Validation of the WHOQOL-BREF and Shorter Versions Using Rasch Analysis in Traumatic Brain Injury and Orthopedic Populations

Modern psychometric evaluation of Thai WHOQOL-BREF and its shorter versions in patients undergoing warfarin in Thailand: Rasch analysis

Rasch analysis was employed to investigate the psychometric properties of the World Health Organization Quality of Life-BREF (WHOQOL-BREF) and its shorter versions (EUROHIS-QOL-8 and WHOQOL-5) within the context of patients undergoing warfarin in Thailand. A group of 260 patients were recruited from three public hospitals and tasked with completing the WHOQOL-BREF questionnaire. Rasch analysis showed that the WHOQOL-BREF, structured into four-domain subtests, achieved a commendable fit to the Rasch model (χ2[16] = 12.26, p = 0.73), met the criterion of unidimensionality (7.31% significant t-tests; lower bound confidence interval, 4.66), and demonstrated satisfactory reliability (PSI = 0.87). The adoption of a subtest approach facilitated an acceptable fit to the Rasch model for each domain of the WHOQOL-BREF, except for the social domain. However, the presence of local dependency of the three-item social domain was detected, so the reliability was not reported. The WHOQOL-5 proved to be unidimensional, fitting the Rasch model acceptably, and had satisfactory reliability. Conversely, the EUROHIS-QOL-8 presented local dependency; thus, reliability was not reported. Consequently, the WHOQOL-BREF in its four-domain subtests is recommended for pre- and post-HRQoL measurements, whereas the WHOQOL-5 can effectively measure HRQoL levels in between-group analyses.

Trauma-informed care beliefs scale-comprehensive for child welfare carers using Rasch analysis

BACKGROUND

The literature on trauma-informed care practices (TIC) indicates that this framework is beneficial for young people, carers, and staff. However, a significant gap in the literature and practice is the absence of psychometrically sound scales to measure carer adherence to TIC principles. Emerging evidence suggests that TIC practices shift carer attitudes and beliefs, which mediate positive outcomes for both carers and young people.

OBJECTIVE

To develop a theoretically comprehensive and psychometrically sound measure of carer TIC beliefs using Rasch methodology.

PARTICIPANTS AND SETTING

Active carers (N = 719, M = 43 years, SD = 10.7 years) from online support groups in Australia, Canada, the United States of America, the United Kingdom, and the Republic of Ireland completed the questionnaire online.

METHODS

Based on previous research (e.g., limitations of the Trauma-Informed Belief Scale-Brief [TIBS-B]; Beehag, Dryer, et al., 2023a) and a scoping review of the TIC literature (Beehag, 2023), 61 candidate items were created that covered the three main characteristics of carer-related TIC theory (i.e., beliefs on TIC strategies to manage trauma symptoms, beliefs on the impact of adverse childhood experiences (ACE), and beliefs on the importance of self-care/reflection). The resulting data was subjected to Rasch analyses.

RESULTS

Following analyses and minor modifications, a 35-item version of the questionnaire was confirmed, which fitted the Rasch model and demonstrated unidimensionality, reasonable targeting, and sound internal consistency reliability (Person Separation Index = 0.81).

CONCLUSIONS

The TIBS-C is a psychometrically sound measure of child welfare carer TIC beliefs. Future studies are needed to provide further evidence of its validity (e.g., predictive validity), reliability (e.g., test-retest reliability) and clinical utility.

The WHOQOL-BREF instrument: Psychometric evaluation of the Greek version in patients with advanced cancer and pain and associations with psychological distress

OBJECTIVES

Assessment of the psychometric characteristics of the Greek version of the brief World Health Organization Quality of Life Instrument (WHOQOL-BREF) in patients with advanced cancer and pain, and exploration of the association between psychological distress and quality of life (QoL).

METHOD

The sample consisted of 145 patients with advanced cancer and pain who completed the WHOQOL-BREF, the Symptom Checklist-90 (SCL-90), and the Pain Visual Analogue Scale (VAS). In analysis, the following methods were used: Cronbach's alpha, Item Response Theory (IRT), polychoric, Pearson and polyserial correlation, t-test, and Linear regression.

