Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 16 de 16
Filter
1.
Behav Med ; 47(4): 296-310, 2021.
Article in English | MEDLINE | ID: mdl-32396039

ABSTRACT

Previous studies have shown an association between the number of withdrawal attempts and increased severity of withdrawal symptoms in patients with an alcohol use disorder (AUD). An underlying allostatic neuroadaptive response may negatively affect the withdrawal pathology after alcohol discontinuation. The objective of the present research is to examine the intensification of psychiatric distress, craving, and post-detoxification drinking outcomes, which may result from these neurobehavioral alternations. Fifty-two AUD inpatients were divided into two groups: <2 previous detoxifications and ≥2 previous detoxifications. Patients completed the Dutch version of the Severity of Withdrawal Scale (SWS), Depression Anxiety Stress Scales (DASS-21), VAS Craving, and Desires for Alcohol Questionnaire (DAQ). Linear mixed effects models were applied, controlling for the number of drinks consumed in the past 30 days and alcohol drinking history (years). Patients who had undergone ≥2 detoxifications reported statistically significantly higher scores on SWS withdrawal and DASS psychiatric symptoms. Also, craving patterns were different between groups, as shown by a statistically significant interaction effect for VAS craving for the time of day factor (morning vs. evening). No statistically significant group differences were found for DAQ scores and post-detoxification drinking outcomes. Due to relatively low 1-month follow-up rates our power was limited to detect such a difference. The present study contributes to the existing body of evidence that multiple detoxifications are associated with aggravated withdrawal/psychiatric pathology, and distinct diurnal patterns of VAS craving. Several clinical implications are discussed and alternative strategies are provided to manage repeated cycles of detoxifications.


Subject(s)
Alcoholism , Substance Withdrawal Syndrome , Alcohol Drinking , Craving , Humans , Surveys and Questionnaires
3.
Front Psychol ; 8: 1409, 2017.
Article in English | MEDLINE | ID: mdl-28868042

ABSTRACT

Objective: Cognitive Behavioral Therapy (CBT) is an effective intervention for patients with panic disorder (PD). From a theoretical perspective, Eye Movement Desensitization and Reprocessing (EMDR) therapy could also be useful in the treatment of PD because: (1) panic attacks can be experienced as life threatening; (2) panic memories specific to PD resemble traumatic memories as seen in posttraumatic stress disorder (PTSD); and (3) PD often develops following a distressing life event. The primary objective of this Randomized Controlled Trial (RCT), was to compare EMDR therapy with CBT for PD and determine whether EMDR is not worse than CBT in reducing panic symptoms and improving Quality Of Life (QOL). Methods: Two-arm (CBT and EMDR) parallel RCT in patients with PD (N = 84). Patients were measured at baseline (T1), directly after the last therapy session (T2), and 3 months after ending therapy (T3). Non-inferiority testing (linear mixed model with intention-to-treat analysis) was applied. Patients were randomly assigned to 13 weekly 60-min sessions of CBT (N = 42) or EMDR therapy (N = 42). Standard protocols were used. The primary outcome measure was severity of PD at T3, as measured with the Agoraphobic Cognitions Questionnaire (ACQ), the Body Sensations Questionnaire (BSQ), and the Mobility Inventory (MI). The secondary outcome measure was QOL, as measured with the World Health Organization Quality of Life short version (WHOQOL-Bref), at T3. Results: The severity of PD variables ACQ and BSQ showed non-inferiority of EMDR to CBT, while MI was inconclusive (adjusted analyses). Overall QOL and general health, Psychological health, Social relationships, and Environment showed non-inferiority of EMDR to CBT, while Physical health was inconclusive. Conclusion: EMDR therapy proved to be as effective as CBT for treating PD patients. Trial Registration: Dutch Trial Register, Nr. 3134 http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=3134.

