ORCID Profile
0000-0001-6287-2128
Current Organisations
University of Groningen
,
Avans University of Applied Sciences
,
University of California, Irvine
,
UC Irvine
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Publisher: Elsevier BV
Date: 06-2020
Publisher: Elsevier BV
Date: 02-2021
Publisher: Springer Science and Business Media LLC
Date: 04-12-2014
DOI: 10.1007/S11136-014-0879-1
Abstract: To evaluate the reliability and validity of the Dutch Shoulder Pain and Disability Index (SPADI-D). The SPADI is recommended and frequently used. However, the validity and reliability of the SPADI-D are unknown. The study population consisted of patients consulting a physical therapist for shoulder pain. We assessed construct validity, using known groups, convergent validity (SDQ) and ergent validity (EQ5D) for which the mean difference or Spearman correlations coefficients were calculated. The factor structure was assessed using principal component factor analysis, and we calculated Cronbach's alpha and the ICC to assess the reliability. A total of 356 patients and a randomly selected group of 74 subjects for the reliability analysis were included. There was a significant difference between extreme groups (a high/low level of pain and work absence resence) in SPADI score. The correlation between the SPADI and the SDQ was 0.69, with the EQ5D mobility-item 0.25 and with the depression-item 0.14. The SPADI consisted of one factor according to principal component factor analysis, which showed high internal consistency (Cronbach's alpha = 0.94 for the total score), and the test-retest reliability was good (ICC = 0.89). The Dutch SPADI is a valid and reliable questionnaire for patients in primary care in assessing functional disability.
Publisher: Oxford University Press (OUP)
Date: 18-08-2016
DOI: 10.2522/PTJ.20150649
Abstract: Health care providers need prognostic factors to distinguish between patients who are likely to recover and those who are not likely to recover. The aim of this study was to: (1) describe the clinical course of recovery and (2) identify prognostic factors of recovery in patients with shoulder pain at the 26-week follow-up. A prospective cohort study was carried out in the Netherlands and included 389 patients who consulted a physical therapist for a new episode of shoulder pain. Participants were followed for 26 weeks. Potential predictors of recovery were selected from the literature and, with the addition of 2 new variables (ie, use of diagnostic ultrasound and working alliance), evaluated in the multivariable regression analysis. Multiple imputation was used to handle missing data, and bootstrap methods were used for internal validation. The recovery rate was 60% for the total population and 65% for the working population after 26 weeks. Short duration of complaints, lower disability scores, having a paid job, better working alliance, and no feelings of anxiety or depression were associated with recovery. In the working population, only duration of complaints and disability remained in the final model. The area under the receiver operating characteristic curve (AUC) for the final model was 0.67 for the total population and 0.63 for the working population. After internal validation, the AUC was corrected to 0.66 and 0.63, respectively. External validation of the prognostic model should be done prior to its use in clinical practice. The results of this study indicate that several factors can predict recovery.
Publisher: Elsevier BV
Date: 04-2019
DOI: 10.1016/J.MSKSP.2019.01.005
Abstract: A systematic overview of the literature and an agreement study. The aim of this study is to explore the inter-professional agreement of diagnostic musculoskeletal ultrasound (DMUS) between physical therapists (PT) and radiologists, using a new classification strategy based upon the therapeutic consequences in patients with shoulder pain. DMUS is frequently used by PTs, although the agreement regarding traditional diagnostic labels between PTs and radiologists is only fair. Nevertheless, DMUS could be useful when used as a stratifying-tool. First, a systematic overview of current evidence was performed to assess which traditional diagnostic labels could be recoded into new treatment related categories (referral to secondary care, corticosteroid injections, physical therapy, watchful waiting). Next, kappa values were calculated for these categories between PTs and radiologists. Only three categories were extracted, as none of the traditional diagnostic labels were classified into the 'corticosteroid injection' category. Overall, we found moderate agreement to stratify patients into treatment related categories and substantial agreement for the category 'referral to secondary care'. Both categories 'watchful waiting' and 'indication for physical therapy' showed moderate agreement between the two professions. Our results indicate that the agreement between radiologists and PTs is moderate to substantial when labelling is based on treatment consequences. DMUS might be able to help the PT to guide treatment, especially for the category 'referral to secondary care' as this showed the highest agreement. However, as this is just an explorative study, more research is needed, to validate and assess the consequences of this stratification classification for clinical care.
