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Results for “Medication Adherence”

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PubMed2005

A stress and coping model of medication adherence and viral load in HIV-positive men and women on highly active antiretroviral therapy (HAART).

The authors tested a structural model that incorporated age, time since diagnosis, social support, coping, and negative mood as predictors of medication adherence and HIV viral load on 188 men and 134 women on highly active antiretroviral therapy (HAART). The authors used psychosocial latent factors formed from baseline measures to predict latent factors of adherence, as assessed by electronic monitoring and self-report, and viral load defined by indicators assessed over a 15-month period. Results from the model indicate that greater negative mood and lower social support are related to greater use of avoidance-oriented coping strategies. Use of these coping strategies by patients on HAART is related to poorer medication adherence and, subsequently, higher viral load. This model advances researchers' understanding of the contribution of psychosocial variables in predicting treatment adherence and disease progression in HIV-positive men and women.

Adaptation, Psychological↗

PubMedDate not supplied

Relationship of oral antihyperglycemic (sulfonylurea or metformin) medication adherence and hemoglobin A1c goal attainment for HMO patients enrolled in a diabetes disease management program.

BACKGROUND: There is limited information in the primary literature regarding the relationship of medication adherence to attainment of glycosylated hemoglobin A1c (A1c) goals. The 2 oral antihyperglycemic medications, sulfonylurea and/or metformin, were chosen for retrospective analysis because they are the 2 most common oral medications used by patients with diabetes. OBJECTIVE: To describe the relationship between adherence with 1 or both of 2 oral antihyperglycemic medications (sulfonylurea and metformin) and A1c goal attainment for health maintenance organization (HMO) patients enrolled in a diabetes disease management program. METHODS: This was a retrospective, descriptive evaluation of patients enrolled in a managed care diabetes disease management program in a 188,000-member independent practice association model HMO located in the Southeast. The dataset in this analysis contained demographic, enrollment, pharmacy claims, and clinical laboratory data. Continuously enrolled patients were included if there was a documented A1c value obtained at least 90 days after the initial oral antihyperglycemic medication (sulfonylurea or metformin) prescription index date. The medication possession ratio (MPR) was calculated from the pharmacy claim records and correlated with the A1c value. RESULTS: A total of 42% of patients on sulfonylurea therapy and 46% of those on metformin reached an A1c goal of < or = 7.0%. For patients taking a sulfonylurea, the mean MPR for those who reached the predetermined A1c goal (< or = 7.0) was 0.82 (0.29) compared with 0.72 (0.31) for those patients who did not reach the A1c target goal (P < 0.001). For patients taking metformin, the mean MPR for those who reached the predetermined A1c goal was 0.77 (0.3) versus 0.62 (0.3) for those patients who did not reach the A1c target goal (P < 0.001). A Pearson correlation analysis revealed a positive relationship between the MPR and A1c for sulfonylurea (r = -0.295, P < 0.001) and for metformin (r = -0.285, P < 0.001). For those patients taking both sulfonylurea and metformin, the Pearson correlation analysis showed a positive relationship between the 2 MPRs (r = 0.65, P < 0.001). CONCLUSION: Medication adherence as measured by the MPR was higher for patients taking a sulfonylurea or metformin who reached the target A1c goal of d7.0% compared with patients taking these drugs who did not reach the target A1c goal.

Administration, Oral↗

PubMed1985

Examination of medical professions for counseling on medication adherence.

The abilities of 68 professional staff members (physicians, physician assistants, dietitians, nurses, and counselors) from 12 clinics of the Coronary Primary Prevention Trial of the Lipid Research Clinics Program in 28 specific skills fundamental to interviewing and counseling for medication adherence were examined. Each staff member was provided with confidential data regarding his or her abilities, and each clinic's trial director received the group data for his or her staff's possession and use of these skills. Analyses of trial-wide data showed substantial differences among clinics in possession and use of the skills, with overall greater strength in interviewing skills, as compared with assessment and counseling skills. No professional group consistently possessed most or fewest of these skills. It is suggested that trained non-physician personnel could be used to complement physician efforts to counsel patients for medication adherence.

Adult↗

PubMedDate not supplied

Medication adherence in pediatric asthma: reasoning, responsibility, and behavior.

