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Biomedical subjects

Isaac D Montoya

Publications and source records attributed to Isaac D Montoya.

15 recordsLinked to original sources
PubMed2006

The association between EIC receipt and employment in a sample of drug using and non-drug using TANF recipients.

This article examines the extent to which Temporary Assistance to Needy Families (TANF) recipients file income tax returns and take advantage of the Earned Income Credit (EIC), a program specifically designed to increase the economic self-sufficiency of lower income earners by supplementing earned and other income to make working more profitable. This study consisted primarily of Black and Hispanic women (n = 317), recruited for a longitudinal study designed to examine the effects of welfare reform on drug using and non-drug using welfare recipients. At the 2-year mark, 70% of the sample reported having ever filed an income tax return, of these 76% had received an EIC. Both hours worked and earnings were positively associated with EIC receipt. In this population, EIC appears to be a successful mechanism for improving economic self-sufficiency.

Adult↗
PubMed2005

Effect of peers on employment and implications for drug treatment.

We examined the effect peers have on Temporary Assistance to Needy Families (TANF) recipients' employment behavior. Nondrug using and chronic drug using TANF recipients (n=433) participating in a study funded by the National Institute on Drug Abuse were asked how many of the people they regularly spent time with over the past 4 months had jobs and how many of them encouraged the individual to look for work. Results of a path analysis showed that age, education, and chronic drug use were significantly related to the nature of peer relationships. A significant and positive association between the number of peers that worked and the number of hours worked in the following 4 months was observed. Examining the effect of peers on labor force participation by TANF recipients is necessary to assist recipients in securing and maintaining employment.

Adolescent↗
PubMed2004

Personal adjustment and substance abuse problems in a longitudinal study of TANF recipients and the potential need for treatment.

OBJECTIVE: This study assessed the need over time for treatment of personal adjustment and substance abuse problems among chronic drug using and other recipients of Temporary Assistance for Needy Families (TANF). METHODS: Participants were administered the personal adjustment problems and substance abuse problems scales contained in the Multidimensional Addictions and Personality Profile (MAPP) at intake, one-year, and two-year interviews. RESULTS: Most participants who were not chronic users had total scale scores that would indicate no recommended referral or a referral to outpatient treatment. Approximately one-third of chronic users had scores that would indicate referral to inpatient treatment. Many chronic users had comorbid conditions but reported receiving no psychological or substance abuse treatment. CONCLUSIONS: Many TANF recipients may be experiencing coexisting personal and substance abuse related problems that are going untreated.

Adaptation, Psychological↗
PubMed2004

Topography as a contextual variable in infectious disease transmission.

OBJECTIVE: This paper examines whether or not topography is a contextual variable that indirectly influences the transmission of infectious diseases. Age, gender, race/ethnicity, education level, economic status, injection drug use, and high-risk sexual behavior are known to influence infectious diseases transmission, but the effects of topography are often overlooked. DESIGN: A sample of 395 drug users were chosen from census tracts based upon a target profile of drug use behavior and demographics for the city of Houston. HIV was chosen as the infectious disease used to test this hypothesis. SETTING: Residents of 16 census tracts in Houston, Texas participated in this study. RESULTS: The findings revealed that census tracts that were 'isolated' by topographic barriers, such as bayous, parks, railroad tracks, railway yards, major thoroughfares, freeways, and unique street grids had fewer cases of HIV than census tracks that were more accessible to thru-traffic. CONCLUSION: The research findings suggest that future research studies should consider topography as being contextually related to infectious disease transmission.

Adolescent↗
PubMed2003

New frontiers and challenges in HIV research among older minority populations.

Older racial and ethnic minorities are a rapidly growing segment of the population. HIV infection disproportionately affects minorities of all ages, presenting new challenges in research, prevention, and treatment of HIV infection. Cultural characteristics coupled with changing values and age-related beliefs can present some atypical challenges to HIV researchers and clinicians. Family relationships, language barriers, and the psychology of aging complicate these challenges even further. Older minorities also experience certain stigmas that the added burden of HIV infection only exacerbates. Effective research, prevention, and treatment must begin with sensitivity to the varied characteristics of older minorities.

Aged↗
PubMed2003

Prevalence of hepatitis C in a drug using and non-using welfare population.

CONTEXT: Drug use is a primary route for the transmission of the Hepatitis C virus (HCV). A substantial proportion of welfare recipients have been shown to be substance abusers. In addition, federal legislation has imposed limits on the number of months individuals may receive benefits and has mandated most recipients to participate in a 'work activity' in exchange for benefits. HCV symptoms may inhibit welfare recipients' ability to seek and maintain employment. OBJECTIVE: To assess the prevalence of HCV in a sample of Temporary Assistance to Needy Families (TANF) recipients and the effects of HCV antibody seropositivity on employability. DESIGN, SETTING, AND PARTICIPANTS: The sample for this study consisted of 380 individuals participating in a longitudinal study of employment patterns among TANF recipients in Houston, TX, funded by the National Institute on Drug Abuse (NIDA). Private interviews regarding welfare receipt, employment, and drug use were conducted at intake into the study and at 4-month intervals for one year. Participants agreed to a one-time blood test. Blood samples were tested for the presence of HCV antibodies by enzyme linked immunoassay. MAIN OUTCOME MEASURE: Employment status over time by HCV antibody status. RESULTS: Overall, 12% of all participants tested positive for the presence of HCV antibodies. A significantly greater proportion of chronic drug users (31%) than non-drug users (4%) tested positive for the presence of Hepatitis C antibodies. Those who tested positive for hepatitis C had significantly lower rates of employment. CONCLUSIONS: Potential infection with Hepatitis C may constitute an employment barrier for many welfare recipients.