RESULTS

The internal consistency was high for all domains of the WHOQOL-BREF (Cronbach's α ≥ 0.731). Similarly, with the exception of three items, the WHOQOL-BREF items has large discrimination parameters suggesting that they have a high ability in differentiating subjects. On SCL-90, the three dimensions with the highest scores were Depression, Somatization, and Anxiety. The overall score for psychological distress, the Global Severity Index (GSI), showed significant negative association with all the WHOQOL-BREF factor scores (Physical Health: B = -1.488, p < 0.001, Psychological Health: B = -1.688, p < 0.001, Social Relationships: B = -0.910, p < 0.001, Environment: B = -1.064, p < 0.001). Male gender was associated with lower scores for Social Relationships (B = -0.358, p = 0.007) and Environment (B = -0.293, p = 0.026).

SIGNIFICANCE OF RESULTS

The Greek version of the WHOQOL-BREF showed good psychometric properties in patients with advanced cancer and can be used as a reliable instrument in clinical practice. The level of psychological distress can be considered a determinant of QoL in patients with advanced cancer and pain, independently of pain intensity or other clinical characteristics. In cancer, the disease process can activate multiple physiological and psychological mechanisms that lead to a wide range of symptoms of psychological distress. To improve their QoL, psychological intervention focused on the identification and alleviation of psychological distress in patients with advanced cancer, and help in finding meaning in their experience, should be provided.

The potential of infra-low frequency neurofeedback training in peak performance: The first double-blinded placebo-controlled longitudinal study in healthy adults

Infra-low frequency neurofeedback training (ILF-NFT) has shown promise in addressing cognitive and affective distress symptoms across a range of psychiatric disorders. This study tested ILF-NFT's effects in a double-blinded, placebo-controlled longitudinal context in healthy psychology students. Across five weeks, forty-two healthy psychology students (aged 18-35) were randomly allocated into two groups, receiving ten sessions of 30 minutes of active and sham ILF-NFT. Dependent variables were measured before, following, and two months after the intervention and were comprised of: heartrate variability assessments as a measure of stress resilience; digit span, n-back, trail making and go-no-go task measures of executive functioning performance; and SCL-90-R, WHOQOL-Bref, and peak performance measures of subjective self-report. Statistical analysis was performed using an ANCOVA and compared across groups correcting for baseline differences and multiple comparisons. ANCOVA analyses revealed no significant differences across active and placebo groups in any dependent variables, when correcting for multiple comparisons. Thus, the remaining analyses focused on questionnaire correlations. Here, significant correlations were observed between the novel peak performance questionnaire with the SCL-90-R and WHOQOL-Bref, confirming its construct and retest validity. Despite several methodological limitations, including a potential type-2 error, this study highlights limited effects of ILF-NFT in healthy volunteers. Future research should thus focus on clinically driven experimental designs to explore ILF-NFT's potential in psychiatric contexts. Further research utilization of the novel peak performance questionnaire is recommended for measures of peak performance.

Validation of a Tamil Version of the Five Facet Mindfulness Questionnaire Using Rasch Analysis

Background

Various assessment tools that explore and assess mindfulness are available. Keeping in view both the origin of and the literature surrounding mindfulness assessment tools, this study aimed to evaluate the workability of one widely researched tool, the Five Facet Mindfulness Questionnaire (FFMQ), for establishing cross-cultural generalizability and utility in the Indian context.

Methods

We recruited 303 adults over 18 with proficiency in the Tamil language and no history of significant neurological trauma and/or psychiatric history. They completed a version of the 39-item FFMQ, which we had translated into Tamil (FFMQ-T). The psychometric properties of this scale were tested using the Partial-Credit model of Rasch analysis.

