Test-retest reliability and smallest detectable change of the Bristol Impact of Hypermobility (BIoH) questionnaire

Assessment of a novel Ehlers-Danlos syndromes disability index

Background

The Ehlers-Danlos syndromes (EDS) are a group of inherited connective tissue disorders characterized by disruptions in collagen synthesis and processing. These disorders lead to various symptoms, including hypermobility, musculoskeletal conditions, and chronic pain that can significantly limit patients' daily living. In the absence of a curative treatment, an EDS specific disability index that tracks changes in patient-reported outcomes can facilitate the investigation of new treatment options and enhance the quality of life for EDS patients.

Methods

An EDS-specific disability index was created using survey data and input from clinicians. A total of 222 EDS patients in a multidisciplinary clinical program completed the index during their initial visit. Exploratory and confirmatory factor analyses were conducted to determine the index's factor solution and assess its goodness-of-fit. Paired t-tests were performed with follow-up visit data collected over the course of one year.

Results

The exploratory and confirmatory factor analyses indicated a two-factor solution, accounting for 42.40% of the variance. The index demonstrated adequate fit to the data, supported by Tucker and Lewis's index (0.85) and root mean square error of approximation (0.1). Data from follow-up visits showed significant improvement in three symptom related variables and one function related variable in addition to the total score and the symptom subscale score when compared to the initial visit.

Conclusion

The development of an EDS-specific disability index is a crucial step in creating a clinical tool that enables healthcare professionals to gain a deeper understanding of the impact EDS has on patients' lives and potentially identify new therapeutic interventions.

Arabic translation, cultural adaptation, and validation of the Bristol Impact of Hypermobility questionnaire

BACKGROUND

The Bristol Impact of Hypermobility questionnaire (BIoH) is the first condition-specific patient reported outcome measure for people with hypermobility-related conditions. The BIoH original version is in English, which limits its use for patients who speak other languages. The study aimed to translate and culturally adapt the BIoH into Arabic and determine its concurrent validity, reliability, internal consistency and smallest detectable change.

METHODS

Forward-backward translation and cross-sectional designs were used. The Ethics Committee of Kuwait Ministry of Health approved the study. Spearman correlation coefficient, intraclass correlation coefficient (ICC), and Cronbach's α were used for statistical analysis. Patients with hypermobility spectrum disorders (HSD) were included, diagnosed using the 2017 classification framework.

RESULTS

55 HSD patients were included, aged 26.0 (18.0) years old; median (IQR), and 85.5% were women. The BIoH showed very good concurrent validity when correlated with the SF-12 total and physical component scores; r = -0.743 and - 0.740, respectively (p < 0.05). Good correlation was identified between the BIoH and the SF-12 mental component score; r = -0.496 (p < 0.05). The BIoH demonstrated excellent test-retest reliability; ICC = 0.934 (0.749-0.983 95% CI) (p < 0.05), and high internal consistency (Cronbach's α = 0.933). The smallest detectable change was 30.90 points, representing 19.8% of the mean baseline score.

CONCLUSIONS

The study successfully translated the BIoH into Arabic and demonstrated high psychometric properties. The translated score can help Arabic patients with HSD in their clinical evaluation process. Future research needs to determine the responsiveness of the Arabic version and translate the BIoH to other languages.

Masterclass: Hypermobility and hypermobility related disorders

INTRODUCTION

Hypermobile joints display a range of movement that is considered excessive, taking into consideration the age, gender and ethnic background of the individual. Joint hypermobility may present in a single joint, a few joints or in multiple joints and may be congenital or acquired with training, disease or injury. Hypermobile joints may be asymptomatic or may be associated with pain, fatigue, multisystemic complaints and significant disability. Furthermore, joint hypermobility may be a sign of an underlying hereditary disorder of connective tissue.

PURPOSE

This masterclass aims to provides a state-of-the-art review of the aetiology, epidemiology, clinical presentation, assessment and management of joint hypermobility and hypermobility related disorders using an evidence based and biopsychosocial approach. The new framework for classifying the spectrum of joint hypermobility disorders along with new diagnostic criteria for the hypermobile Ehlers Danlos syndrome, published by an international consortium of clinical experts and researchers in 2017 is integrated into the paper.

IMPLICATIONS FOR PRACTICE

People with joint hypermobility related disorders present to healthcare professionals with a wide range of symptoms which extend beyond the musculoskeletal system. Early recognition and treatment are key to effective management. A biopsychosocial and patient empowerment approach to functional restoration is recommended.

Advances in assessment of hypermobility-related disorders

There has been increasing recognition in recent years of the prevalence and impact of symptoms which extend beyond the musculoskeletal system on the lives of people with hypermobility-related disorders. This has led researchers to develop more comprehensive assessment tools to help direct and monitor treatment. This article presents some of the latest assessment and diagnostic developments and their implications for practice from a physical therapy perspective.

Recognizing and Effectively Managing Hypermobility-Related Conditions

Hypermobility spectrum disorder (HSD) and hypermobile Ehlers-Danlos syndrome (hEDS) can cause widespread or chronic pain, fatigue, and proprioceptive and coordination deficits resulting in functional restrictions. These conditions are common and often unrecognized, and patients are likely to present in physical therapy for musculoskeletal injuries, pain, or coordination deficits. Although physical therapy is considered central to managing these conditions, many patients report pain and iatrogenic injuries due to inappropriate interventions. The diagnostic classification for these conditions was revised in 2017 to supersede previous diagnostic categories of Joint Hypermobility Syndrome and Ehlers-Danlos Syndrome-hypermobility type/type III. It is now known that these conditions affect multiple body systems and not just joints and that patients require a holistic approach. This Perspective article will describe the 2017 diagnostic classification system, clinical presentation, examination, evaluation, and management of patients with HSD/hEDS. Both adult and pediatric cases are presented to illustrate the patient management concepts discussed. This knowledge can lead to more effective management of this patient population.

