Validation of the Illness Perception Questionnaire for Schizophrenia in a German-Speaking Sample of Outpatients with Chronic Schizophrenia (original) (raw)
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Neuroquantology, 2017
The present study has been carried out in order to evaluate psychometric characteristics of Illness Perception Questionnaire for Schizophrenia. This is a descriptive correlational research. The study population consisted of all patients with schizophrenia aging 19 to 70 years old who were hospitalized in the Psychiatric Ward of Shafa Hospital, Rasht (2016). Out of this population, a sample size of 95 people was obtained using purposive sampling, Demographic Questionnaire, Illness Perception Questionnaire for Schizophrenia (IPQS), Positive and Negative symptoms Scale (PNSS), Scale to Assess Unawareness in Mental Disorder (SUMD), Beck Depression Inventory (BDI), and Calgary Depression Scale for Schizophrenia (CDSS). Exploratory factor analysis revealed that this questionnaire is composed of 10 dimensions, the first of which explaining 24.402 percent of all of variance. Besides, concurrent validity showed that the total IPQS score had a significant correlation with SUMD equal to 0.579 at the level of 1 percent; this correlation was 0.29 at the level of 5 percent and 0.615 at the level of 1 percent in relation to BDI and CDSS, respectively. However, no correlation was observed between IPQS score and PANSS. Cronbach's alpha coefficients of reliability for IPQS scale were 0.705, and, for the subscales, between 0.599 and 0.865. This result suggests a good reliability for the Illness Perception Questionnaire for Schizophrenia. The Illness Perception Questionnaire for Schizophrenia has helpful psychometric properties that make it an appropriate analysis tool.
Journal of behavior therapy and experimental psychiatry, 2014
Clinical responsiveness to cognitive behavioural therapy for psychosis (CBTp) varies. Recent research has demonstrated that illness perceptions predict active engagement in therapy, and, thereby, better outcomes. In this study, we aimed to investigate the psychometric properties of a modification of the Illness Perceptions Questionnaire (M-IPQ) designed to predict response following CBTp. Fifty-six participants with persistent, distressing delusions completed the M-IPQ; forty before a brief CBT intervention targeting persecutory ideation and sixteen before and after a control condition. Additional predictors of outcome (delusional conviction, symptom severity and belief inflexibility) were assessed at baseline. Outcomes were assessed at baseline and at follow-up four to eight weeks later. The M-IPQ comprised two factors measuring problem duration and therapy-specific perceptions of Cure/Control. Associated subscales, formed by summing the relevant items for each factor, were reliabl...
Development and validation of the Patient’s Health Belief Questionnaire on Psychiatric Treatment
Patient Preference and Adherence
and neurosciences research group (cTs-549), institute of neurosciences, University of granada, granada, spain; 4 Biomedical research centre in Mental health net (ciBersAM), santiago Apostol hospital, University of the Basque country, Vitoria, spain Background: Our previous studies with regard to adherence to psychiatric medications measured pharmacophobia, psychological reactance, and locus of control using a 42-item questionnaire requiring ~1.5 hours for completion. This study aims to develop the Patient's Health Belief Questionnaire on Psychiatric Treatment, a 17-item inventory which requires only 15 minutes to complete. Methods: Our new questionnaire with five subscales was based on 17 items from three previously validated scales (on pharmacophobia, psychological reactance, and locus of control). In 588 consecutive Spanish psychiatric outpatients taking 1,114 psychiatric medications, we studied the responses to the questionnaire; to validate it, medication adherence was assessed by the Sidorkiewicz tool. Results: Validation of the construct was addressed by performing two exploratory factor analyses independent of each other (one for the eight-item section measuring the attitudes of patients toward psychotropic drugs and one for the nine-item section measuring perceived health locus of control [HLOC]), which led to five subscales that were called Positive and Negative Aspects of Medications, Doctor-HLOC, Internal-HLOC, and Psychological Reactance. The five subscales showed better internal consistency when corrected by number of items than the original 17-item scale. Logistic regression models of the continuous scores, dichotomized subscales, and Chi-squared Automatic Interaction Detector (CHAID) analysis indicated that all five subscales help in predicting adequate adherence, although the various subscales behave differently in different analyses. Conclusion: Future studies need to verify and further extend the preliminary findings of this study that the questionnaire may have construct and predictive validity.
Development of the illness perception questionnaire mental health
Journal of Mental Health, 2011
Background: It has been suggested that illness perceptions in mental health are related to treatment outcomes. Aims: We aimed to develop a short generic questionnaire to assess clients' problem perceptions in mental health, congruent with the Illness Perception Questionnaire (IPQ) for somatic health. -16) to psychological complaints, in particular the IPQ-R's scales that assess clients' perceptions of what their problem actually is and what its causes are. We administered our adapted instrument, the IPQ-MH, to large groups of mental health clients, and subsequently performed psychometric analyses over the scores. Results: The identity scale of the IPQ-MH differentiates different clients; the structure scale of the IPQ-MH replicates that of the original IPQ-R; the cause scale reliably measures clients' attributions of causes to their mental problems. Conclusions: We conclude that our IPQ-MH can reliably assess clients' mental health problem perceptions.