OBJECTIVE: To assess child adherence to preventive asthma medications; to investigate relations between knowledge, reasoning about asthma, and responsibility for management and adherence; and to determine the association between adherence and morbidity. METHODS: Participants were 106 children with asthma and their parents. Medication adherence was electronically monitored for 1 month. Participants completed self-report measures. Children were interviewed to assess reasoning about asthma. RESULTS: Children's adherence was approximately 48% of prescribed doses. Adherence was negatively related to age (r = -.21, p <.05); minority status, F(1, 98) = 7.55, p <.01; and morbidity (r = -.26, p <.01). Age was associated with increased child knowledge (r =.47, p <.001), reasoning about asthma (tau =.23, p <.01), and responsibility for asthma management (r =.44, p <.01). These variables were not associated with adherence. CONCLUSIONS: Although older children know more about asthma and assume more responsibility for disease management, their adherence is lower than that of younger children. No association was found between adherence and child knowledge, reasoning about asthma, or responsibility for asthma management.

Administration, Inhalation↗

PubMed2004

Medication adherence and associated hemoglobin A1c in type 2 diabetes.

BACKGROUND: Tight blood glucose control has been correlated with a reduction in diabetes complications. Adherence to antidiabetic medications is crucial to achieving blood glucose control. OBJECTIVE: To assess the relationship between good glucose control [glycosylated hemoglobin (HbA1c) levels] and adherence to prescribed treatment in patients on a stable medication regimen for type 2 diabetes. METHODS: The Morisky survey, a 4-item questionnaire that predicts patient medication-taking behavior, was used to assess adherence in 301 patients. The relationship of HbA1c to Morisky score was evaluated, controlling for other variables related to patient demographics and clinical characteristics. Data were analyzed using a general linear model on log (HbA1c). RESULTS: Unadjusted mean HbA1c values (capped at 14.0%) for patients with Morisky scores of 0 or 1, 2, 3, and 4 were 8.92%, 8.67%, 7.74%, and 7.60%, respectively. Of all patients, 13.0%, 14.0%, 24.3%, and 48.8% had scores of 0 or 1, 2, 3, and 4, respectively. Good adherence (Morisky score > or = 3) was associated with a 10% lower total HbA1c (p = 0.0003) adjusted for all other factors in the model. Duration of diabetes (5-10 y) and presence of diabetes complications were also significantly associated with HbA1c (p = 0.026 and 0.002, respectively). Adherence was poor in 27% of patients. CONCLUSIONS: This study found that patients with a higher score on the Morisky scale had a lower associated HbA1c measurement. The Morisky score may be an efficient tool for identifying patients with poor medication-taking behavior who can then be targeted for directed adherence counseling services.

Adolescent↗

PubMed2002

Cholesterol control, medication adherence and illness cognition.

OBJECTIVE: To examine the relation between illness cognitions and two measures of adherence in patients with hypercholesterolaemia, a disease marked by chronically high cholesterol. DESIGN: Cross-sectional. Based on the self-regulation model (Leventhal, Diefenbach, & Leventhal, 1992), patients' illness cognitions were predicted to be related to cholesterol control and medication adherence. Patients with illness cognitions consonant with an experts' mental model of hypercholesterolaemia were expected to show better control and adherence. METHOD: Hypercholesterolaemic patients (N = 169) were recruited at a university-based general medicine clinic. Patients completed a survey that assessed beliefs about hypercholesterolaemia and medication-taking behaviour. Cholesterol levels were obtained from patients' medical charts. RESULTS: Low-density lipoprotein (LDL) cholesterol control was related to believing that hypercholesterolaemia is a stable, asymptomatic disease with severe coronary consequences, and self-report of medication adherence was related to believing that the disease has severe coronary consequences (ps <.05). LDL cholesterol differences between groups low and high in various illness beliefs ranged between 0.04 and 0.24 mmol/l (2 and 9 mg/dl) which translated to between 1% and 18% lower LDL cholesterol levels. CONCLUSION: The present study shows several relations that have not been previously demonstrated between better LDL cholesterol control and illness cognition, cognitions that were similar to an expert or physician's mental model of hypercholesterolaemia. The magnitude of differences in patient cholesterol levels was small but may be clinically important.

Journal Article↗

PubMed2007

Efficacy of a group medication adherence intervention among HIV positive women: the SMART/EST Women's Project.

This intervention sought to improve overall quality of life and health behavior in women living with human immunodeficiency virus (HIV). We contrasted the effect of a group cognitive behavioral stress management expressive supportive therapy (CBSM+) intervention plus a healthier lifestyles (HL) component with an individual educational/informational format plus HL on HIV-medication adherence. Women, n = 237, predominantly African-American and Latina, living with HIV were recruited from Miami, New York and New Jersey and randomized to group or individual conditions (ten weekly sessions) plus group or individual HL, i.e., four conditions. Women reported relatively high levels of adherence at baseline. Participants in any of the group conditions increased self-reported adherence and emotion-focused coping skills in comparison with individual participation. This study suggests that group interventions may be an important adjunct in increasing medication adherence for HIV positive women.