4.
Article in English | MEDLINE | ID: mdl-28228453

ABSTRACT

BACKGROUND: Patients with nonobstructive coronary artery disease (NOCAD; wall irregularities, stenosis <60%), and women with NOCAD in particular, remain underinvestigated. We examined sex and gender (S&G) differences in health status, psychological distress, and personality between patients with NOCAD and the general population, as well as S&G differences within the NOCAD population. METHODS AND RESULTS: In total, 523 patients with NOCAD (61±9 years, 52% women) were included via coronary angiography and computed tomography as part of the TWIST (Tweesteden Mild Stenosis) study. Generic health status (12-item Short Form physical and mental scales and fatigue), psychological distress (Hospital Anxiety and Depression Scale anxiety and depressive symptoms and Global Mood Scale negative and positive affect), and personality (Type D personality) were compared between patients with NOCAD and an age- and sex-matched group of 1347 people from the general population. Frequency matching was performed to obtain a similar sex distribution in each age-decile group. Both men and women with NOCAD reported impaired health status, more psychological distress, and Type D personality compared with men and women in the reference group. Women reported more psychosocial distress compared with men, but no significant sex-by-group interaction effects were observed. Women with NOCAD reported impaired health status, more anxiety, and less positive affect, but no differences in depressive symptoms, angina, or Type D personality when compared with men with NOCAD. Age, education, employment, partner, and alcohol use explained these S&G differences within the NOCAD group. CONCLUSIONS: In both men and women, NOCAD was associated with impaired health status, more psychological distress, and Type D personality when compared with a reference population. Factors reflecting S&G differences explained these S&G findings in patient-reported outcomes. CLINICAL TRIAL REGISTRATION: URL: http://www.clinicaltrials.gov. Unique identifier: NCT01788241.


Subject(s)
Coronary Artery Disease/psychology , Coronary Stenosis/psychology , Health Status Disparities , Personality , Stress, Psychological/psychology , Age Distribution , Age Factors , Aged , Anxiety/diagnosis , Anxiety/epidemiology , Anxiety/psychology , Case-Control Studies , Comorbidity , Computed Tomography Angiography , Coronary Angiography/methods , Coronary Artery Disease/diagnostic imaging , Coronary Artery Disease/epidemiology , Coronary Stenosis/diagnostic imaging , Coronary Stenosis/epidemiology , Depression/diagnosis , Depression/epidemiology , Depression/psychology , Female , Humans , Male , Middle Aged , Netherlands/epidemiology , Predictive Value of Tests , Risk Assessment , Risk Factors , Severity of Illness Index , Sex Distribution , Sex Factors , Stress, Psychological/diagnosis , Stress, Psychological/epidemiology , Surveys and Questionnaires , Type D Personality
5.
Muscle Nerve ; 55(5): 698-705, 2017 05.
Article in English | MEDLINE | ID: mdl-27623990

ABSTRACT

INTRODUCTION: In this study we aimed to identify prognostic factors of ulnar neuropathy at the elbow (UNE) and developed a scoring system to establish the prognosis. METHODS: We collected baseline clinical, electrophysiologic, and ultrasonographic data from 2 cohorts. The outcomes for all patients were determined on follow-up. Prognostic factors were determined using single and multiple variable analyses. A points system was developed to determine the risk for an unfavorable outcome. RESULTS: Of the 220 patients with UNE 178 (81%) could be re-evaluated. Four variables were retained in the prediction model for a points system. An unfavorable outcome was associated with right-sided UNE, more severe weakness of the abductor digiti minimi (ADM), and more pronounced ulnar nerve thickening. A compound muscle action potential amplitude reduction across the elbow of ≥16% (particularly if ≥ 50%) was associated with a more favorable outcome. CONCLUSION: Outcome in UNE may be predicted by scoring 4 parameters. Muscle Nerve 55: 698-705, 2017.


Subject(s)
Neural Conduction/physiology , Ulnar Nerve/physiopathology , Ulnar Neuropathies/diagnosis , Ultrasonography/methods , Adult , Aged , Aged, 80 and over , Electrodiagnosis , Electromyography , Female , Humans , Male , Middle Aged , Muscle, Skeletal/diagnostic imaging , Muscle, Skeletal/physiopathology , Neurologic Examination , Prognosis , Ulnar Nerve/diagnostic imaging , Ulnar Neuropathies/diagnostic imaging , Ulnar Neuropathies/physiopathology , Young Adult
6.
J Clin Oncol ; 33(31): 3550-9, 2015 Nov 01.
Article in English | MEDLINE | ID: mdl-26304900

