,880 adult participants in the 2007 California Health Interview Survey. Receiver operating characteristic curve analysis identified K6 ≥ 5 as the optimal lower threshold cut‐point indicative of moderate mental distress. Based on the K6, 8.6% of California adults had serious mental distress and another 27.9% had moderate mental distress. Correlates of moderate and serious mental distress were similar. Respondents with moderate mental distress had rates of mental health care utilization, impairment, substance use and other risks lower than respondents with serious mental distress and greater than respondents with none/low mental distress. The findings support expanded use and analysis of the K6 scale in quantifying and examining correlates of mental distress at a moderate, yet still clinically relevant, level. Copyright


Circulation-cardiovascular Quality and Outcomes | 2009

Looking Forward, Looking Back: Assessing Variations in Hospital Resource Use and Outcomes for Elderly Patients With Heart Failure

Michael K. Ong; Carol M. Mangione; Patrick S. Romano; Qiong Zhou; Andrew D. Auerbach; Alein Chun; Bruce Davidson; Theodore G. Ganiats; Sheldon Greenfield; Michael A. Gropper; Shaista Malik; J. Thomas Rosenthal; José J. Escarce

Background—Recent studies have found substantial variation in hospital resource use by expired Medicare beneficiaries with chronic illnesses. By analyzing only expired patients, these studies cannot identify differences across hospitals in health outcomes like mortality. This study examines the association between mortality and resource use at the hospital level, when all Medicare beneficiaries hospitalized for heart failure are examined. Methods and Results—A total of 3999 individuals hospitalized with a principal diagnosis of heart failure at 6 California teaching hospitals between January 1, 2001, and June 30, 2005, were analyzed with multivariate risk-adjustment models for total hospital days, total hospital direct costs, and mortality within 180-days after initial admission (“Looking Forward”). A subset of 1639 individuals who died during the study period were analyzed with multivariate risk-adjustment models for total hospital days and total hospital direct costs within 180-days before death (“Looking Back”). “Looking Forward” risk-adjusted hospital means ranged from 17.0% to 26.0% for mortality, 7.8 to 14.9 days for total hospital days, and 0.66 to 1.30 times the mean value for indexed total direct costs. Spearman rank correlation coefficients were −0.68 between mortality and hospital days, and −0.93 between mortality and indexed total direct costs. “Looking Back” risk-adjusted hospital means ranged from 9.1 to 21.7 days for total hospital days and 0.91 to 1.79 times the mean value for indexed total direct costs. Variation in resource use site ranks between expired and all individuals were attributable to insignificant differences. Conclusions—California teaching hospitals that used more resources caring for patients hospitalized for heart failure had lower mortality rates. Focusing only on expired individuals may overlook mortality variation as well as associations between greater resource use and lower mortality. Reporting values without identifying significant differences may result in incorrect assumption of true differences.


Disaster Medicine and Public Health Preparedness | 2009

Variations in disaster preparedness by mental health, perceived general health, and disability status.

David Eisenman; Qiong Zhou; Michael K. Ong; Steven M. Asch; Deborah C. Glik; Anna Long