Adaptation, Psychological↗

PubMed2006

Culturally responsive interventions to enhance immunosuppressive medication adherence in older African American kidney transplant recipients.

CONTEXT: Immunosuppressive medication nonadherence is variable among older kidney transplant recipients and is a problem in African American recipients despite the severe consequences of this behavior. Many factors place older African American recipients at risk for medication nonadherence. OBJECTIVE: To provide an overview of interventions to enhance immunosuppressive medication adherence in older African American kidney transplant recipients using a culturally responsive model. Culturally sensitive, innovative, and transformation interventions are discussed. Situations when each intervention would be most and least appropriate are described. CONCLUSION: Moving culturally appropriate interventions forward into practice and testing their effectiveness in improving adherence outcomes in vulnerable, older African American kidney transplant recipients is a worthy practice and research goal for transplant nursing.

Black or African American↗

PubMed2003

Effect of medication adherence on survival of HIV-infected adults who start highly active antiretroviral therapy when the CD4+ cell count is 0.200 to 0.350 x 10(9) cells/L.

BACKGROUND: The safety of delaying highly active antiretroviral therapy (HAART) in HIV-infected patients is uncertain when the CD4+ cell count declines below 0.350 x 10(9) cells/L. OBJECTIVE: To evaluate the effect of baseline CD4+ cell count and adherence to HAART on survival rates. DESIGN: Prospective observational study. SETTING: Province-wide Canadian HIV/AIDS treatment program. PATIENTS: 1422 HIV-infected persons initiating HAART between 1 August 1996 and 31 July 2000 and followed through 31 March 2002. MEASUREMENTS: Patients were stratified by baseline CD4+ cell count and adherence level. Cumulative mortality rates were evaluated by using Kaplan-Meier methods and Cox regression-estimated adjusted relative hazards. RESULTS: Kaplan-Meier analyses showed no survival benefit of starting HAART at a CD4+ count of 0.200 x 10(9) cells/L or greater among adherent patients. Adjusted analysis showed that compared with adherent patients who initiated HAART at a CD4+ cell count of 0.350 x 10(9) cells/L or greater, nonadherent patients who initiated HAART when the CD4+ cell count was 0.200 to 0.349 x 10(9) cells/L had statistically elevated mortality rates (adjusted relative hazard, 2.56 [95% CI, 1.36 to 4.84]; P = 0.004). However, compared with adherent patients who initiated HAART at a CD4+ cell count of 0.350 x 10(9) cells/L or greater, adherent patients who initiated HAART when the CD4+ cell count was 0.200 to 0.349 x 10(9) cells/L had statistically similar mortality rates (adjusted relative hazard, 0.82 [CI, 0.45 to 1.49]; P > 0.2). CONCLUSIONS: Delaying HAART until the CD4+ cell count falls to 0.200 x 109 cells/L does not increase the mortality rate in HIV-infected patients with good medication adherence. Mortality rates increase if HAART is initiated below 0.200 x 10(9) cells/L. Also, nonadherent patients have higher mortality rates than adherent patients with similar CD4+ cell counts. Above a CD4+ cell count of 0.200 x 10(9) cells/L, medication adherence is the critical determinant of survival, not the CD4+ cell count at which HAART is begun.

Adult↗

PubMed2002

Medication adherence of individuals with a first episode of psychosis.

OBJECTIVE: To determine rates of adherence to antipsychotic medication in first episode patients and the correlates of adherence in this group. METHOD: Subjects were the first 200 admissions to an Early Psychosis Program. Adherence was determined on a three-point scale. Symptoms, medication side-effects, quality of life, substance use and family involvement were examined longitudinally. RESULTS: In their first year in the program 39% were non-adherent, 20% inadequately adherent, and 41% adherent. Non-adherent patients demonstrated more positive symptoms, more relapses, more alcohol and cannabis use, reduced insight, and poorer quality of life. They were younger, had an earlier age of onset and less likely to have a family member involved in treatment. CONCLUSION: Results for this group are similar to those reported in the literature. Correlates are often the consequence of non-adherence. Non-compliance has to be anticipated and relationships maintained with patients and families to intervene as soon as possible to minimize the consequence of non-compliance.

Adult↗

PubMed2005

Should patients with persistent severe asthma be monitored for medication adherence?