ABSTRACT

PURPOSE: This study was conducted to longitudinally assess the impact of an automatically generated survivorship care plan (SCP) on patient-reported outcomes in routine clinical practice. Primary outcomes were patient satisfaction with information and care. Secondary outcomes included illness perceptions and health care use. METHODS: Twelve hospitals were randomly assigned to SCP care or usual care in a pragmatic, cluster randomized trial. Newly diagnosed patients with endometrial cancer completed questionnaires after diagnosis (n = 221; 75% response), 6 months (n = 158), and 12 months (n = 147). An SCP application was built in the Web-based ROGY (Registration System Oncological Gynecology). By clicking the SCP button, a patient-tailored SCP was generated. RESULTS: In the SCP care arm, 74% of patients received an SCP. They reported receiving more information about their treatment (mean [M] = 57, standard deviation [SD] = 20 v M = 47, SD = 24; P = .03), other services (M = 35, SD = 22 v M = 25, SD = 22; P = .03), and different places of care (M = 27, SD = 25 v M = 23, SD = 26; P = .04) than the usual care arm (scales, 0 to 100). However, there were no differences regarding satisfaction with information or care. Patients in the SCP care arm experienced more symptoms (M = 3.3, SD = 2.0 v M = 2.6, SD = 1.6; P = .03), were more concerned about their illness (M = 4.4, SD = 2.3 v M = 3.9, SD = 2.1; P = .03), were more affected emotionally (M = 4.0, SD = 2.2 v M = 3.7, SD = 2.2; P = .046), and reported more cancer-related contact with their primary care physician (M = 1.8, SD = 2.0 v M = 1.1, SD = 0.9; P = .003) than those in the usual care arm (scale, 1 to 10). These effects did not differ over time. CONCLUSION: The present trial showed no evidence of a benefit of SCPs on satisfaction with information and care. Furthermore, SCPs increased patients' concerns, emotional impact, experienced symptoms, and the amount of cancer-related contact with the primary care physician. Whether this may ultimately lead to more empowered patients should be investigated further.


Subject(s)
Endometrial Neoplasms/genetics , Endometrial Neoplasms/mortality , Patient Outcome Assessment , Physician-Patient Relations , Aged , Automation , Female , Humans , Longitudinal Studies , Medical Oncology/methods , Middle Aged , Netherlands , Patient Care Planning , Patient Satisfaction , Physicians, Primary Care , Registries , Social Class , Software , Surveys and Questionnaires , Survivors , Time Factors
7.
Am J Cardiol ; 115(6): 771-7, 2015 Mar 15.
Article in English | MEDLINE | ID: mdl-25623734

ABSTRACT

To date, no study has assessed the course of patient-reported health status in patients with an implantable cardioverter defibrillator (ICD). Studying health status trajectories and their baseline determinants would permit the identification of patients at risk for poor health outcomes after ICD implantation. A combined cohort of 1,222 patients with an ICD (79% men; age = 61.4 [11.2] years) completed the 12-Item Short-Form Health Survey at baseline and 2 to 3 months and 12 to 14 months after implantation. Latent class analyses were used to identify trajectories and predictors of health status over time. Most health status trajectories showed a stable pattern after short-term follow-up, with differences between trajectories being mainly related to differences in absolute levels of health status. Seven trajectories were identified for physical health status. Being unemployed, symptomatic heart failure, ICD shock, psychotropic medication, negative affectivity, and type D personality were identified as independent determinants of poorer physical health status. For mental health status, 6 trajectories were identified. Younger age, low educational level, symptomatic heart failure, renal failure, no use of ACE inhibitors, psychotropic medication, negative affectivity, and type D personality were identified as independent determinants of poorer mental health status. In conclusion, the population with an ICD seems to be heterogeneous in terms of patient-reported physical and mental health status. Patients with an ICD who present with poor health status and a distressed personality profile should be timely identified and monitored as they may benefit from cardiac rehabilitation in combination with behavioral intervention.


Subject(s)
Defibrillators, Implantable/psychology , Health Status , Aged , Female , Follow-Up Studies , Health Surveys , Hospitals , Humans , Male , Middle Aged , Netherlands , Prospective Studies , Risk Assessment , Risk Factors , Surveys and Questionnaires
8.
J Cancer Surviv ; 8(4): 555-64, 2014 Dec.
Article in English | MEDLINE | ID: mdl-24820429

