Three out of four working-age patients have fulfilled expectations towards paid employment six months after total hip or knee arthroplasty: a multicentre cohort study.

To investigate factors associated with fulfilment of expectations towards paid employment after total hip/knee arthroplasty (THA/TKA). Cohort study including preoperatively employed patients aged 18-64 scheduled for THA/TKA. Expectations were collected preoperatively, and 6 and 12 months postoperatively with the paid employment item of the Hospital-for-Special-Surgery Expectations Surveys (back-to-normal = 1; large improvement = 2; moderate improvement = 3; slight improvement = 4; not applicable = 5). Patients scoring not applicable were excluded. Fulfilment was calculated by subtracting preoperative from postoperative scores (< 0: unfulfilled; ≥ 0: fulfilled). Multivariable logistic regression analyses were conducted separately for THA/TKA at 6 and 12 months postoperatively. Six months postoperatively, 75% of THA patients (n = 237/n = 316) and 72% of TKA patients (n = 211/n = 294) had fulfilled expectations. Older age (TKA:OR 1.08, 95% CI 1.01-1.15) and better postoperative physical functioning (THA:OR 1.10, 95% CI 1.06-1.14; TKA:OR 1.03, 95% CI 1.01-1.06) increased the likelihood of fulfilment. Physical work tasks (THA:OR 0.12, 95% CI 0.03-0.44), preoperative sick leave (TKA:OR 0.33, 95% CI 0.17-0.65), and difficulties at work (THA:OR 0.10, 95% CI 0.03-0.35; TKA:OR 0.41, 95% CI 0.17-0.98) decreased the likelihood of fulfilment. Twelve months postoperatively similar risk factors were found. Three out of four working-age THA/TKA patients had fulfilled expectations towards paid employment at 6 months postoperatively. Preoperative factors associated with fulfilment were older age, mental work tasks, no sick leave, postoperative factors were better physical functioning, and no perceived difficulties at work.

Quality of reporting and nature of harms in clinical trials on supervised exercise in patients with rheumatoid arthritis or axial spondyloarthritis.

To describe the quality of reporting and the nature of reported harms in clinical studies on the effectiveness of supervised exercises in patients with rheumatoid arthritis (RA) or axial spondyloarthritis (axSpA). We performed a systematic review, searching eight databases up to February 2023. Randomized controlled trials (RCTs) evaluating supervised exercises in adults with RA or axSpA were considered eligible. Data on harms were extracted according to the CONSORT Harms 2022 Checklist. Among others, it was recorded if harms were prespecified or non-prespecified. Moreover, the nature of reported harms was listed. Forty RCTs were included for RA and 25 for axSpA, of which 29 (73%) and 13 (52%) reported information on harms. In 13 (33%) RCTs in RA and four (16%) in axSpA, the collection of harms outcomes was described in the methods section. Prespecified outcomes were reported by eight (RA) and two (axSpA) RCTs. Non-specified harms outcomes were reported by six (RA) and four (axSpA) RCTs. Prespecified harms outcomes included measures of pain, disease activity, inflammation, and structural joint changes. The nature of non-prespecified harms outcomes varied largely, with pain being most common. A considerable proportion of trials on supervised exercise in RA or axSpA does not or inadequately report harms outcomes. Pain was the most commonly reported prespecified or non-specified harm. For a considerate interpretation of the balance between benefits and harms of supervised exercise in RA or axSpA, use of the CONSORT Harms 2022 Checklist for the design, conduct and reporting of trials is advocated.

Sex differences in perceived expectations of the outcome of total hip and knee arthroplasties and their fulfillment: an observational cohort study.

The influence of sex on preoperative expectations and their fulfillment following total hip and knee arthroplasty (THA/TKA) remains unexplored. We investigated differences between men and women in perceived preoperative expectations on the outcome of THA/TKA and their fulfillment 1 year postoperatively. We performed a cohort study. Expectations were collected preoperatively and 1 year postoperatively using the Hospital for Special Surgery Hip/Knee Replacement Expectations Surveys (HSS-HRES/KRES; not applicable = 0, applicable: back to normal = 1, much = 2/moderate = 3/slight improvement = 4). Fulfillment of expectations was calculated by subtracting preoperative from postoperative scores (score < 0:unfulfilled; score ≥ 0:fulfilled). We included patients with "applicable" expectations. Chi-square and ordinal regression were used to compare expectations and fulfillment regarding sex. 2333 THA (62% women) and 2398 TKA (65% women) patients were included. 77% of THA and 76% of TKA patients completed the HSS-HRES/HSS-KRES both preoperatively and 1 year postoperatively. Men more often perceived items as "applicable", with differences in 9/20 (HSS-HRES) and 9/19 (HSS-KRES) preoperative items and, respectively, 12/20 (HSS-HRES) and 10/19 (HSS-KRES) postoperative items. The largest differences (> 10%) were found in sexual activity and working ability. 16/20 (HSS-HRES) and 14/19 (HSS-KRES) items showed an increased probability of having higher preoperative expectations of ≥ 10%, in favor of men. In all items, 60% of the respondents indicated that their expectation was fulfilled. Differences were observed in 16/20 (HSS-HRES) and 6/19 (HSS-KRES) items in favor of men. Sex differences were present in expectations and fulfillment, with higher applicability of items, preoperative expectations and fulfillment in men, especially on items related to functional activities.Trial registration: Trial-ID NTR3348.