Results

Iterative Rasch analysis could not resolve consistent misfit of the Observe facet items. Using a subtest approach, a higher-order fit of the FFMQ-T could be achieved after the deletion of additional items from each of the remaining four facets. The resulting final model for the FFMQ-T questionnaire was a four-factor solution with 22 items.

Conclusions

This study concluded the usability of the new 22-item FFMQ-T. These results are not dissimilar to the other versions in similar populations, such as the Hindi version of the FFMQ. The ordinal-to-interval conversion tables provided here ensure that the FFMQ-T can be used with enhanced precision and parametric statistics.

Psychometric evaluation of the WHOQOL-BREF and its shorter versions for general Thai population: confirmatory factor analysis and Rasch analysis

PURPOSE

Rasch analysis was employed to validate the World Health Organization Quality of Life-BREF (WHOQOL-BREF) and its existing shorter versions in the general Thai population.

METHODS

1200 respondents were randomly selected to complete the questionnaire. Confirmatory factor analysis (CFA) was employed to test the structure of the WHOQOL-BREF and its shorter versions with the random sub-sample of 900 respondents, while Rasch analysis was performed with a random sub-sample of 300 respondents.

RESULTS

The CFA confirmed the factor structure of WHOQOL-BREF and its shorter versions. The Rasch analysis revealed that the WHOQOL-BREF, when a four-domain structure was tested using a subtest approach, achieved acceptable model fit to the Rasch model and met the expectations of unidimensionality with high reliability (PSI = 0.87). Individual domain models were also unidimensional, but reliability of the 3-item social domain was inadequate. While the 8-item EUROHIS-QOL-8 and 5-item WHOQOL-5 achieved an overall acceptable fit and met the expectations of unidimensionality, the reliability of the WHOQOL-5 was below the acceptable threshold (PSI = 0.66). Reliability of the EUROHIS-QOL-8 was satisfactory (PSI = 0.79).

CONCLUSIONS

The WHOQOL-BREF is a valid instrument for use in the Thai general population, both as a total score as well as individual subscales. Rasch analysis also supports the use of EUROHIS-QOL-8, but the WHOQOL-5 lacks good reliability. While the reliability of the EUROHIS-QOL-8 is sufficiently high for between-group analysis, the Thai WHOQOL-BREF total score can also be used for within-participant analyses. Rasch investigation with a more varied health conditions of general Thai samples or patient groups is encouraged for future studies.

Quality of life and psychological health after mild traumatic brain injury in older people: Three- and six-month follow up

OBJECTIVES

Examine quality of life (QoL) and psychological health after mild traumatic brain injury (mTBI) in older people (65+ years) at 3- and 6-month follow-up and explore which injury factors predicted QoL.

METHODS

mTBI patients were compared to trauma comparison (TC) and community comparison (CC) groups. QoL and psychological health were measured at both timepoints. After accounting for 3-month psychological health, injury severity, neuroimaging, and 3-month neuropsychological performance were assessed as predictors of 6-month QoL.

RESULTS

Overall 3-month QoL was lower for mTBI (Cohen's d = 0.938) and TC (Cohen's d = 0.485) groups compared to CCs, but by 6 months only mTBI patients continued to report poorer overall QoL (Cohen's d = 0.577) and physical QoL (Cohen's d = 0.656). Despite group differences, QoL for most (~92%) was within normative limits. 3-month psychological health predicted QoL 6-months postinjury (β = -.377, 95% CI -.614, -.140) but other proposed risk factors (GCS <15, neuroimaging, 3-month neuropsychological performance) did not uniquely predict QoL.

CONCLUSIONS

Older adults following mTBI reported lower QoL up to 6-months postinjury compared to non-injured peers, indicating that mTBI patients were particularly susceptible to ongoing differences in QoL 6-months postinjury.