ABSTRACT

PURPOSE: The purpose of this study is to prospectively assess anxiety and depression among patients with Hodgkin lymphoma (HL) and diffuse large B cell lymphoma (DLBCL). Also, to compare its prevalence with a normative population, identify subgroups with more anxiety and depression, and assess its impact on health-related quality of life (HRQoL). METHODS: The population-based Eindhoven Cancer Registry was used to select patients diagnosed with HL or DLBCL from 1999 to 2010, 489 responded (T1). The HADS was completed four times (T1-T4), with a 1-year interval. Linear mixed-models were used to assess the course of anxiety and depression and identify high-risk subgroups. RESULTS: Both anxiety and depression were reported more often by patients compared to the normative population (p < 0.05). Over the four time points, approximately 10% of patients reported to be always and 15% reported to be sometimes anxious or depressed. Anxiety and depression did not improve in time. Patients with comorbidity and patients who were lower educated reported higher anxiety and depression scores (p < 0.05). Younger DLBCL patients reported higher anxiety scores, whereas older DLBCL patients reported higher depression scores over time (p < 0.05). Global health status/HRQoL was clinically relevant lower in patients with anxiety and depression and this appeared to be constant over time. CONCLUSION: More HL and DLBCL patients experience anxiety and depression compared to their counterparts in the general population and it did not improve in time. IMPLICATION FOR CANCER SURVIVORS: Clinicians should be aware that former lymphoma patients with anxiety and depression have a deteriorated global health status/HRQoL and refer patients to suitable aftercare when necessary.


Subject(s)
Anxiety/etiology , Depression/etiology , Hodgkin Disease/psychology , Lymphoma, B-Cell/psychology , Quality of Life , Adult , Aged , Aged, 80 and over , Female , Humans , Longitudinal Studies , Male , Middle Aged , Prospective Studies , Survivors
9.
Eur J Heart Fail ; 16(4): 384-93, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24515393

ABSTRACT

AIMS: Some, but not all, studies have shown that patient-reported health status, including symptoms, functioning, and health-related quality of life, provides additional information to traditional clinical factors in predicting prognosis in heart failure patients. To evaluate the overall evidence, the association of disease-specific health status on mortality in heart failure was examined through a systematic review and meta-analysis. METHODS AND RESULTS: Prospective cohort studies that assessed the independent association of disease-specific health status with mortality in heart failure were selected. Searching PubMed (until March 2013) resulted in 17 articles in the systematic review and 17 studies in the meta-analysis. About half of the studies reported a significant relationship between disease-specific health status and mortality in heart failure, while the remainder found no association. A larger sample size increased the chance of identification of a significant association. The results of the meta-analysis (including studies using a dichotomized heart failure-specific health status variable as predictor) showed that heart failure patients reporting poor disease-specific health status had a 39% increased risk of dying [hazard ratio 1.39 (1.25­1.54)] when compared with patients experiencing moderate or good disease-specific health status. CONCLUSION: Patient-reported health status was an independent risk indicator for mortality in heart failure patients and may facilitate the identification of patients at high risk for poor prognosis above and beyond traditional risk variables. These findings suggest that patient-reported health status should be routinely assessed in determining prognosis, as this information cannot be captured from patients' medical records.


Subject(s)
Health Status Indicators , Heart Failure/mortality , Female , Heart Failure/diagnosis , Humans , Male , Prospective Studies , Quality of Life , Risk Factors
10.
Brain Behav Immun ; 38: 59-65, 2014 May.
Article in English | MEDLINE | ID: mdl-24407045

ABSTRACT

Depression adversely affects prognosis in heart failure (HF) patients. Inflammation is indicated as potential biological pathway in this co-morbidity. Since increased levels of the cytokine Neutrophil Gelatinase-Associated Lipocalin (NGAL) are predictive for HF prognosis, and recently indicated in patients with major depression, this study examined the association of serum NGAL levels with symptoms of depression in patients with HF. Serum NGAL levels were measured in 104 patients with HF (left ventricular ejection fraction, LVEF⩽40). Depression, evaluated using the Beck Depression Inventory (BDI; total score, somatic and cognitive component), and the Hamilton Depression Rating scale (HAMD), at baseline and 12months follow-up, was associated with NGAL levels using mixed model analysis. Analyses were adjusted for demographics measures, disease severity indicators, inflammation, comorbidity and medication. Increased serum NGAL levels were significantly associated with depression measured by HAMD (baseline: r=0.25, p<.05) and BDI (baseline: r=0.22, p<.05; 12months: r=0.37, p<.01). This association remained significant after adjustment for covariates; age, sex, time, LVEF, and creatinine (HAMD, t=2.01, p=.047; BDI, t=2.28, p=.024). NGAL was significantly associated with somatic- (p=0.004), but not cognitive depressive symptoms (p=0.32). NGAL levels were associated with the experienced HF-related functional limitations (6min walk test), rather than the severity of cardiac dysfunction (LVEF). This study indicates that depression in patients with chronic HF is associated with elevated NGAL levels, independent of clinical severity of the underlying disease.