Measurement properties and interpretability of the PROMIS item banks in stroke patients: a systematic review.

PURPOSE: Both the International Consortium for Health Outcomes Measurement and the National Institutes of Health recommend the use of Patient-Reported Outcomes Measurement Information System (PROMIS®) measures in clinical care and research for stroke patients. This study aimed to systematically review the literature on the measurement properties and interpretability of PROMIS measures in stroke patients. METHODS: Nine databases were searched from January 1st, 2007 till April 12th, 2021 for studies concerning the measurement properties and interpretability of PROMIS measures in stroke patients. The findings of these studies were analyzed according to the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) guideline for systematic reviews of Patient-Reported Outcome Measures (PROMs). RESULTS: Ten studies were included. The PROMIS Global Health was studied the most: its two subscales had sufficient structural validity in one study of very good quality, sufficient construct validity with > 75% of hypotheses tested confirmed (high GRADE rating), sufficient internal consistency, i.e. α ≥ 0.70 in two studies (high GRADE rating), sufficient reliability, i.e. ICC ≥ 0.70 in one study of doubtful quality, and indeterminate responsiveness in one study of inadequate quality. For other PROMIS measures, the measurement properties and interpretability were limitedly studied. CONCLUSION: The PROMIS Global Health showed sufficient structural and construct validity and internal consistency in stroke patients. There is a need for further research on content validity, structural validity, and measurement invariance of PROMIS measures in stroke patients. Trial Registration Information: CRD42020203044 (PROSPERO).

Patient Activation During the First 6 Months After the Start of Stroke Rehabilitation.

OBJECTIVE: To examine patient activation from the start of stroke rehabilitation and its course up until the 6-month follow-up. DESIGN: Inception cohort study with a follow-up of 6 months. SETTING: Multidisciplinary rehabilitation facility. PARTICIPANTS: A total of 478 patients (N=478) with stroke who received inpatient or outpatient rehabilitation, with a median age of 63.0 years (interquartile range, 56.0-70.0 years) with 308 (64.2%) being men. The study was completed by 439 patients (91.8%). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Patient activation was measured with the Patient Activation Measure (PAM) (score 0-100, 4 levels, where a higher score and level denotes more patient activation). The PAM was measured at the start of the rehabilitation (baseline) and 3 and 6 months thereafter and was analyzed using the multivariate mixed model analysis. RESULTS: At baseline, the mean PAM score was 60.2±14.3, with the number of patients in PAM levels 1, 2, 3, and 4 being 76 (17.8%), 85 (19.9%), 177 (41.4%), and 90 (21.0%), respectively. The multivariate mixed-model analysis demonstrated that the PAM score increased over time (baseline 60.2±14.3 vs 3 months 60.7±14.8 vs 6 months 61.9±18.0; P.007). Between baseline and 6 months, 122 patients (41.4%) remained at the same PAM level, 105 patients (35.6%) increased, and 68 patients (23.1%) decreased. At all time points, >35% of patients were in level 1 or 2. CONCLUSIONS: PAM scores increased slightly over time from the start of rehabilitation up to the 6-month follow-up. However, more than one-third of patients remained at low levels (ie, level 1 and 2) of patient activation, which indicates that specific interventions during rehabilitation to increase patient activation might be of value.

Are There Differences in Long-Term Functioning and Recovery Between Hemorrhagic and Ischemic Stroke Patients Receiving Rehabilitation?