What do Members of Parliament in India Think of Robots? Validation of the Frankenstein Syndrome Questionnaire and Comparison with Other Population Groups

India is the second largest country in the world in terms of population and thus a considerable market for potential future robot applications as well as a location for manufacturing and production. While work has started to explore attitudes towards robots, very little is known about the perceptions of robots in India, particularly of political leaders who have the ability to effect rapid change. The present study administered the 30-item Frankenstein Syndrome Questionnaire to 31 Lok Sabha (Lower House) and Rajya Sabah (Upper House) members of the Indian Parliament (MPs) as well as doctors (n = 94), medical students (n = 493), and engineering students (n = 1104) for comparative purposes. Because no information had been available about the psychometric properties of the scale for use in India, a prior Rasch analysis explored the suitability of the commonly used five-factor model. The five subscales did not possess sufficient reliability, and a more psychometrically robust 26-item two-factor model (positive and negative attitudes) was utilized instead. The results revealed a higher degree of positive attitudes in MPs and doctors as compared to the two student groups. Negative attitudes, on the other hand, were strongest in doctors, followed by students. MPs had significantly less negative views compared to all other comparison groups. This study provides valuable insights into attitudes towards robots in India. In general, MPs appear to have more favourable views than comparison groups in India. A slightly shorter and more parsimonious version of the Frankenstein Syndrome Questionnaire has now also been proposed, with improved psychometric properties.

Effects of a food preparation program on dietary well-being for stroke patients with dysphagia: A pilot study

BACKGROUND

Dysphagia is one of the common issues observed in patients with stroke. Stroke patients with dysphagia have to eat blended food or similar types of food for each meal, resulting in dietary dissatisfaction. The purpose of this study was to investigate the effects of a food preparation program on dietary well-being for stroke patients with dysphagia.

METHODS

This study was a pilot randomized clinical trial. Twenty-two patients were assigned randomly into the food preparation group (n = 11) and control group (n = 11). The food preparation group received oral motor exercises, recognition of food texture and thickener, and hands-on food preparation for 6 weeks. Outcome measures included the Dietary Well-Being Scale, brief version of the World Health Organization Quality of life, Swallowing Quality of Life Questionnaire, and Mini Nutritional Assessment.

RESULTS

Patients in the food preparation group showed significant improvements in the Dietary Well-Being Scale, psychological and environmental domains of the brief version of the World Health Organization Quality of life (P = .001-.024) with small to large effect sizes (success rate difference = 0.23-0.46). The Swallowing Quality of Life Questionnaire and Mini Nutritional Assessment displayed non-significant differences (P = .053-.092) and revealed small to moderate effect sizes (success rate difference = 0.23-0.32).

CONCLUSIONS

The food preparation program showed a positive impact on dietary well-being and a potential improvement in the health-related quality of life, quality of life related to the process of swallowing, and nutritional status for stroke patients with dysphagia. We recommend that stroke patients with dysphagia receive adequate knowledge and hands-on food preparation training to increase their dietary intake and well-being.

Perceived quality of life among oral health therapy and dental students: A cross-cultural comparison

OBJECTIVES

This cross-sectional study examined the perceived quality of life (QOL) of Oral Health Therapy (OHT) students and compared the domain differences between Dental students, gender, and year-of-study.

METHODS

OHT students from a local polytechnic were invited to participate (IRB no. (SHS-2019-001). Perceived QOL was assessed with the multidimensional World Health Organization QOL (WHOQOL)-BREF instrument. Demographic information and WHOQOL-BREF responses were collected electronically. Raw scores were converted to transformed scores and related to data of Dental students from other countries. Statistical analyses were performed with a T-test, one-way ANOVA/posthoc Tukey's test, and Pearson's correlation (p < 0.05).

RESULTS

Of the total cohort of 66 students, 65 consented to participation (98.5% response rate). The study sample (mean age 19.2 ± 2.9 years) comprised of 83.1% females (54/65). Mean domain scores were as follows: Physical health - 54.90 ± 9.78; psychological - 50.98 ± 17.36; social relationships - 60.69 ± 16.47; and environment - 66.80 ± 13.66. The psychological domain was rated the lowest as with most other studies on Dental students. Mean scores for the overall perception of QOL and "satisfaction with health" (SWH) were 3.46 ± 0.83 and 3.35 ± 0.89 respectively. No significant difference in the domain and overall QOL/SWH scores were observed between genders. Psychological and environmental domains scores were significantly different between the first and third-year students (p ≤ 0.02). Correlations coefficients between the QOL domains ranged from r_s  = 0.18-0.66.