Subject(s)
Depression/blood , Heart Failure/blood , Lipocalins/blood , Proto-Oncogene Proteins/blood , Acute-Phase Proteins , Aged , Chronic Disease , Depression/complications , Female , Heart Failure/complications , Humans , Lipocalin-2 , Male , Middle Aged
11.
Support Care Cancer ; 21(5): 1295-301, 2013 May.
Article in English | MEDLINE | ID: mdl-23203652

ABSTRACT

PURPOSE: The aim of this study was to estimate the minimal clinical important difference (MCID) of the World Health Organization Quality of Life assessment instrument (WHOQOL-100) for women with early-stage breast cancer. If the MCID is known, then the instrument is also useful for individual patients and thus useful in clinical practice. In this study, the MCID is the smallest change in quality of life (QOL) scores considered clinically relevant for patients. METHODS: Data were derived from a prospective study in which 223 women with early-stage breast cancer and 383 women with benign breast problems completed the WHOQOL-100. MCID values were determined by two distribution-based methods (0.5 standard deviation (SD) and 1 standard error of measurement (SEM)) and an anchor-based method. RESULTS: For 0.5 SD, MCID estimates ranged from 0.64 to 0.94, and for 1 SEM, MCID estimates ranged from 0.69 to 1.18. The anchor-based approach resulted in MCID estimates ranging from -1.56 to -0.71 for decline and from 0.51 to 1.27 for improvement. CONCLUSION: A change in score of 1 on the WHOQOL-100 is proposed as the MCID for women with early-stage breast cancer.


Subject(s)
Breast Diseases/psychology , Breast Neoplasms/psychology , Quality of Life , Adult , Aged , Breast Diseases/pathology , Breast Neoplasms/pathology , Case-Control Studies , Female , Humans , Middle Aged , Neoplasm Staging , Prospective Studies , World Health Organization
12.
Haematologica ; 98(3): 479-86, 2013 Mar.
Article in English | MEDLINE | ID: mdl-22929981

ABSTRACT

The course of fatigue and quality of life in survivors of non-Hodgkin's lymphoma is unknown. The aims of this study were, therefore, to assess fatigue and quality of life in patients with non-Hodgkin's lymphoma following primary treatment, compare fatigue and quality of life in these patients with those of an age- and sex matched normative population to assess the severity of concerns and identify associations with fatigue of survivors who remained fatigued. The population-based Eindhoven Cancer Registry was used to select all patients diagnosed with non-Hodgkin's lymphoma from 1999-2009. The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire and the Fatigue Assessment Scale were completed once by 824 survivors of non-Hodgkin's lymphoma (80% response rate); 434 survivors completed these questionnaires again 1 year later. Survivors of non-Hodgkin's lymphoma reported more clinically relevant fatigue up till 10 years post-diagnosis compared to a normative population (P<0.001). Mean fatigue scores remained fairly stable over time (T1: x=28, SD=26; T2: x=30, SD=27, P=0.14): 22-28% of survivors reported deterioration, 19-23% reported improvement and 44-54% reported constant fatigue. Survivors who reported constant fatigue were more often diagnosed with stage IV disease and had more comorbid diseases. They were additionally more often female and divorced. Having comorbidities and being without a partner were also associated with constant fatigue in the normative population. In conclusion, six out of every ten responding non-Hodgkin's lymphoma survivors reported a high level of fatigue up till 10 years after diagnosis. Mean fatigue scores remained stable over time and survivors reporting constant fatigue more often had stage IV disease at diagnosis and comorbidities.