OBJECTIVE: Previous research suggested better recovery in functioning of patients with hemorrhagic as compared to ischemic stroke. Now that more effective acute treatment for ischemic stroke, i.e. thrombolysis and thrombectomy, has become available, this observational cohort study aimed to examine if current rehabilitation outcomes differ between patients with hemorrhagic and ischemic stroke. MATERIALS AND METHODS: The Barthel Index, 4 domains of the Stroke Impact Scale (SIS) and the EuroQol 5Dimensions were completed in all consecutive patients who received stroke rehabilitation at start of rehabilitation and during follow-up (for Barthel Index at discharge, SIS and EuroQol 5D after three and six months). Outcomes and recovery (i.e. change of scores between baseline and last follow-up) were compared between patients with hemorrhagic stroke and ischemic stroke (total and categorized by initial hospital treatment) using the Kruskall Wallis test. In addition, recovery was compared between ischemic and hemorrhagic stroke in multiple regression analyses with bootstrapping. RESULTS: Baseline functioning did not differ between 117 patients with a hemorrhagic stroke, 118 ischemic stroke patient treated with reperfusion therapy, and 125 ischemic stroke patients without reperfusion therapy. There were no differences in functioning at follow-up nor in recovery concerning the Barthel Index, SIS domains 'mobility', 'communication', 'memory and thinking' and 'mood and emotions', and EuroQoL 5D between the three categories. CONCLUSIONS: In a rehabilitation population the recovery and functioning at three or six months did not differ between ischemic stroke patients and hemorrhagic stroke patients, regardless of the hospital treatment they had received.

Position Statement on Exercise Dosage in Rheumatic and Musculoskeletal Diseases: The Role of the IMPACT-RMD Toolkit.

There is convincing evidence to suggest that exercise interventions can significantly improve disease-related outcomes as well as comorbidities in rheumatic and musculoskeletal diseases (RMDs). All exercise interventions should be appropriately defined by their dose, which comprises of two components: a) the FITT (frequency, intensity, time and type) and b) the training (ie, specificity, overload, progression, initial values, reversibility, and diminishing returns) principles. In the published RMD literature, exercise dosage is often misreported, which in "pharmaceutical treatment terms", this would be the equivalent of receiving the wrong medication dosage. Lack of appropriately reporting exercise dosage in RMDs, therefore, results in limited clarity on the effects of exercise interventions on different outcomes while it also hinders reproducibility, generalisability and accuracy of research findings. Based on the collective but limited current knowledge, the main purpose of the present Position Statement is to provide specific guidance for RMD researchers to help improve the reporting of exercise dosage and help advance research into this important field of investigation. We also propose the use of the IMPACT-RMD toolkit, a tool that can be used in the design and reporting phase of every trial.

Feasibility of Collecting Multiple Patient-Reported Outcome Measures Alongside the Dutch Arthroplasty Register.

BACKGROUND: Compliance rates with patient-reported outcome measures (PROMs) collected alongside arthroplasty registries vary in the literature. We described the feasibility of a routinely collected set PROMs alongside the Dutch Arthroplasty Register. METHODS: The longitudinal Leiden Orthopaedics Outcomes of OsteoArthritis Study is a multicenter (7 hospitals), observational study including patients undergoing total hip or total knee arthroplasty (THA or TKA). A set of PROMs: Short Form-12, EuroQol 5 Dimensions, Hip/Knee injury and Osteoarthritis Outcome Score, Oxford Hip/Knee Score was collected preoperatively and at 6, 12, 24 months, and every 2 years thereafter. Participation rates and response rates were recorded. RESULTS: Between June 2012 and December 2014, 1796 THA and 1636 TKA patients were invited, of whom 1043 THA (58%; mean age 68 years [standard deviation, SD: 10]) and 970 TKA patients (59%; mean age 71 years [SD 9.5]) participated in the study. At 6 months, 35 THA/38 TKA patients were lost to follow-up. Response rates were 90% for THA (898/1000) and 89% for TKA (827/932) participants. At 1 and 2 years, 8 and 18 THA and 17 and 11 TKA patients were lost to follow-up, respectively. The response rates among those eligible were 87% (866/992) and 84% (812/972) for THA and 84% (771/917) and 83% (756/906) for TKA patients, respectively. The 2-year questionnaire was completed by 78.5% of the included THA patients and by 77.9% of the included TKA patients. CONCLUSIONS: About 60% of patients undergoing THA or TKA complete PROMs preoperatively, with more than 80% returning follow-up PROMs. To increase the participation rates, more efforts concerning the initial recruitment of patients are needed.

Implementation of Physical Activity into routine Clinical pracTice in Rheumatic Musculoskeletal Disease: The IMPACT-RMD study protocol and rationale.

BACKGROUND: Physical activity is an important intervention for improving disease-related symptoms and systemic manifestations in rheumatic and musculoskeletal disease (RMDs). However, studies suggest that RMD patients report that the lack of individualized and consistent information about physical activity from managing doctors and healthcare professionals, acts as a barrier for engagement. On the other hand, managing doctors and healthcare professionals report lack of knowledge in this area and thus lack of confidence to educate and advise RMD patients about the beneficial effects of physical activity. The aim of the present study therefore, is to develop two e-Learning courses for RMD doctors and health professionals: a) the first one to provide consistent information about the collective benefits of physical activity in RMDs and b) the second on how to implement physical activity advice in routine clinical practice. METHODS: An international collaboration of seven countries, consisting of one academic institution and one patient organization from each country, will co-develop the two e-Learning courses. The final e-Learning courses will primarily target to improve - through physical activity advice - RMD symptoms which are important for patients. DISCUSSION: The main result of this study will be to co-develop two e-Learning courses that can be used by managing RMD doctors and healthcare professionals to be made aware of the overall benefits of physical activity in RMDs as well as how to implement physical activity advise within their practice.

