Katherine Krauskopf

Depressive Symptoms, Low Adherence, and Poor Asthma Outcomes in the Elderly

Objective. To examine the impact of depressive symptoms on asthma outcomes and medication adherence in inner-city elderly patients with asthma. Methods. Cohort study of elderly asthmatics receiving primary care at three clinics in New York City and Chicago from 1 January 2010 to 1 January 2012. Depressive symptoms were ascertained with the Patient Health Questionnaire (PHQ-9). Outcomes included asthma control (Asthma Control Questionnaire, ACQ), asthma-related quality of life (Asthma Quality of Life Questionnaire, AQLQ), and acute resource utilization (inpatient and outpatient visits). Asthma medication adherence was evaluated using the Medication Adherence Reporting Scale (MARS). Results. Three hundred and seventeen participants ≥60 years were included in the study (83% women, 30% Hispanic, and 31% Black). In unadjusted analyses, participants with depressive symptoms were more likely to report poor asthma control (p < .001), worse AQLQ scores (p < .001), and higher rates of inpatient asthma-related visits (odds ratio [OR]: 2.03, 95% confidence interval [CI]: 1.04–3.99). Those with depressive symptoms also reported lower medication adherence (OR: 0.23, 95%CI: 0.10–0.54). Similar results were obtained in analyses adjusting for age, sex, race/ethnicity, income, asthma medication prescription, years with asthma, intubation history, comorbidities, and health literacy. Conclusion. In this cohort of elderly inner-city participants, depressive symptoms were associated with poorer asthma control and quality of life, as well as with lower rates of adherence to controller medications. Future work exploring possible mediators, including adherence, might elucidate the relationship between depression and poorer asthma outcomes in this population.

The association between language proficiency and outcomes of elderly patients with asthma

BACKGROUND Asthma is a growing cause of morbidity for elderly Americans and is highly prevalent among Hispanic people in the United States. The inability to speak English poses a barrier to patient-provider communication. OBJECTIVE To evaluate associations between limited English proficiency, asthma self-management, and outcomes in elderly Hispanic patients. METHOD Elderly patients with asthma receiving primary care at clinics in New York City and Chicago were studied. RESULTS Of 268 patients in the study, 68% were non-Hispanic, 18% English-proficient Hispanic, and 14% Hispanic with limited English proficiency. Unadjusted analyses showed that Hispanic persons with limited English proficiency had worse asthma control (P = .0007), increased likelihood of inpatient visits (P = .002), and poorer quality of life (P < .0001). We also found significant associations between limited English proficiency and poorer medication adherence (P = .006). Similar results were obtained in multiple regression analyses adjusting for demographics, asthma history, comorbidities, depression, and health literacy. CONCLUSION Limited English proficiency was associated with poorer self-management and worse outcomes among elderly patients with asthma. Further understanding of mechanisms underlying this relationship is necessary to develop interventions that improve asthma outcomes in this vulnerable population.

Prognosis in HIV-infected patients with non-small cell lung cancer

Background:We conducted a population-based study to evaluate whether non-small cell lung cancer (NSCLC) prognosis was worse in HIV-infected compared with HIV-uninfected patients.Methods:Using the Surveillance, Epidemiology and End Results (SEER) registry linked to Medicare claims, we identified 267 HIV-infected patients and 1428 similar controls with no evidence of HIV diagnosed with NSCLC between 1996 and 2007. We used conditional probability function (CPF) analyses to compare survival by HIV status accounting for an increased risk of non-lung cancer death (competing risks) in HIV-infected patients. We used multivariable CPF regression to evaluate lung cancer prognosis by HIV status adjusted for confounders.Results:Stage at presentation and use of stage-appropriate lung cancer treatment did not differ by HIV status. Median survival was 6 months (95% confidence interval (CI): 5–8 months) among HIV-infected NSCLC patients compared with 20 months (95% CI: 17–23 months) in patients without evidence of HIV. Multivariable CPF regression showed that HIV was associated with a greater risk of lung cancer-specific death after controlling for confounders and competing risks.Conclusion:NSCLC patients with HIV have a poorer prognosis than patients without evidence of HIV. NSCLC may exhibit more aggressive behaviour in the setting of HIV.