Publisher: Journal of Orthopaedic & Sports Physical Therapy (JOSPT)
Date: 04-2017
Abstract: Study Design Clinical measurement study, prospective cohort design. Background Shoulder pain is a common disorder, and treatment is most often focused on a reduction of pain and functional disabilities. Several reviews have encouraged the use of the Shoulder Pain and Disability Index (SPADI) to objectify functional disability. It is important to assess the responsiveness and interpretability of the SPADI in patients seeking physical therapy treatment for their shoulder pain in a primary care setting. Objective To assess the responsiveness and interpretability of the SPADI in patients with shoulder pain visiting a physical therapist in primary care. Methods The target population consisted of patients who consulted a physical therapist for their shoulder pain. The patients received physical therapy treatment and completed the Dutch-language version of the SPADI at baseline and at 26-week follow-up. The interpretability floor and ceiling effects and the minimal important change (MIC) were assessed using the receiver operating characteristic method, and a visual anchor-based MIC distribution method was used to assess several Global Perceived Effect scale (GPE)-based anchors. The measurement error was calculated using the smallest detectable change. For the responsiveness, the area under the receiver operating characteristic curve was used, and correlations with the GPE and the change score of the Shoulder Disability Questionnaire (as this questionnaire measures the same construct) were assessed. Results A total of 356 patients participated at baseline and 237 (67%) returned the SPADI after 26 weeks. The mean score on the SPADI at baseline was 46.7 points (on a 0-100 scale). The SPADI showed no signs of floor and ceiling effects. The smallest detectable change was 19.7 points. The MIC was 20 (43% of baseline value), and therefore a change of 43% or more in an in idual patient was considered to be clinically relevant. The area under the receiver operating characteristic curve (AUC) was 0.81, the Spearman correlation between the SPADI change score and the GPE was 0.53, and the Pearson correlation between the Shoulder Disability Questionnaire and the SPADI change score was 0.71. Conclusion The results of this study confirm the responsiveness of the SPADI, making it a useful instrument to assess functional disability in longitudinal studies however, the measurement error should be taken into account when making decisions in in idual patients. J Orthop Sports Phys Ther 2017 (4):278-286. Epub 3 Feb 2017. doi:10.2519/jospt.2017.7079.
Publisher: Elsevier BV
Date: 10-2015
DOI: 10.1016/J.EJIM.2015.06.018
Abstract: The increasing use of diagnostic imaging has led to high expenditures, unnecessary invasive procedures and/or false-positive diagnoses, without certainty that the patients actually benefit from these imaging procedures. This review explores whether diagnostic imaging leads to better patient-reported outcomes in in iduals with musculoskeletal disorders. Databases were searched from inception to September 2013, together with scrutiny of selected bibliographies. Trials were eligible when: 1) a diagnostic imaging procedure was compared with any control group not getting or not receiving the results of imaging 2) the population included in iduals suffering from musculoskeletal disorders, and 3) if patient-reported outcomes were available. Primary outcome measures were pain and function. Secondary outcome measures were satisfaction and quality of life. Subgroup analysis was done for different musculoskeletal complaints and high technological medical imaging (MRI/CT). Eleven trials were eligible. The effects of diagnostic imaging were only evaluated in patients with low back pain (n=7) and knee complaints (n=4). Overall, there was a moderate level of evidence for no benefit of diagnostic imaging on all outcomes compared with controls. A significant but clinically irrelevant effect was found in favor of no (routine) imaging in low back pain patients in terms of pain severity at short [SMD 0.17 (0.04-0.31)] and long-term follow-up [SMD 0.13 (0.02-0.24)], and for overall improvement [RR 1.15 (1.03-1.28)]. Subgroup analysis did not significantly change these results. These results strengthen the available evidence that routine referral to diagnostic imaging by general practitioners for patients with knee and low back pain yields little to no benefit.