Subject(s)
Fatigue/epidemiology , Fatigue/etiology , Lymphoma, Non-Hodgkin/complications , Survivors , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Netherlands/epidemiology , Odds Ratio , Population Surveillance , Quality of Life , Registries , Risk Factors , Surveys and Questionnaires
13.
BMC Public Health ; 12: 1109, 2012 Dec 23.
Article in English | MEDLINE | ID: mdl-23259455

ABSTRACT

BACKGROUND: Reviews have shown that depression is a risk factor for the development of type 2 diabetes. However, there is limited evidence for general psychological distress to be associated with incident diabetes. The aim of the present study was to test whether persons who report higher levels of psychological distress are at increased risk to develop type 2 diabetes during 18 years follow up, adjusted for confounders. METHODS: A prospective analysis using data from 9,514 participants (41 years, SD=14; 44% men) of the British Household Panel Survey. The General Health Questionnaire 12 item version was used to assess general psychological distress, diabetes was measured by means of self-report. Cox proportional hazards regression models were used to calculate the multivariate-adjusted hazard ratio (HR) of incident diabetes during 18 years follow up, comparing participants with low versus high psychological distress at baseline (1991). RESULTS: A total of 472 participants developed diabetes 18 year follow up. Those with a high level of psychological distress had a 33% higher hazard of developing diabetes (HR=1.33, 95% CI 1.10-1.61), relative to those with a low level of psychological distress, adjusted for age, sex, education level and household income. After further adjustment for differences in level of energy, health status, health problems and activity level, higher psychological distress was no longer associated with incident diabetes (HR=1.10, 95% CI 0.91-1.34). CONCLUSIONS: Higher levels of psychological distress are a risk factor for the development of diabetes during an 18 year follow up period. This association may be potentially mediated by low energy level and impaired health status.


Subject(s)
Diabetes Mellitus, Type 2/epidemiology , Stress, Psychological/epidemiology , Adult , Female , Follow-Up Studies , Health Surveys , Humans , Incidence , Male , Middle Aged , Prospective Studies , Risk Assessment , Risk Factors , United Kingdom/epidemiology
14.
Health Psychol ; 31(6): 745-53, 2012 Nov.
Article in English | MEDLINE | ID: mdl-22545981

ABSTRACT

OBJECTIVE: Twenty-five to 33% of patients with an implantable cardioverter-defibrillator (ICD) experience anxiety and depression, but it is not known whether their symptoms are adequately treated. We investigated (a) whether patients with clinically relevant symptoms of distress received appropriate treatment, and (b) whether patients not treated for their emotional distress reported poorer health status using a prospective study design. METHODS: A consecutive cohort of 448 first-time patients with an ICD (21% women; mean age, 58 ± 12 years) completed the Hospital Anxiety and Depression Scale (HADS) and the Short Form Health Survey 36 (SF-36). Information on psychological treatment was obtained via purpose-designed questions. RESULTS: At baseline, 35.5% of patients were emotionally distressed, of which 70.2% received no psychological treatment. At 12 months postimplantation, 24.3% of all patients had clinically significant levels of distress, of which 58.3% received no treatment. Patients experiencing distress but without treatment reported a significantly poorer health status than patients without distress and treatment (all ps < 0.001) and compared to patients without emotional distress who did receive treatment (ps varying between p = .027 and p < .001 for six subscales). Health status was better on four subscales than for patients with emotional distress and treatment (ps varying between p = .034 and p < .001). CONCLUSIONS: There was a serious gap between the need for psychological treatment and the actual delivery of treatment, with consequences to patients' health status. Detection and adequate treatment of distress in ICD patients remains an important target in this patient group in order to safeguard health status postimplantation. (PsycINFO Database Record (c) 2012 APA, all rights reserved).


Subject(s)
Anxiety/therapy , Defibrillators, Implantable/psychology , Depression/therapy , Healthcare Disparities , Stress, Psychological/etiology , Aged , Female , Health Status , Humans , Male , Middle Aged , Needs Assessment , Prospective Studies
16.
Multivariate Behav Res ; 46(1): 58-89, 2011 Feb 07.
Article in English | MEDLINE | ID: mdl-26771581

ABSTRACT

Exploratory Mokken scale analysis (MSA) is a popular method for identifying scales from larger sets of items. As with any statistical method, in MSA the presence of outliers in the data may result in biased results and wrong conclusions. The forward search algorithm is a robust diagnostic method for outlier detection, which we adapt here to identify outliers in MSA. This adaptation involves choices with respect to the algorithm's objective function, selection of items from samples without outliers, and scalability criteria to be used in the forward search algorithm. The application of the adapted forward search algorithm for MSA is demonstrated using real data. Recommendations are given for its use in practical scale analysis.

SELECTION OF CITATIONS
SEARCH DETAIL
...