BACKGROUND: Poor asthma outcomes often result from patients not following physician medication recommendations (ie, nonadherence). Estimates suggest that 50% of patients with asthma do not follow physician medication recommendations. OBJECTIVE: To examine the rationale for making available objective medication adherence monitors for physicians to improve the quality of care for patients with severe persistent asthma. METHODS: Review of the literature was undertaken in the following areas related to asthma: cost, morbidity, adherence, adherence monitoring, outcomes, and guidelines. RESULTS: Patients with severe asthma are at risk for nonadherence because of (1) the use of multiple medications to control symptoms, (2) coexisting disease states, (3) the occurrence of depression and anxiety, and (4) the high cost of care. Research studies have demonstrated the effectiveness of objective monitoring as part of multiple clinical strategies to improve adherence and reduce morbidity and the cost of asthma care. Without objective adherence monitoring, physicians may not accurately assess nonadherence as the cause of treatment failure. This may lead to inappropriate increases in therapy, diagnostic studies, and consultations and may leave the patient at risk for persistent symptoms, morbidity, and death. CONCLUSION: By correctly assessing nonadherence as the cause of treatment failure in patients with not only severe asthma but mild and moderate disease as well, practicing physicians may improve the quality of care provided.

Anti-Asthmatic Agents↗

PubMedDate not supplied

Primary medication adherence in a rural population: the role of the patient-physician relationship and satisfaction with care.

INTRODUCTION: Although correlates of overall medication adherence have been studied, little is known about primary medication non-adherence-patients' failing to fill a prescription provided by a practitioner-and whether it relates to how patients view their physician, satisfaction with their care, and how easy or hard it is for them to travel for care. METHODS: This study uses telephone survey data from adults in 150 rural counties in 8 southeastern states. Bivariate and multivariable analyses were used to identify factors associated with adults' self-reports of delaying or not filling prescriptions. RESULTS: Of the 3926 respondents who had received care in the previous year, 894 (21.6%) reported that they had delayed or did not fill a prescription over that time. In multivariate analysis, delaying or not filling prescriptions was more common among respondents who were under age 65, African American, reported incomes less than 25,000 dollars, and reported fair or poor health. Non-adherence was also more common among patients who reported transportation problems, a lack of confidence in their doctor's ability to help them, a lack of satisfaction with the concern shown them by their physicians, and a lack of satisfaction with how welcome and comfortable they are made to feel by office staff. CONCLUSIONS: Prescription primary non-adherence is prevalent in the rural South. Adherence may be improved by remedying patient dissatisfaction and lack of confidence in their physicians as well as addressing transportation barriers.

Adolescent↗

PubMed2002

Antipsychotic medication adherence: is there a difference between typical and atypical agents?

OBJECTIVE: Pharmacy refill records were used to compare medication adherence in outpatient veterans receiving typical versus atypical antipsychotic medications. METHOD: Consecutive patients meeting selection criteria and receiving prescriptions for haloperidol (N=57), perphenazine (N=60), risperidone (N=80), olanzapine (N=63), and quetiapine (N=28) over a 3-month period were identified from a computerized database. The hospital policy at the time of this study required failure in trials of at least two typical antipsychotics before initiation of an atypical agent. Patients' adherence with the antipsychotic regimen was calculated by analyzing refill records for up to 12 months. The cumulative mean gap ratio (the number of days when medication was unavailable in relation to the total number of days) and the compliant fill rate (the number of prescription fills indicating adherence in relation to the total number of prescription fills) at 6 and 12 months were calculated. RESULTS: Adherence rates at 6 and 12 months were moderately higher in patients who received atypical antipsychotics than in those who received typical agents. Cumulative mean gap ratios were 23.2% for typical and 14.1% for atypical antipsychotics at 12 months; thus, patients who received typical agents were without medication for an average of 7 days per month, compared with 4 days per month for those who received atypical agents. At 12 months, compliant fill rates were 50.1% for typical and 54.9% for atypical antipsychotics. CONCLUSIONS: Interventions to improve adherence are warranted even for patients who receive atypical antipsychotic medications.

Adult↗

PubMed2006

The role of family caregivers in HIV medication adherence.

This study examines the role that mid-life and older wives and mothers play in promoting medication adherence among their HIV-infected husbands or adult sons who require daily living assistance. Interviews were conducted with 112 caregiving dyads, with caregivers reporting on their own behaviours and attitudes towards medications, and care-recipients (persons living with HIV [PLH]) providing information about their own adherence practices. By examining how caregiver characteristics, behaviours, and attitudes may influence PLH adherence it is explicitly recognized that caregivers and PLH are linked within a caregiving dyad. Findings indicate that caregivers often remind PLH to take medications, but these reminders are not significantly associated with adherence. Caregivers also report strong attitudes about medication hassles, concerns over treatment failure and general concerns about adherence. Controlling for background characteristics, high perceived adherence hassles on the part of the caregiver were associated with low PLH adherence, providing evidence of shared influence within the caregiving dyad. Adherence interventions may maximize their effectiveness if they consider the role of the family caregiver because these data suggest that caregiver attitudes are linked with PLH adherence behaviours.