Beliefs About Illness of Patients with Schizophrenia
Journal of Postgraduate Medical Institute, 2015
Objective: To elicit the beliefs and perception of patients with schizophrenia about their illness by using Short Explanatory Model Interview (SEMI). Methodology: This cross sectional study was conducted in the department of psychiatry, Lady Reading Hospital. One hundred and three patients of schizophrenia were included in the study. Short explanatory model Interview (SEMI) was used to assess the explanatory model of illness of the sample. Four major areas covered in SEMI were “Concept” i.e., naming the illness, “Cause”, “Treatment Choice” i.e., help seeking behaviour, and “Severity” of the illness. Results: Mean age of the sample was 30.52 ± 9.41 years. Regarding Concept, 34(33%) patients who although couldn’t name any but attributed their condition to mental illness. The major response to the cause for the development of schizophrenia was stress of social issues by 22(23.30%) patients. A total of 56(54.3%) patients reported a combination of medication & spiritual healer to be the ...
Illness perceptions and adherence in bipolar disorder: An exploratory study
Comprehensive psychiatry, 2018
According to the Self-Regulation Model, illness perceptions influence an individual's coping (such as the taking of treatment) and emotional response to their illness. Emerging research suggests that this model could be used to explore illness perceptions in mental health. The aim of this exploratory study is, firstly, to measure and describe illness perception in French patients with a bipolar diagnosis and, secondly, to explore associations between illness perceptions and adherence in this population. Thirty-eight French patients with bipolar disorder completed the Illness Perception Questionnaire for Schizophrenia (except the identity dimension). We measured medication adherence with the Medication Adherence Rating Scale. Our results showed that patients with high perceptions concerning treatment control, low perceptions of negative emotions of their mental illness, low perception of consequences and high comprehension of their disorder had a better adherence. Illness percept...
Behavioural and Cognitive Psychotherapy
Background:The way people with psychosis psychologically adapt and manage the diagnosis of such a mental disorder has been considered a key factor that contributes to the emergence and aggravation of emotional problems. These beliefs about illness can be very important due to their possible association with stigma and its implications in terms of loss of roles and social status. Given the importance of these personal beliefs about the specific diagnosis of psychosis, the Personal Beliefs about Illness Questionnaire (PBIQ) and PBIQ-R have been developed.Aims:The present study aims to explore the psychometric characteristics of the Spanish version of the PBIQ-R in a sample of patients with a diagnosis of psychosis-related disorders.Method:Participants were 155 patients (54.8% male) of the Public Health Service in Andalusia (Spain). Those who consented to participate filled in the PBIQ-R, the Social Comparison Scale, and the PHQ-9 and GAD-7 to measure emotional symptoms.Results:All dim...
The predictive validity of subjective adherence measures in patients with schizophrenia
International Journal of Methods in Psychiatric Research, 2011
Despite frequent use of subjective adherence measures in patients with schizophrenia as well as other chronic conditions, there are several reports that question the validity of these instruments. Three well known, representative subjective measures are the Medication Adherence Questionnaire (MAQ), the Drug Attitude Inventory (DAI), and the Compliance Rating Scale (CRS). In this study we explored the predictive validity of these instruments in a European sample of 119 stabilized outpatients with schizophrenia. Clinical outcome variables were relapse and admission to a psychiatric hospital during a followup period of 12 months. Results indicate that the predictive validity of all three measures was poor. The MAQ was the least problematic predictor for relapse (Nagelkerke R 2 = 0.09), and time to relapse (R 2 = 0.07) and had the best sensitivity for relapse (63.6%) as well as admission (87.5%). The MAQ and CRS were both moderate predictive for admission (Nagelkerke R 2 = 0.21, and R 2 = 0.29). We conclude that the validity of the instruments studied here is questionable and have limited clinical relevance. Given the feasibility and ease of most subjective instruments, researchers may be tempted to use them but should be aware of the serious drawbacks of these instruments.
British Journal of Clinical Psychology, 2005
Objective. To design a questionnaire to assess cognitive representations of mental health problems held by relatives of people diagnosed with schizophrenia. Background. The ways in which relatives respond to patients with a diagnosis of schizophrenia has been shown to impact on outcome. Understanding variation in relatives' responses is essential if successful interventions are to be developed. This study builds on previous research exploring attributions that relatives make about symptoms. The development of a new measure to assess beliefs that relatives have about schizophrenia is reported; The Illness Perception Questionnaire for Schizophrenia-Relatives version (IPQS-Relatives). Method. Sixty-two relatives completed the IPQS-Relatives, along with measures of general psychopathology, burden, appraisal of coping, and expressed emotion. The psychometric properties of the IPQS-Relatives were analysed, including internal consistency, test-retest reliability, and discriminant and concurrent validity. Results. IPQS-Relatives subscales were shown to be internally consistent and stable over time. Correlations with measures of general psychopathology, distress, burden, coping, and criticism indicate that the subscales have good concurrent validity. Conclusions. The IPQS-Relatives can be used to assess relatives' beliefs about schizophrenia. This measure may aid family interventions that target beliefs associated with negative outcome for patients and their relatives.