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Featured researches published by Jan Ostermann.


American Journal of Public Health | 2006

Exploring Lack of Trust in Care Providers and the Government as a Barrier to Health Service Use

Kathryn Whetten; Jane Leserman; Rachel Whetten; Jan Ostermann; Nathan M. Thielman; Marvin S. Swartz; Dalene Stangl

OBJECTIVES We examined associations between trust of health care providers and the government and health service use and outcomes. METHODS Interviews with a sample of 611 HIV-positive individuals included an attitudinal assessment measuring beliefs concerning the creation of AIDS, information being withheld about the disease, and trust of care providers. RESULTS Trust in care providers was associated with increased HIV-related out-patient clinic visits, fewer emergency room visits, increased use of antiretroviral medications, and improved reported physical and mental health. Trusting the government was associated with fewer emergency room visits and better mental and physical health. More than one quarter of the respondents believed that the government created AIDS to kill minorities, and more than half believed that a significant amount of information about AIDS is withheld from the public. Ten percent did not trust their provider to give them the best care possible. CONCLUSIONS Distrust may be a barrier to service use and therefore to optimal health. Distrust is not isolated in minority communities but also exists among members of nonminority communities and equally interferes with their use of services and health outcomes.


Ophthalmology | 2003

Longitudinal rates of annual eye examinations of persons with diabetes and chronic eye diseases.

Paul P. Lee; Zachary W. Feldman; Jan Ostermann; Derek S. Brown; Frank A. Sloan

OBJECTIVE To assess the rate of annual eye examinations over time among older Americans with diabetes and chronic eye diseases. DESIGN Longitudinal analysis of Medicare claims data. PARTICIPANTS Random sample of Medicare beneficiaries aged 65 years or older. METHODS Beneficiaries were followed between 1991 and 1999, unless mortality or enrollment in a health maintenance organization for > 6 months in a given 12-month period intervened. All claims data (both physician and facility) during this time were analyzed for the presence of International Classification of Diseases 9 codes consistent with 1 of the 3 study conditions and the performance of eye examinations. MAIN OUTCOME MEASURES Claims submitted by optometrists, ophthalmologists, or other providers of eye care for subjects with diabetes, glaucoma, or age-related macular degeneration (ARMD). Rates were calculated on the basis of a 15-month time window for annual examinations rather than for 12 months to allow for less than full compliance with the guidelines for various reasons (e.g., bad weather). RESULTS Among those with diabetes in this population, 50% to 60% had annual eye examinations in a 15-month period. Of those followed for at least 75 months after diagnosis, about three quarters had one or more 15-month gaps between visits. For subjects diagnosed with glaucoma, most visit rates were in the 70% to 90% range per 15-month period. The percentage of subjects with at least one 15-month period with no visits was considerably lower than for diabetes. The patterns for those with ARMD were in between those for diabetes and glaucoma. Over a nine-year period, only slightly over half of persons with at least one of the study conditions complied with practice guidelines. CONCLUSIONS Annual eye examinations for persons diagnosed with diabetes, glaucoma, and ARMD are important for detecting potentially treatable vision loss among those already diagnosed with these conditions. Currently, actual rates of eye examinations for persons diagnosed with the study conditions fall far short of recommended rates. As such, approaches to enhancing longitudinal follow-up of those already in the eye care system are needed.


BMJ | 2010

WHO guidelines for antimicrobial treatment in children admitted to hospital in an area of intense Plasmodium falciparum transmission: prospective study.

Behzad Nadjm; Ben Amos; George Mtove; Jan Ostermann; Semkini Chonya; Hannah Wangai; Juma Kimera; Walii Msuya; Frank Mtei; Denise Dekker; Rajabu Malahiyo; Raimos Olomi; John A. Crump; Christopher J. M. Whitty; Hugh Reyburn