Adult↗

PubMed2006

Promoting medication adherence in children.

The problem of getting children to follow a treatment regimen is widespread and is frustrating for physicians. The extent to which any patient adheres to a medical regimen is an essential determinant of clinical success. Strategies to improve adherence in children include using simplified drug regimens (e.g., once-daily dosing), pleasant-tasting medicines, liquid or other nonpill formulations, regular phone contact between parents and physicians, reminders, information counseling, self-management plans, and other forms of individualized supervision or attention. Physicians also can encourage adherence by providing a dearly written explanation or patient information sheets that list generic and brand names, dosage, schedule, duration, and common side effects and practical ways of coping with them. Physicians, children, and parents should develop a mutually agreed-upon treatment plan. Having the child participate in devising the plan improves adherence.

Child↗

PubMed1994

Cognitive impairment and medication adherence.

1. The findings of this study are congruent with previous work that found that subjects' knowledge about medication is not necessarily correlated with adherence to medication regimens. 2. The nature and experience of forgetting medications merits further investigation. Asking patients about forgetting medication is easy to do, and many methods of compensating for forgetfulness are available. 3. Cognitive impairment was not associated with medication adherence. Cognitively impaired elders were likely to have caregivers assisting in the administration of their medication in the period immediately after discharge from acute care facilities.

Aged↗

PubMed2005

Development and implementation of a medication adherence training instrument for persons living with HIV: the MATI.

Recent advances in the medical management of HIV offer the potential for increased longevity, improved quality of life, and the treatment of HIV as a chronic, rather than terminal, illness. The advent of highly active antiretroviral therapy (HAART) has required the necessity of strict adherence to complex medication regimens. As a vital factor in the successful outcome of HAART therapy, adherence-focused treatment represents a teaching opportunity for practitioners involved in the care and management of persons who are HIV positive. Scores of articles have been published regarding nonadherence, and numerous strategies have been employed to encourage adherence. Despite these efforts, medication adherence continues to present problems for patients and health care providers. This article discusses prior and existing adherence interventions for people living with HIV and outlines the rationale related to the development of a structured protocol, the Medication Adherence Training Instrument (MATI), for the evaluation and enhancement of HIV medication adherence by health care providers. The key components to the MATI throughout all sessions are to provide information, enhance motivation, and assess current levels of adherence and HIV-related knowledge.

Adult↗

PubMed2002

Validation of a simplified medication adherence questionnaire in a large cohort of HIV-infected patients: the GEEMA Study.

OBJECTIVE: To assess the effectiveness of the simplified medication adherence questionnaire (SMAQ) in identifying non-adherent patients. DESIGN: Prospective observational study of adherence. The six-item SMAQ was developed. The following aspects were evaluated: (i) criterion validity, comparison with electronic adherence monitoring; (ii) construct validity, association between adherence, as defined by the SMAQ, and virological outcomes; and (iii) reliability, internal consistency and reproducibility. PATIENTS: A group of 3004 unselected HIV patients who had initiated nelfinavir therapy combined with other antiretroviral drugs [21% naive, 15% protease inhibitor (PI)-naive, 64% PI-experienced] between January 1998 and December 1999 were enrolled in 69 hospitals in Spain. The SMAQ was administered at months 3, 6 and 12. RESULTS: The SMAQ showed 72% sensitivity, 91% specificity and a likelihood ratio of 7.94 to identified non-adherent patients, compared with the medication-event monitoring system (40 patients evaluated). At month 12, 1797 patients were evaluated, of whom 32.3% were defined as non-adherent; viral load < 500 copies/ml found in 68.3% of the adherent, and 46% of the non-adherent patients. A logistic regression analysis of PI-naive patients was performed, including age, sex, baseline viral load > 5 log10/ml, CD4 cell count < 200 x 10(6)/l, and non-adherence as independent variables. Non-adherence was the only significant risk factor in failing to achieve virological suppression. Cronbach's alpha internal consistency coefficient was 0.75, and overall inter-observer agreement was 88.2%. CONCLUSION: The SMAQ appears to be an adequate instrument with which to assess adherence in HIV-infected patients, and may be applied in most clinical settings.

Adult↗