OBJECTIVES Chronic medical and mental illness and disability increase vulnerability to disasters. National efforts have focused on preparing people with disabilities, and studies find them to be increasingly prepared, but less is known about people with chronic mental and medical illnesses. We examined the relation between health status (mental health, perceived general health, and disability) and disaster preparedness (home disaster supplies and family communication plan). METHODS A random-digit-dial telephone survey of the Los Angeles County population was conducted October 2004 to January 2005 in 6 languages. Separate multivariate regressions modeled determinants of disaster preparedness, adjusting for sociodemographic covariates then sociodemographic variables and health status variables. RESULTS Only 40.7% of people who rated their health as fair/poor have disaster supplies compared with 53.1% of those who rate their health as excellent (P < 0.001). Only 34.8% of people who rated their health as fair/poor have an emergency plan compared with 44.8% of those who rate their health as excellent (P < 0.01). Only 29.5% of people who have a serious mental illness have disaster supplies compared with 49.2% of those who do not have a serious mental illness (P < 0.001). People with fair/poor health remained less likely to have disaster supplies (adjusted odds ratio [AOR] 0.69, 95% confidence interval [CI] 0.50-0.96) and less likely to have an emergency plan (AOR 0.68, 95% CI 0.51-0.92) compared with those who rate their health as excellent, after adjusting for the sociodemographic covariates. People with serious mental illness remained less likely to have disaster supplies after adjusting for the sociodemographic covariates (AOR 0.67, 95% CI 0.48-0.93). Disability status was not associated with lower rates of disaster supplies or emergency communication plans in bivariate or multivariate analyses. Finally, adjusting for the sociodemographic and other health variables, people with fair/poor health remained less likely to have an emergency plan (AOR 0.66, 95% CI 0.48-0.92) and people with serious mental illness remained less likely to have disaster supplies (AOR 0.67, 95% CI 0.47-0.95). CONCLUSIONS People who report fair/poor general health and probable serious mental illness are less likely to report household disaster preparedness and an emergency communication plan. Our results could add to our understanding of why people with preexisting health problems suffer disproportionately from disasters. Public health may consider collaborating with community partners and health services providers to improve preparedness among people with chronic illness and people who are mentally ill.


Tobacco Control | 2006

China at the crossroads: the economics of tobacco and health

Teh-wei Hu; Zhengzhong Mao; Michael K. Ong; Elisa K. Tong; M. Tao; H. Jiang; K. Hammond; Kirk R. Smith; J. De Beyer; Ayda Yurekli

Objective: To analyse economic aspects of tobacco control policy issues in China. Methods: Published and collected survey data were used to analyse economic consequences of smoking. Economic analysis was used to address the role of tobacco farmers and the cigarette industry in the Chinese economy. Results: In the agricultural sector, tobacco has the lowest economic rate of return of all cash crops. At the same time, the tobacco industry’s tax contribution to the central government has been declining. Conclusion: Economic gains become less important as the negative health impact of smoking on the population garners more awareness. China stands at a crossroads to implement the economic promises of the World Health Organization’s Framework Convention on Tobacco Control and promote the health of its population.


American Journal of Public Health | 2005

Free Nicotine Replacement Therapy Programs vs Implementing Smoke-Free Workplaces: A Cost-Effectiveness Comparison

Michael K. Ong; Stanton A. Glantz

We compared the cost-effectiveness of a free nicotine replacement therapy (NRT) program with a statewide smoke-free workplace policy in Minnesota. We conducted 1-year simulations of costs and benefits. The number of individuals who quit smoking and the quality-adjusted life years (QALYs) were the measures of benefits. After 1 year, a NRT program generated 18,500 quitters at a cost of 7020 dollars per quitter (4440 dollars per QALY), and a smoke-free workplace policy generated 10,400 quitters at a cost of 799 dollars per quitter (506 dollars per QALY). Smoke-free work-place policies are about 9 times more cost-effective per new nonsmoker than free NRT programs are. Smoke-free workplace policies should be a public health funding priority, even when the primary goal is to promote individual smoking cessation.


Journal of General Internal Medicine | 2013

Community-Partnered Cluster-Randomized Comparative Effectiveness Trial of Community Engagement and Planning or Resources for Services to Address Depression Disparities

Kenneth B. Wells; Loretta Jones; Bowen Chung; Elizabeth L. Dixon; Lingqi Tang; James Gilmore; Cathy D. Sherbourne; Victoria K. Ngo; Michael K. Ong; Susan Stockdale; Esmeralda Ramos; Thomas R. Belin; Jeanne Miranda