Objectives To assess the performance of WHO’s “Guidelines for care at the first-referral level in developing countries” in an area of intense malaria transmission and identify bacterial infections in children with and without malaria. Design Prospective study. Setting District hospital in Muheza, northeast Tanzania. Participants Children aged 2 months to 13 years admitted to hospital for febrile illness. Main outcome measures Sensitivity and specificity of WHO guidelines in diagnosing invasive bacterial disease; susceptibility of isolated organisms to recommended antimicrobials. Results Over one year, 3639 children were enrolled and 184 (5.1%) died; 2195 (60.3%) were blood slide positive for Plasmodium falciparum, 341 (9.4%) had invasive bacterial disease, and 142 (3.9%) were seropositive for HIV. The prevalence of invasive bacterial disease was lower in slide positive children (100/2195, 4.6%) than in slide negative children (241/1444, 16.7%). Non-typhi Salmonella was the most frequently isolated organism (52/100 (52%) of organisms in slide positive children and 108/241 (45%) in slide negative children). Mortality among children with invasive bacterial disease was significantly higher (58/341, 17%) than in children without invasive bacterial disease (126/3298, 3.8%) (P<0.001), and this was true regardless of the presence of P falciparum parasitaemia. The sensitivity and specificity of WHO criteria in identifying invasive bacterial disease in slide positive children were 60.0% (95% confidence interval 58.0% to 62.1%) and 53.5% (51.4% to 55.6%), compared with 70.5% (68.2% to 72.9%) and 48.1% (45.6% to 50.7%) in slide negative children. In children with WHO criteria for invasive bacterial disease, only 99/211(47%) of isolated organisms were susceptible to the first recommended antimicrobial agent. Conclusions In an area exposed to high transmission of malaria, current WHO guidelines failed to identify almost a third of children with invasive bacterial disease, and more than half of the organisms isolated were not susceptible to currently recommended antimicrobials. Improved diagnosis and treatment of invasive bacterial disease are needed to reduce childhood mortality.


PLOS ONE | 2009

A Comparison of the Wellbeing of Orphans and Abandoned Children Ages 6–12 in Institutional and Community-Based Care Settings in 5 Less Wealthy Nations

Kathryn Whetten; Jan Ostermann; Rachel Whetten; Brian W. Pence; Karen O'Donnell; Lynne C. Messer; Nathan M. Thielman

Background Leaders are struggling to care for the estimated 143,000,000 orphans and millions more abandoned children worldwide. Global policy makers are advocating that institution-living orphans and abandoned children (OAC) be moved as quickly as possible to a residential family setting and that institutional care be used as a last resort. This analysis tests the hypothesis that institutional care for OAC aged 6–12 is associated with worse health and wellbeing than community residential care using conservative two-tail tests. Methodology The Positive Outcomes for Orphans (POFO) study employed two-stage random sampling survey methodology in 6 sites across 5 countries to identify 1,357 institution-living and 1,480 community-living OAC ages 6–12, 658 of whom were double-orphans or abandoned by both biological parents. Survey analytic techniques were used to compare cognitive functioning, emotion, behavior, physical health, and growth. Linear mixed-effects models were used to estimate the proportion of variability in child outcomes attributable to the study site, care setting, and child levels and institutional versus community care settings. Conservative analyses limited the community living children to double-orphans or abandoned children. Principal Findings Health, emotional and cognitive functioning, and physical growth were no worse for institution-living than community-living OAC, and generally better than for community-living OAC cared for by persons other than a biological parent. Differences between study sites explained 2–23% of the total variability in child outcomes, while differences between care settings within sites explained 8–21%. Differences among children within care settings explained 64–87%. After adjusting for sites, age, and gender, institution vs. community-living explained only 0.3–7% of the variability in child outcomes. Conclusion This study does not support the hypothesis that institutional care is systematically associated with poorer wellbeing than community care for OAC aged 6–12 in those countries facing the greatest OAC burden. Much greater variability among children within care settings was observed than among care settings type. Methodologically rigorous studies must be conducted in those countries facing the new OAC epidemic in order to understand which characteristics of care promote child wellbeing. Such characteristics may transcend the structural definitions of institutions or family homes.