The association of health literacy with illness and medication beliefs among patients with chronic obstructive pulmonary disease

Background Low health literacy is associated with low adherence to self-management in many chronic diseases. Additionally, health beliefs are thought to be determinants of self-management behaviors. In this study we sought to determine the association, if any, of health literacy and health beliefs among elderly individuals with COPD. Methods We enrolled a cohort of patients with COPD from two academic urban settings in New York, NY and Chicago, IL. Health literacy was measured using the Short Test of Functional Health Literacy in Adults. Using the framework of the Self-Regulation Model, illness and medication beliefs were measured with the Brief Illness Perception Questionnaire (B-IPQ) and Beliefs about Medications Questionnaire (BMQ). Unadjusted analyses, with corresponding Cohen’s d effect sizes, and multiple logistic regression were used to assess the relationships between HL and illness and medication beliefs. Results We enrolled 235 participants, 29% of whom had low health literacy. Patients with low health literacy were more likely to belong to a racial minority group (p<0.001), not be married (p = 0.006), and to have lower income (p<0.001) or education (p<0.001). In unadjusted analyses, patients with low health literacy were less likely to believe they will always have COPD (p = 0.003, Cohen’s d = 0.42), and were more likely to be concerned about their illness ((p = 0.04, Cohen’s d = 0.17). In analyses adjusted for sociodemographic factors and other health beliefs, patients with low health literacy were less likely to believe that they will always have COPD (odds ratio [OR]: 0.78, 95% confidence interval [CI]: 0.65–0.94). In addition, the association of low health literacy with expressed concern about medications remained significant (OR: 1.20, 95% CI: 1.05–1.37) though the association of low health literacy with belief in the necessity of medications was no longer significant (OR: 0.92, 95% CI: 0.82–1.04). Conclusions In this cohort of urban individuals with COPD, low health literacy was prevalent, and associated with illness beliefs that predict decreased adherence. Our results suggest that targeted strategies to address low health literacy and related illness and medications beliefs might improve COPD medication adherence and other self-management behaviors.

Hepatitis C Virus Antibody Positivity and Predictors Among Previously Undiagnosed Adult Primary Care Outpatients: Cross-Sectional Analysis of a Multisite Retrospective Cohort Study

BACKGROUND Hepatitis C virus (HCV) testing guidance issued by the Centers for Disease Control and Prevention in 1998 recommends HCV antibody (anti-HCV) testing for persons with specified risk factors. The purpose of this study was to determine the prevalence and predictors of anti-HCV positivity among primary care outpatients and estimate the proportion of unidentified anti-HCV-positive (anti-HCV+) persons using risk-based testing. METHODS We analyzed electronic medical record data from a 4-site retrospective study. Patients were aged ≥18 years, utilized ≥1 outpatient primary care service(s) between 2005 and 2010, and had no documented evidence of prior HCV diagnosis. Among persons tested for anti-HCV, we fit a multilevel logistic regression model to identify patient-level independent predictors of anti-HCV positivity. We estimated the proportion of unidentified anti-HCV+ persons by using multiple imputation to assign anti-HCV results to untested patients. RESULTS We observed 209 076 patients for a median of 5 months (interquartile range, 1-23 months). Among 17 464 (8.4%) patients who were tested for anti-HCV, 6.4% (n=1115) were positive. We identified history of injection drug use (adjusted odds ratio [95% confidence interval], 6.3 [5.2-7.6]), 1945-1965 birth cohort (4.4 [3.8-5.1]), and elevated alanine aminotransferase levels (4.8 [4.2-5.6]) as independently associated with anti-HCV positivity. We estimated that 81.5% (n=4890/6005) of anti-HCV+ patients were unidentified using risk-based testing. CONCLUSIONS In these outpatient primary care settings, risk-based testing may have missed 4 of 5 newly enrolled patients who are anti-HCV+. Without knowing their status, unidentified anti-HCV+ persons cannot receive further clinical evaluation or antiviral treatment, and are unlikely to benefit from secondary prevention recommendations to limit disease progression and mortality.

Correlates of Hypertension in Patients with AIDS in the Era of Highly Active Antiretroviral Therapy

Background: It is unclear whether HIV-related factors modify risk of hypertension (HTN). In a cohort of patients with AIDS, the authors determined HTN incidence and prevalence and assessed associated traditional, HIV-specific, and retinal vasculature factors. Methods: Prospective observational cohort included 2390 patients with AIDS (1998-2011). Univariate analysis was used to assess the impact of traditional- and AIDS-related risk factors for HTN prevalence and incidence. Multivariate regression analyses were used to evaluate the adjusted impact of these factors. Results: Hypertension prevalence was 22% (95% confidence interval [CI] 21%-24%) and was associated with traditional HTN risk factors (age, black race, and higher weight) as well as diabetes, hyperlipidemia, time since AIDS diagnosis, and higher CD4 counts. Hypertension incidence was 64.1 per 1000 person-years (95% CI 58.7/1000-69.9/1000). Age, race, weight, and diabetes were associated with incident HTN but HIV-specific factors were not. Conclusions: Hypertension, a prevalent cardiovascular risk factor in patients with AIDS, is associated with traditional and metabolic risk factors.