ABSTRACTBACKGROUNDDepression contributes to disability and there are ethnic/racial disparities in access and outcomes of care. Quality improvement (QI) programs for depression in primary care improve outcomes relative to usual care, but health, social and other community-based service sectors also support clients in under-resourced communities. Little is known about effects on client outcomes of strategies to implement depression QI across diverse sectors.OBJECTIVETo compare the effectiveness of Community Engagement and Planning (CEP) and Resources for Services (RS) to implement depression QI on clients’ mental health-related quality of life (HRQL) and services use.DESIGNMatched programs from health, social and other service sectors were randomized to community engagement and planning (promoting inter-agency collaboration) or resources for services (individual program technical assistance plus outreach) to implement depression QI toolkits in Hollywood-Metro and South Los Angeles.PARTICIPANTSFrom 93 randomized programs, 4,440 clients were screened and of 1,322 depressed by the 8-item Patient Health Questionnaire (PHQ-8) and providing contact information, 1,246 enrolled and 1,018 in 90 programs completed baseline or 6-month follow-up.MEASURESSelf-reported mental HRQL and probable depression (primary), physical activity, employment, homelessness risk factors (secondary) and services use.RESULTSCEP was more effective than RS at improving mental HRQL, increasing physical activity and reducing homelessness risk factors, rate of behavioral health hospitalization and medication visits among specialty care users (i.e. psychiatrists, mental health providers) while increasing depression visits among users of primary care/public health for depression and users of faith-based and park programs (each p < 0.05). Employment, use of antidepressants, and total contacts were not significantly affected (each p > 0.05).CONCLUSIONCommunity engagement to build a collaborative approach to implementing depression QI across diverse programs was more effective than resources for services for individual programs in improving mental HRQL, physical activity and homelessness risk factors, and shifted utilization away from hospitalizations and specialty medication visits toward primary care and other sectors, offering an expanded health-home model to address multiple disparities for depressed safety-net clients.


American Journal of Public Health | 2005

A Major State Tobacco Tax Increase, the Master Settlement Agreement, and Cigarette Consumption: The California Experience

Hai-Yen Sung; Teh-wei Hu; Michael K. Ong; Theodore E. Keeler; Mei Ling Sheu

OBJECTIVES We evaluated the combined effects on California cigarette consumption of an additional 50 cent per pack state tax imposed by Proposition 10 of January 1999 and a 45 cent per pack increase in cigarette prices stemming from the Master Settlement Agreement (MSA) of November 1998. METHODS We used quarterly cigarette sales data for the period 1984-2002 to estimate a time-series intervention model adjusting for seasonal variations and time trend. RESULTS Over the period 1999 through 2002, the combined effect was to reduce cigarette consumption by 2.4 packs per capita per quarter (1.3 billion packs total over the 4-year period) and to raise state tax revenues by


Tobacco Control | 2005

Smoking, standard of living, and poverty in China

Teh-wei Hu; Zhengzhong Mao; Yaya Liu; J. De Beyer; Michael K. Ong

2.1 billion. These effects were similar to the effects of a 25 cent per pack tax increase enacted by Proposition 99 a decade earlier, although with decreased relative effectiveness as measured by percentage of reduction in cigarette consumption divided by percentage of increase in taxation (-0.44 vs -0.60). CONCLUSIONS A major increase in price through taxation and the MSA provided a strong economic disincentive for smokers in a state with a low smoking prevalence. This effect could be reinforced if part of the MSA payments were devoted to tobacco control programs.


American Journal of Public Health | 2009

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

David Eisenman; Deborah C. Glik; Michael K. Ong; Qiong Zhou; Chi-Hong Tseng; Anna Long; Jonathan E. Fielding; Steven M. Asch

Objectives: To analyse differences in smoking behaviour and smoking expenditures among low and high income households in China and the impact of smoking on standard of living of low income households in China. Methods: About 3400 urban and rural households from 36 townships/districts in southwest China were interviewed in 2002. Cross tabulations and regression analysis were used to examine the differences in major household expenditures, including food, housing, clothing, and education between households with smokers and without smokers. Results: Lower income households with smokers paid less per pack and smoked fewer cigarettes than higher income households with smokers. Poor urban households spent an average of 6.6% of their total expenditures on cigarettes; poor rural households spent 11.3% of their total expenditures on cigarettes. Conclusion: Reducing cigarette expenditures could release household resources to spend on food, housing, and other goods that improve living standards.

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Jeanne Miranda

University of California

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Bowen Chung

University of California

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Lingqi Tang

University of California

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Hai-Yen Sung

University of California

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Qiong Zhou

University of California

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