Publisher: Elsevier BV
Date: 12-2017
DOI: 10.1016/J.PHYSIO.2016.11.003
Abstract: Shoulder pain is one of the three main musculoskeletal complaints and more than 50% of the patients have symptoms longer than 6 months. Until now, limited data exist about the content of physiotherapy for patients with shoulder pain in primary care. Describe current physiotherapeutic diagnostic- and therapeutic management, including the use of diagnostic ultrasound, in patients with shoulder pain in primary care. A prospective cohort study in primary care physiotherapy with a 12 week follow-up. Descriptive data from physiotherapists was collected, such as: the diagnostic hypotheses after patient history and physical examination, the use of specific tests and diagnostic ultrasound, the interventions used and possible changes in treatment plan. Subacromial impingement syndrome was the most common hypothesis after patient history (48%) as well as physical examination (39%). Diagnostic ultrasound was used in 31% and of these patients the clinical diagnosis changed in 29%. Various interventions were used in all clinical diagnoses. After 12 weeks 41% of patients still received physiotherapy treatment. Patients with shoulder pain in physiotherapy practice frequently show signs of subacromial impingement syndrome. The interventions used by the physiotherapists were generally in line with the guideline for subacromial impingement syndrome however a small proportion of physiotherapists used massage and tape/bracing techniques. A large proportion of patients were still receiving treatment after 12 weeks when no improvement was observed. If treatment for patients with subacromial impingement shows no benefit patients should be referred back to the general practitioner or orthopedic surgeon. Conclusions from this study might be slightly biased because of the selection of physiotherapists.
Publisher: Informa UK Limited
Date: 09-11-2017
DOI: 10.1080/09593985.2017.1400141
Abstract: Working alliance is the interaction between the patient and therapist. It is a crucial part of the physiotherapeutic process. One instrument to measure working alliance is available in Dutch/Flemish language and validated in psychotherapy setting. This study aims to validate the Working Alliance Inventory Short-Form in a Dutch physiotherapy setting. A prospective cohort study in primary-care physiotherapy. To validate the Dutch/Flemish version of the working alliance inventory short-form (WAV-12) a RASCH analysis was used. Sixty-six physiotherapists enrolled in total 389 patients with an average age of 50 years and a mean duration of shoulder pain of 33 weeks. A total of 274 patients filled in one or more items of the WAV-12. The WAV-12 showes good discriminative abilities and all items contributed to a one-dimensional construct. Due to the selective nature of the missing items, we believed rewording was necessary to make it more suitable to the physiotherapy setting. We performed a Delphi study and revised the WAV-12 into the PAS (Physio Alliance Scale). The validity of the revised version is unknown and is therefore not sufficiently strong to be implemented as a measurement tool. The response rate for three items especially was low and we found ceiling effects in ten items. Although the measurement instrument shows good internal consistency and reliability, we made adjustments to the WAV-12 for Dutch physiotherapy setting.
Publisher: Springer Science and Business Media LLC
Date: 11-02-2013
Publisher: Springer Science and Business Media LLC
Date: 07-09-2017
Publisher: Elsevier BV
Date: 10-2014
DOI: 10.1016/J.MATH.2014.04.018
Abstract: Reliability study. The aim of this study was to evaluate the interrater-reliability of the interpretation of diagnostic ultrasound in patients with shoulder pain between physical therapists and radiologists. Although physical therapists in The Netherlands increasingly use diagnostic ultrasound in clinical practice, there is no evidence available on its reliability. A cohort study included patients with shoulder pain from primary care physiotherapy. Patients followed the usual diagnostic pathway of which diagnostic ultrasound could be a part. Patients that received diagnostic ultrasound also visited a radiologist within one week for a second one. Patients and radiologists were blinded for the diagnostic ultrasound diagnosis of the physical therapists. Agreement was assessed using Cohen's kappa statistics. Subgroup analysis was performed on education and experience. A total of 65 patients were enrolled and 13 physical therapists and 9 radiologists performed diagnostic ultrasound. We found substantial agreement (0.63 K) between physical therapists and radiologists on the assessment of full thickness tears. The overall kappa of all four diagnostic categories was 0.36, indicating fair agreement. The more experienced and highly trained physical therapists showed moderate agreement (0.43 K) compared to only slight agreement (0.17 and 0.09 K) from the less experienced and trained physical therapists with radiologists. The reliability between physical therapists and radiologist on diagnostic ultrasound of shoulder patients in primary care is borderline substantial (Kappa = 0.63) for full thickness tears only. This level of reliability is relatively low when compared with the high reliability between radiologists. More experience and training of physical therapists may increase the reliability of diagnostic ultrasound.