Aids Patient Care and Stds | 2008

Coping Strategies and Patterns of Alcohol and Drug Use among HIV-Infected Patients in the United States Southeast

Brian W. Pence; Nathan M. Thielman; Kathryn Whetten; Jan Ostermann; Virender Kumar; Michael J. Mugavero

Alcohol and drug use are common among HIV-infected patients and are important determinants of secondary transmission risk and medication adherence. As part of the Coping with HIV/AIDS in the Southeast (CHASE) Study, 611 HIV-infected patients were consecutively recruited from eight clinical care sites in five southeastern U.S. states in 2001-2002. We examined the distribution and predictors of alcohol and drug use in this sample with an emphasis on psychosocial predictors of use. In the prior 9 months, 27% of participants drank alcohol and 7% drank to intoxication at least weekly. The most common drugs used at least weekly were marijuana (12%) and crack (5%); 11% used a non-marijuana drug. 7% reported polysubstance use (use of multiple substances at one time) at least weekly. Injection drug use was rare (2% injected at least once in the past 9 months). There were few differences in alcohol and drug use across sociodemographic characteristics. Stronger adaptive coping strategies were the most consistent predictor of less frequent alcohol and drug use, in particular coping through action and coping through relying on religion. Stronger maladaptive coping strategies predicted greater frequency of drinking to intoxication but not other measures of alcohol and drug use. Those with more lifetime traumatic experiences also reported higher substance use. Interventions that teach adaptive coping strategies may be effective in reducing alcohol and substance use among HIV-positive persons.


American Journal of Public Health | 2006

Cost-Effectiveness of Free HIV Voluntary Counseling and Testing Through a Community-Based AIDS Service Organization in Northern Tanzania

Nathan M. Thielman; Helen Y. Chu; Jan Ostermann; Dafrosa Itemba; Anna Mgonja; Sabina Mtweve; John A. Bartlett; John F. Shao; John A. Crump

OBJECTIVES We evaluated the cost-effectiveness of fee-based and free testing strategies at an HIV voluntary counseling and testing (VCT) program integrated into a community-based AIDS service organization in Moshi, Tanzania. METHODS We waived the usual fee schedule during a 2-week free, advertised VCT campaign; analyzed the number of clients testing per day during prefree, free, and postfree testing periods; and estimated the cost-effectiveness of limited and sustained free testing strategies. RESULTS The number of clients testing per day increased from 4.1 during the prefree testing interval to 15.0 during the free testing campaign (P<.0001) and remained significantly increased at 7.1 (P<.0001) after resumption of the standard fees. HIV seroprevalence (16.7%) and risk behaviors were unchanged over these intervals. Modeled over 1 year, the costs per infection averted with the standard fee schedule, with a 2-week free VCT campaign, and with sustained free VCT year-round were


Aids Care-psychological and Socio-medical Aspects of Aids\/hiv | 2006

Improving health outcomes among individuals with HIV, mental illness, and substance use disorders in the Southeast

Kathryn Whetten; Susan Reif; Jan Ostermann; Brian W. Pence; Marvin S. Swartz; Rachel Whetten; Christopher J. Conover; S. Bouis; Nathan M. Thielman; Joseph J. Eron

170,


PLOS ONE | 2011

Who Tests, Who Doesn't, and Why? Uptake of Mobile HIV Counseling and Testing in the Kilimanjaro Region of Tanzania

Jan Ostermann; Elizabeth A. Reddy; Meghan M. Shorter; Charles Muiruri; Antipas Mtalo; Dafrosa Itemba; Bernard Njau; John A. Bartlett; John A. Crump; Nathan M. Thielman

105, and


Journal of Traumatic Stress | 2011

More than the loss of a parent: potentially traumatic events among orphaned and abandoned children

Kathryn Whetten; Jan Ostermann; Rachel Whetten; Karen O'Donnell; Nathan M. Thielman

92, respectively, and the costs per disability-adjusted life year gained were


BMC Public Health | 2010

Prevalence and predictors of HIV-related stigma among institutional- and community-based caregivers of orphans and vulnerable children living in five less-wealthy countries

Lynne C. Messer; Brian W. Pence; Kathryn Whetten; Rachel Whetten; Nathan M. Thielman; Karen O'Donnell; Jan Ostermann

8.72,

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Brian W. Pence

University of North Carolina at Chapel Hill

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Derek S. Brown

Washington University in St. Louis

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