Adult↗
PubMed2003

Posttraumatic stress disorder among Hispanic and African-American drug users.

CONTEXT: Treating high-risk substance abusers who are members of minority groups may require varied protocols depending on differences among minority groups. OBJECTIVES: To explore cocaine abuse (CA)/ dependence with physiological dependence (CDPD) and posttraumatic stress disorder (PTSD) diagnosis differences between out-of-treatment Hispanic and African American adults, in order to identify cultural differences in how experiences and attitudes affect cocaine use behaviors. DESIGN, SETTING, AND PARTICIPANTS: This study uses data collected between February and November 2000, as part of a three-year longitudinal study. A cohort of 347 out-of-treatment, Hispanic and African American cocaine-using adults from the Houston metropolitan area were interviewed to measure differences between cocaine users who are dually diagnosed and those that are not. MAIN OUTCOME MEASURES: Meeting the Diagnostic and Statistical Manual of Mental Disorders, 4th ed. criteria for dual diagnoses of CA/PTSD or CDPD/PTSD. RESULTS: For the dual diagnoses categories, 102 (29%) participants met the requirements for CA/PTSD or CDPD/PTSD. Logistic regression models were used, with CA/PTSD and CDPD/PTSD as the dependent variables. Age, race, gender, and income were used as the independent variables. Results indicate that individuals with higher income have a greater probability of developing CA/PTSD (beta = 0.919, p < 0.05). For both dual diagnoses categories of CA/PTSD and CDPD/ PTSD, results indicate that being female increases the likelihood of developing both of these dual diagnoses, (beta = 2.106, p < 0.05) or (beta = 2.510, p < 0.05). However, being an older female decreases the probability that an individual would develop these dual diagnoses (beta = -2.227, p < 0.05) (beta = -2.577, p < 0.05). CONCLUSIONS: No differences were found for race/ethnicity among the dually diagnosed Hispanics and African Americans, however, gender differences were found. Being female increases an individual's probability of developing a dual diagnosis of CA/PTSD or CDPD/PTSD. In addition to being female, being a young female further increases an individual's probability of being dually diagnosed.

Adult↗
PubMed2003

Assessing reliability and validity measures in managed care studies.

BACKGROUND: To review the reliability and validity literature and develop an understanding of these concepts as applied to managed care studies. RESULTS: Reliability is a test of how well an instrument measures the same input at varying times and under varying conditions. Validity is a test of how accurately an instrument measures what one believes is being measured. METHODS: A review of reliability and validity instructional material was conducted. CONCLUSIONS: Studies of managed care practices and programs abound. However, many of these studies utilize measurement instruments that were developed for other purposes or for a population other than the one being sampled. In other cases, instruments have been developed without any testing of the instrument's performance. The lack of reliability and validity information may limit the value of these studies. This is particularly true when data are collected for one purpose and used for another. The usefulness of certain studies without reliability and validity measures is questionable, especially in cases where the literature contradicts itself

Data Interpretation, Statistical↗
PubMed2002

Social networks and forecasting the spread of HIV infection.

This study is an initial effort to use network data to forecast the spread of HIV in a large U.S. city. Data were collected from a sample of drug users and sociodemographically matched nonusers in low-income areas of Houston, Texas. Two sample-based HIV prevalence models and two sociological models were combined with three published biological models to yield forecasts of the growth of HIV seroprevalence. The forecasts predict a compounded annual growth in HIV of between 2.4% and 16.5% among low-income residents of Houston's inner city. These results suggest that forecasts are most sensitive to the nature of the sociological model used. A random mixing model showed about a threefold overestimate of 20-year projected seroprevalence compared with the empiric network data. Thus, the collection of additional social network data is probably the most important requirement for more accurate projections.

Adult↗
PubMed2002

Mental health, drug use, and the transition from welfare to work.

This study examines the effects of drug use and work requirements on psychological distress and employment among chronic drug-using and non-drug-using welfare recipients. Using a natural history design, 442 female Temporary Assistance for Needy Families (TANF) recipients (including 251 with chronic drug use problems) were interviewed every 4 months in order to assess changes in psychological functioning, employment status, and wages. Data from the first year (four waves) indicate that employment and wages increased substantially, though less so for drug users than non-drug users. Psychological distress decreased only slightly over the study period. Growth curve analyses show that drug use had no direct effect on wages; however, drug use did significantly increase psychological distress. Both the work mandate and psychological distress contributed to wages. The authors consider the implications of these trends for the mental health service needs of drug-using TANF recipients.

Adult↗
PubMed2002

A synthesis of welfare reform policy and its impact on substance users.

OBJECTIVES: The purpose of this study was to provide an overview of welfare reform and its impact on the substance-abusing recipient. METHODS: The data for this paper were derived from sources including the US Department of Health and Human Services and the National Institute on Drug Abuse. RESULTS: The number of individuals on public assistance has decreased in the years following implementation of welfare reform legislation. Factors relevant to transitioning welfare recipients into the workplace, such as transportation and childcare, have special ramifications for the drug-using population. Additionally, these individuals require treatment for their addictions in order to become employable. The issue of concern is that recipients may be deterred from seeking benefits by various provisions of welfare reform legislation and turn instead to other sources (including illicit activities) for sustenance. CONCLUSIONS: Welfare caseloads have been dropping over the past two years. However, the number of substance abusers continues to rise. It is not known in what ways welfare reform will affect substance abusers who are welfare recipients. Important policy issues arise from this nexus; it is argued that these issues will require careful investigation.

Adolescent↗