CONCLUSION

Aside from the USA and Saudi Arabia, the perceived QOL of Asian OHT students was generally comparable to those of Dental students from other countries. Overall perceived QOL and satisfaction with health were moderately favourable.

Enhancing the multi-dimensional assessment of quality of life: introducing the WHOQOL-Combi

INTRODUCTION

We revisited the global concept of subjective quality of life (QoL) as assessed by the WHOQOL-BREF to investigate whether it could be elaborated into a conceptually more comprehensive instrument with good psychometric properties. Responding to a growing need for shorter QoL measures with broader social, spiritual and environmental contents, facets from WHOQOL international modules were examined for potential integration into the new WHOQOL-Combi.

METHOD

Adults over 65 years, diagnosed with one or more chronic diseases (n = 2833), completed 41 WHOQOL items during the CLASSIC survey; each item represented a WHOQOL facet. This pool of specific QoL facets contained 24 from the WHOQOL-BREF (excluding general items), and 17 from recent international WHOQOL short-form modules, selected for their generic properties. Rasch modelling reduced the final item pool when assessing the WHOQOL-Combi's conceptual structure. Comparisons are made with the WHOQOL-BREF.

RESULTS

Modelling confirmed the tenability of a 36-item solution scored as a five-domain profile, comprised of 24 WHOQOL-BREF facets and 12 new facets from modules. Social and psychological domains were strengthened by three facets, spiritual QoL by five, and physical QoL by one. The WHOQOL-Combi showed sound model fit, excellent internal consistency (α = .95), and scores discriminated between socio-demographic categories. Concurrent validity with the EQ-5D-5L was confirmed for physical and psychological domains. Performance was similar to the WHOQOL-BREF.

CONCLUSION

The WHOQOL-Combi offers a contemporary, comprehensive, integrated, multi-dimensional subjective QoL instrument with enhanced evaluations of social, spiritual, psychological and physical QoL. Acceptable to older people, future research should evaluate younger age groups and other cultures.

Is the Rivermead Post-Concussion Symptoms Questionnaire a Reliable and Valid Measure to Assess Long-Term Symptoms in Traumatic Brain Injury and Orthopedic Injury Patients? A Novel Investigation Using Rasch Analysis

Persistent post-concussion syndrome (PCS) symptoms are known to last years after traumatic brain injury (TBI), and similar symptoms are increasingly being documented among those who have not experienced a TBI. There remains however, a dearth of empirical evidence on the structural composition of symptoms beyond the post-acute symptom phase after TBI, and little is known about the potential use of PCS symptom scales to measure PCS-like symptoms in non-TBI individuals. Our objective was therefore to examine the psychometric performance and dimensionality of the Rivermead Post-Concussion Symptoms Questionnaire (RPQ) as a measure of long-term PCS symptoms among a TBI and non-TBI sample. A case-control sample of 223 patients with injury, consisting of age- and sex-matched TBI participants (n = 109) and orthopedic participants (n = 114) were recruited from a regional trauma registry in New Zealand (NZ), and assessed at mean 2.5 years post-injury. Results from the Rasch analysis showed that the RPQ achieved fit to the Rasch model, demonstrating very good reliability (Person Separation Index [PSI] = 0.87), thereby indicating that the measure can be used reliably for individual and group assessment of symptoms among both TBI and orthopedic patients. In this study we demonstrated evidence of a unidimensional construct of PCS symptoms in both groups, which helps alleviate previous uncertainty about factor structure, and permits the calculation of a total RPQ score. Conversion of ordinal to interval total scores presented within are recommended for clinicians and researchers, to improve instrument precision, and to facilitate the interpretation of change scores and use of parametric methods in data analysis.