Chronic Obstructive Pulmonary Disease Illness and Medication Beliefs are Associated with Medication Adherence

Abstract Almost half of patients with COPD do not adhere to their medications. Illness and medication beliefs are important determinants of adherence in other chronic diseases. Using the framework of the Common Sense Model of Self-Regulation (CSM), we determined associations between potentially modifiable beliefs and adherence to COPD medications in a cohort of English- and Spanish-speaking adults with COPD from New York and Chicago. Medication adherence was assessed using the Medication Adherence Report Scale. Illness and medication beliefs along CSM domains were evaluated using the Brief Illness Perception Questionnaire (B-IPQ) and the Beliefs about Medications Questionnaire (BMQ). Unadjusted analysis (with Cohens d effect sizes) and multiple logistic regression were used to assess the relationship between illness and medication beliefs with adherence. The study included 188 participants (47% Black, 13% Hispanics); 109 (58%) were non-adherent. Non-adherent participants were younger (p < 0.001), more likely to be Black or Hispanic (p = 0.001), to have reported low income (p = 0.02), and had fewer years of formal education (p = 0.002). In unadjusted comparisons, non-adherent participants reported being more concerned about their COPD (p = 0.011; Cohens d = 0.43), more emotionally affected by the disease (p = 0.001; Cohens d = 0.54), and had greater concerns about COPD medications (p < 0.001, Cohens d = 0.81). In adjusted analyses, concerns about COPD medications independently predicted non-adherence (odds ratio: 0.52, 95% confidence interval: 0.36–0.75). In this cohort of urban minority adults, concerns about medications were associated with non-adherence. Future work should explore interventions to influence patient adherence by addressing concerns about the safety profile and long-term effects of COPD medications.

Hepatitis C virus testing perspectives among primary care physicians in four large primary care settings.

Background. In 1998, the Centers for Disease Control and Prevention (CDC) published Recommendations for Prevention and Control of Hepatitis C Virus (HCV) Infection and HCV-Related Chronic Disease, recommending HCV testing for populations most likely to be infected with HCV. However, the implementation of risk-based screening has not been widely adopted in health care settings, and 45% to 85% of infected U.S. adults remain unidentified. Objectives. To develop a better understanding of why CDC’s 1998 recommendations have had limited success in identifying persons with HCV infection and provide information about how CDC’s 2012 Recommendations for the Identification of Chronic Hepatitis C Virus Infection Among Persons Born During 1945-1965 may be implemented more effectively. Design. Qualitative data were collected and analyzed from a multidisciplinary team as part of the Birth Cohort Evaluation to Advance Screening and Testing for Hepatitis C project. Respondents. Nineteen providers were asked open-ended questions to identify current perspectives, practices, facilitators, and barriers to HCV screening and testing. Providers were affiliated with Henry Ford Hospital, Mount Sinai Hospital, the University of Alabama, and the University of Texas Health Science Center. Results. Respondents reported the complexity of the 1998 recommendations, and numerous indicated risk factors were major barriers to effective implementation. Other hindrances to hepatitis C testing included physician discomfort in asking questions about socially undesirable behaviors and physician uncertainty about patient insurance coverage. Conclusion. Implementation of the CDC’s 2012 recommendations could be more successful than the 1998 recommendations due to their relative simplicity; however, effective strategies need to be used for dissemination and implementation for full success.

HIV and HCV health beliefs in an inner-city community

Summary.  Chronic infection with the hepatitis C virus (HCV) is more prevalent than human immunodeficiency virus (HIV) infection, but more public health resources are allocated to HIV than to HCV. Given shared risk factors and epidemiology, we compared accuracy of health beliefs about HIV and HCV in an at‐risk community. Between 2002 and 2003, we surveyed a random patient sample at a primary care clinic in New York. The survey was organized as domains of Common Sense Model of Self‐Regulation: causes (‘sharing needles’), timeline/consequences (‘remains in body for life’, ‘causes cancer’) and controllability (‘I can avoid this illness’, ‘medications may cure this illness’). We compared differences in accuracy of beliefs about HIV and HCV and used multivariable linear regression to identify factors associated with relative accuracy of beliefs. One hundred and twenty‐two subjects completed the survey (response rate 42%). Mean overall health belief accuracy was 12/15 questions (80%) for HIV vs 9/15 (60%) for HCV (P < 0.001). Belief accuracy was significantly different across all domains. Within the causes domain, 60% accurately believed sharing needles a risk factor for HCV compared to 92% for HIV (P < 0.001). Within the timeline/consequences domain, 42% accurately believed HCV results in lifelong infection compared to 89% for HIV (P < 0.001). Within the controllability domain, 25% accurately believed that there is a potential cure for HCV. Multivariable linear regression revealed female gender as significantly associated with greater health belief accuracy for HIV. Thus, study participants had significantly less accurate health beliefs about HCV than about HIV. Targeting inaccuracies might improve public health interventions to foster healthier behaviours and better hepatitis C outcomes.

Metered dose inhaler technique among inner‐city asthmatics and its association with asthma medication adherence

Inhaled medications, critical for asthma treatment, are self‐administered through metered dose inhalers (MDI). Asthma self‐management hinges on adherence to these medications and to proper MDI technique.