Standard error of measurement and smallest detectable change of the Sarcopenia Quality of Life (SarQoL) questionnaire: An analysis of subjects from 9 validation studies

Objectives

The Sarcopenia Quality of Life (SarQoL) questionnaire, a sarcopenia-specific patient-reported outcome measure, evaluates quality of life with 55 items. It produces 7 domain scores and 1 overall quality of life score, all between 0 and 100 points. This study aims to contribute to the interpretation of the SarQoL scores by calculating the standard error of measurement (SEM) and smallest detectable change (SDC) in a sample of subjects from 9 studies.

Methods

Subjects from 9 studies (conducted in Belgium, Brazil, Czech Republic, England, Greece, Lithuania, Poland and Spain) were included. The SEM, a measure of the error in the scores that is not due to true changes, was calculated by dividing the standard deviation of the difference between test and retest scores (SDdiff) by √2. The SDC, defined as change beyond measurement error, was calculated by multiplying SDdiff by 1.96. Bland-Altman plots were assessed for the presence of systematic errors.

Results

A total of 278 sarcopenic subjects, aged 77.67 ± 7.64 years and 61.5% women, were included. The SEM for the overall SarQoL score ranged from 0.18 to 4.20 points for the individual studies, and was 2.65 points when all subjects were analyzed together. The SDC for the overall score ranged from 0.49 to 11.65 points for the individual studies, and was 7.35 points for all subjects. The Bland-Altman plots revealed no systematic errors in the questionnaire.

Conclusion

This study shows that, for individual subjects, a change in overall quality of life of at least 7.35 points (on a scale from 0 to 100) would have to be observed to confirm that a true change, beyond measurement error, has occurred. It also demonstrated that the SarQoL questionnaire is a precise instrument, with the observed scores within less than 3 points of the theoretical “true score”.

The views of people with joint hypermobility syndrome on its impact, management and the use of patient-reported outcome measures. A thematic analysis of open-ended questionnaire responses

INTRODUCTION

Joint hypermobility syndrome (JHS) has been reported to have widespread impacts on people with the condition. However, our understanding of those impacts is still developing and we do not know if they can be captured effectively using patient-reported outcome measures. The aim of the present study was to explore written qualitative comments from previously administered questionnaires, to identify the impacts of JHS and any issues related to using patient-reported outcome measures to assess those impacts.

METHODS

Previous research administered a draft condition-specific questionnaire and Short Form-36 questionnaire to adult members of a patient organization in the UK, incorporating an open text box for further comments. Those comments were transcribed, anonymized and analysed using thematic analysis. A coding list, themes and subthemes were developed through double coding, parallel independent analysis and consensus.

RESULTS

A total of 393 of 614 eligible questionnaires (64%) contained qualitative comments and were analysed (mean respondent age 41 years, mean Bristol Impact of Hypermobility questionnaire score 228/360, 95% women). Three main themes were identified: (a) "Impacts of living with JHS"; (b) "Management strategies for JHS"; and (c) "Measurement and research into JHS". Participants highlighted a range of impacts of JHS, incorporating physical, social and psychological domains. Respondents described difficult journeys to diagnosis, and feeling unsupported and misunderstood by their peers and healthcare professionals. They detailed helpful strategies for managing their condition and provided useful comments on using questionnaires to assess JHS.

CONCLUSIONS

The study yielded valuable findings that can be used to directly inform the assessment and management of JHS.

A qualitative evaluation of the appropriateness, validity, acceptability, feasibility and interpretability of the Bristol Impact of Hypermobility (BIoH) questionnaire

BACKGROUND

The Bristol Impact of Hypermobility (BIoH) questionnaire is a condition-specific patient-reported outcome measure developed for adults with Joint Hypermobility Syndrome (JHS). It has previously demonstrated strong concurrent validity with the Short-Form 36 health questionnaire and excellent test-retest reliability.

OBJECTIVES

This study aimed to evaluate its appropriateness, validity, acceptability, feasibility and interpretability.

DESIGN

A qualitative evaluation using semi-structured telephone interviews, incorporating a 'think aloud' exercise and additional prompts.

METHOD

Adults with JHS (n = 11) were recruited through a patient organisation and physiotherapists with a professional interest in JHS (n = 9) were recruited through the same organisation and an online professional network. Interviews were transcribed and data synthesised using a framework matrix.

FINDINGS

Patients and physiotherapists commented positively on the appropriateness, validity, acceptability and feasibility of the BIoH questionnaire. Physiotherapists assessed the interpretability of the questionnaire and commented that, whilst further information might be captured, the value of that information might be limited. The questionnaire was considered comprehensive with only a very limited number of potential missing areas related to use of hand-held technology, hair washing/drying and intimacy. Interestingly, keyboard use and hair washing were excluded during initial questionnaire development as they were rated as relatively unimportant. Intimacy was not considered a comfortable addition for all participants.

CONCLUSIONS

Patients and physiotherapists regarded the BIoH questionnaire as a welcome addition to the toolkit available to assess those with JHS. It was broadly accepted as reflecting the experience of people with JHS in sufficient detail to support management.