Publisher: Frontiers Media SA
Date: 15-07-2022
DOI: 10.3389/FPSYG.2022.945294
Abstract: Measurement properties of the Working Alliance Inventory (WAI) and its various translations and adaptations for specific target groups have been investigated for over 30 years. No systematic review analyzing studies on measurement properties of the WAI has been conducted to date. COnsensus-based Standards for the selection of health Measurements INstruments (COSMIN) were developed for conducting high-quality systematic reviews on measurement properties in a transparent and standardized way. Aim of this study was to systematically review studies on measurement properties of the WAI, and its adapted versions, within psychotherapy, and other healthcare contexts using COSMIN criteria. PsycINFO, Medline, and EMBASE were searched (1989–2021). In all phases of the review procedure, study selection, data extraction, risk of bias assessment, rating of the quality of measurement properties, and rating of the quality of evidence for measurement properties, disagreement between reviewers was resolved by discussion. Results on validity, internal structure, reliability, construct validity, and responsiveness were analyzed. In total 66 studies were included. In most studies, evidence for measurement properties was according to COSMIN criteria, insufficient, lacking, or conflicting. Content validity was rated insufficient because neither patients nor healthcare professionals were involved in the development and validation process. Hence evidence for content validity of the WAI is unknown. Conflicting evidence was found for structural validity. Evidence for internal consistency could not be established. Limited evidence was found for inter-rater reliability and convergent validity. Conflicting evidence was also found for test-retest reliability and ergent validity. COSMIN criteria exposed persistent problems in validation studies of the WAI. These findings may indicate that measurement properties of the WAI are not up to current standards, or that COSMIN criteria may be less appropriate for assessing measurement properties of the WAI, or it could indicate both. The results of this systematic review suggest that WAI outcomes should be interpreted with caution and further research is needed regarding the content validity and hypotheses development. For the future, the theoretical framework underlying the measurement of the working alliance needs to be studied in psychotherapy and other health contexts, and tested in methodologically sound studies. www.crd.york.ac.uk/PROSPERO/ , identifier CRD42019051428.
Publisher: Elsevier BV
Date: 06-2019
DOI: 10.1016/J.MSKSP.2019.03.003
Abstract: Prospective cohort study including patients with shoulder pain in primary care physiotherapy. There is an increased tendency to use diagnostic ultrasound to aid the diagnostic strategy and target treatment. It is a relatively cheap and accessible imaging technique but the implications for practice and patients are unknown. To study the influence of diagnostic ultrasound (DUS) on diagnostic work-up, treatment modalities and recovery. Participants (n = 389) with a new episode of shoulder pain were assessed at baseline and followed for 6, 12 and 26 weeks. Diagnostic work-up, including the use of DUS, and treatment strategies were reported by the therapists at 3, 6 and 12 weeks. Most patients (41%) were diagnosed with subacromial impingement ain syndrome after physical examination or DUS. DUS was used in 31% of the participants. Tendinopathy was the most found abnormality in this sub-population. Patients who underwent DUS were more frequently treated using exercise therapy. Patients that not had DUS were more likely to receive massage therapy, trigger point therapy or mobilisation techniques. Logistic regression analyses did not show a significant association between DUS and recovery after 26 weeks (0.88, 95%CI:0.50-1.57). Correcting for the therapist as a confounder using a multilevel binary logistic regression did not show a significant cluster effect. Diagnostic US as a work-up component does not seem to influence diagnosis or recovery but does influence the choice of treatment modality. Conclusions are limited to observational data. High quality randomized trials should study the effect of DUS on recovery.
Publisher: The Company of Biologists
Date: 2017
DOI: 10.1242/JEB.153593
Abstract: Toxic Heliconius butterflies have yellow hindwing bars that – unlike their closest relatives – reflect ultraviolet (UV) and long wavelength light, and also fluoresce. The pigment in the yellow scales is 3-hydroxy-DL-kynurenine (3-OHK), found also in the hair and scales of a variety of animals. In other butterflies like pierids with color schemes characterized by independent sources of variation in UV and human-visible yellow/orange, behavioral experiments have generally implicated the UV component as most relevant to mate choice. This has not been addressed in Heliconius butterflies, where variation exists in analogous color components, but moreover where fluorescence due to 3-OHK could also contribute to yellow wing coloration. In addition, the potential cost due to predator visibility is largely unknown for the analogous well-studied pierid butterfly species. In field studies with butterfly paper models we show that both UV and 3-OHK yellow act as signals for H. erato but attack rates by birds do not differ significantly between the models. Furthermore, measurement of the quantum yield and reflectance spectra of 3-OHK indicates that fluorescence does not contribute to the visual signal under broad-spectrum illumination. Our results suggest that the use of 3-OHK pigmentation instead of ancestral yellow was driven by sexual selection rather than predation.
No related grants have been discovered for Dmitry A. Fishman.