RESUMO
OBJECTIVE: Failure to adhere to treatment with antipsychotic medication is the most common cause of relapse among patients with schizophrenia. A novel multifamily group (MFG) intervention, informed by the Theory of Planned Behavior (TPB), demonstrated efficacy in increasing medication adherence and decreasing rehospitalizations in schizophrenia patients. This report explores the hypothesis that the improved outcomes obtained through the MFG approach were mediated by changes in the patients' attitudes toward medications, subjective norms-social influences, and perceived behavioral control of resources. METHOD: Data from a recently completed, randomized controlled trial of MFG was used to test the hypothesis that the improvement in adherence was mediated by the 3 TPB factors. Subjects were 174 Mexican American adults with schizophrenia-spectrum disorder who had participated in a study of MFG focused on improving medication adherence. Assessments occurred at baseline and at 4, 8, 12, 18, and 24 months. RESULTS: Path analysis revealed that the increased adherence associated with MFG was mediated by improvements in subjective norms but not attitudes toward medications nor perceived behavioral control. CONCLUSION: An MFG treatment specifically tailored to increase medication adherence among Mexican Americans with schizophrenia achieved its benefits by leveraging social influences through teaching family members how to support medication adherence in their ill relatives.
Assuntos
Antipsicóticos/uso terapêutico , Comportamentos Relacionados com a Saúde , Conhecimentos, Atitudes e Prática em Saúde , Adesão à Medicação/psicologia , Americanos Mexicanos/psicologia , Esquizofrenia/tratamento farmacológico , Adolescente , Adulto , Assistência à Saúde Culturalmente Competente/estatística & dados numéricos , Feminino , Humanos , Masculino , Adesão à Medicação/estatística & dados numéricos , Americanos Mexicanos/estatística & dados numéricos , Pessoa de Meia-Idade , Adulto JovemRESUMO
CONTEXT: Evidence-based interventions to improve medication adherence among patients with schizophrenia are lacking. Although family psychoeducation has demonstrated efficacy in improving outcomes in schizophrenia, empirical support for its ability to enhance medication adherence is scarce. OBJECTIVE: To determine whether a culturally adapted, multifamily group (MFG) therapy would increase medication adherence and decrease psychiatric hospitalizations for Spanish-speaking Mexican Americans with schizophrenia. DESIGN: A total of 174 Mexican American adults with schizophrenia-spectrum disorder and their key relatives were studied in a 3-armed, randomized controlled trial of MFG therapy focused on improving medication adherence. Assessments occurred at baseline and at 4, 8, 12, 18, and 24 months. SETTING: Two community mental health centers in Los Angeles, California. PARTICIPANTS: Patients had a diagnosis of schizophrenia or schizoaffective disorder with a recent exacerbation of psychotic symptoms and nonadherence to medication before enrollment. Intervention Patients participated in 1 of 2 MFGs (MFG-adherence or MFG-standard) or treatment as usual. Groups convened twice monthly in 90-minute sessions for 1 year. MAIN OUTCOME MEASURES: The Treatment Compliance Interview uses multiple sources of information to quantify medication adherence. Computerized records were used to collect information on the use of inpatient resources. RESULTS: At the end of the 1-year treatment, MFG-adherence was associated with higher medication adherence than MFG-standard or treatment as usual only (F = 6.41; P = .003). The MFG-adherence participants had a longer time to first hospitalization (χ(2) = 13.3; P = .001) and were less likely to be hospitalized than those in MFG-standard (χ(2) = 8.2; P = .04) and treatment as usual alone (χ(2) = 11.3; P < .001). Increased adherence accounted for one-third of the overall effect of treatment on the reduced risk for psychiatric hospitalization. CONCLUSION: Multifamily group therapy specifically tailored to improve medication adherence through a focus on the beliefs and attitudes of the target population is associated with improved outcome for Mexican American adults with schizophrenia-spectrum disorders. Trial Registration clinicaltrials.gov Identifier: NCT01125267.
Assuntos
Terapia Familiar , Adesão à Medicação/psicologia , Americanos Mexicanos/psicologia , Psicoterapia de Grupo , Esquizofrenia/tratamento farmacológico , Adulto , Antipsicóticos/uso terapêutico , Terapia Familiar/métodos , Feminino , Hospitalização/estatística & dados numéricos , Humanos , Los Angeles , Masculino , Adesão à Medicação/etnologia , Pacientes Desistentes do Tratamento , Escalas de Graduação Psiquiátrica , Psicoterapia de Grupo/métodos , Esquizofrenia/etnologiaRESUMO
Neuroticism is associated with greater susceptibility to the adverse effects of stress and greater exposure to the stressors associated with acculturation in U.S. born Mexican Americans. Neuroticism and acculturation have been associated with injury to crucial stress response systems and are known risk factors for certain mood and anxiety disorders. The purpose of the current study was to examine the effects of neuroticism, and acculturation on the cortisol awakening response (CAR) in healthy Mexican-American adults. Salivary cortisol samples were collected at awakening and 30, 45, and 60 min thereafter, on two consecutive weekdays from 59 healthy Mexican American adult males (26) and females (33), ages 18 to 38 years. Participants were assessed for level of neuroticism and acculturation. Data were analyzed using a mixed effects regression model with repeated measures at four time points. Results showed a significant Neuroticism×Acculturation×Time interaction. The CAR was virtually eliminated in highly acculturated Mexican Americans with greater Anglo orientation and high neuroticism compared with less acculturated Mexican Americans with greater Mexican orientation and lower neuroticism. Findings suggest that some Mexican Americans with high levels of neuroticism may be particularly susceptible to certain challenges and stressors associated with acculturation leading over time to the development of allostatic load, desensitization of the Hypothalamic CRF system and attenuation of the CAR.
Assuntos
Aculturação , Transtornos de Ansiedade/psicologia , Hidrocortisona/metabolismo , Americanos Mexicanos/psicologia , Adolescente , Adulto , Feminino , Humanos , Hidrocortisona/análise , Masculino , Saliva/química , Adulto JovemRESUMO
Social desirability, while a recognized source of respondent bias among Mexican-Americans, has not been evaluated as an explanation for the lower rate of high expressed emotion (EE) found in the family members of Mexican-Americans versus Caucasians with schizophrenia. In this study, we tested the hypothesis that the lower rate of high EE (hostility and criticism) among Mexican-Americans was the result of cultural factors impacting on how information was reported by the Mexican-American relative of a patient with schizophrenia. We compared the ratings of EE between Caucasian (N = 17) and Mexican-American (N = 44) patients with schizophrenia or schizoaffective disorder and their key relatives using the level of expressed emotion (LEE) scale (paper and pencil instrument rated by the patient and relative separately) and the Five Minute Speech Sample (observational experimenter rated). The ability of the various measures to predict relapse over two years was also examined. Contrary to our hypothesis, there were no differences between patient and family measures within ethnic group. Mexican-American patients and relatives reported lower rates of high EE than Caucasians across all measures. High EE predicted relapse across measures for Caucasian participants, but did not predict relapse for Mexican-Americans on any of the measurement instruments. We discuss the implications of these findings on cross-cultural research and family interventions for individuals with psychotic disorders.