What is Important in E-health Interventions for Stroke Rehabilitation? A Survey Study among Patients, Informal Caregivers and Health Professionals.

Incorporating user requirements in the design of e-rehabilitation interventions facilitates their implementation. However, insight into requirements for e-rehabilitation after stroke is lacking. This study investigated which user requirements for stroke e-rehabilitation are important to stroke patients, informal caregivers, and health professionals. The methodology consisted of a survey study amongst stroke patients, informal caregivers, and health professionals (physicians, physical therapists and occupational therapists). The survey consisted of statements about requirements regarding accessibility, usability and content of a comprehensive stroke e-health intervention (4-point Likert scale, 1=unimportant/4=important). The mean with standard deviation was the metric used to determine the importance of requirements. Patients (N=125), informal caregivers (N=43), and health professionals (N=105) completed the survey. The mean score of user requirements regarding accessibility, usability and content for stroke e-rehabilitation was 3.1 for patients, 3.4 for informal caregivers and 3.4 for health professionals. Data showed that a large number of user requirements are important and should be incorporated into the design of stroke e-rehabilitation to facilitate their implementation.

Outcome measures used in clinical studies on neonatal brachial plexus palsy: A systematic literature review using the International Classification of Functioning, Disability and Health.

BACKGROUND: Symptoms of a neonatal brachial plexus palsy (NBPP) can vary widely among individuals and numerous clinical studies have been performed to identify the natural history and to improve treatment. The aim of this study was to identify and describe all outcome measures used in clinical studies on patients with an NBPP and categorize these outcome measures according to the International Classification of Functioning, Disability and Health (ICF). METHOD: Electronic searches of different databases were carried out. All clinical studies describing one or more outcomes of NBPP were selected. Data on outcome measures was systematically extracted and the contents were analyzed and linked to the ICF. RESULTS: A total of 217 full texts were selected and 59 different outcome measures were identified. The 5 most frequently used outcome measures included range of motion of the shoulder (n= 166 studies, 76%), range of motion of the elbow (n= 87 studies, 40%), the Mallet scale (n= 66 studies, 30%), Magnetic Resonance Imaging (n= 37 studies, 17%) and the Medical Research Council motor grading scale (n= 31 studies, 14%). Assessments related to Body functions and Structures were most frequent, whereas assessments associated with Activities and Participation and Environmental Factors were relatively uncommon. CONCLUSION: There was a high variability among the outcome measures used, with measures within the ICF component Body Functions being most common. These results underscore the need for the development and usage of outcome measures representing all domains of health status in patients with NBPP.

Evaluation of shoulder function after secondary surgery in children with Neonatal Brachial Plexus Palsy.

PURPOSE: Shoulder function in children with Neonatal Brachial Plexus Palsy (NBPP) can be impaired. Functional gain is possible by an internal contracture release and muscle tendon transfer (ICL+MTT) for external rotation. This study evaluates the functional results of this intervention. METHODS: Assessments were done pre-operatively and 3, 6 and 12 months thereafter and included joint-mobility (ROM), muscle strength, arm function (Assisting Hand Assessment (AHA) and Mallet-score), Quality of Life (QoL) (Pediatric Outcome Data Collecting Instrument (PODCI)) and parental satisfaction. Changes were examined using Wilcoxon's Signed-Rank test and Cohen's effect size. RESULTS: Ten children (5 boys) aged 3-10 years who underwent a combined ICL+MTT (mm. Latissimus Dorsi/Teres Major) were included.Active and passive external rotation ROM and muscle strength improved (p < 0.05). Arm function improved according to the Mallet-score (Hand-to-Head, Hand-to-Mouth, External-Rotation) (p < 0.05) and the arm use and pace scales of the AHA (p < 0.05). The PODCI Upper Extremity/Physical Functioning and Global Functioning subscales also showed improvements (p < 0.05). Parents were highly satisfied concerning daily life activities and sports. CONCLUSION: ICL+MTT leads to improvement of ROM, strength, arm function, QoL and high parental satisfaction in this studies' patients and is therefore a good intervention to consider in children with NBPP with limited shoulder function.

Translation and adaptation of the Pediatric Outcome Data Collecting Instrument (PODCI) into the Dutch language and preliminary validation in children with Neonatal Brachial Plexus Palsy.

PURPOSE: This study aimed to translate and cross-culturally adapt the Pediatric Outcome Data Collecting Instrument (PODCI) into the Dutch language and evaluate its measurement properties among children (age 3-10) with Neonatal Brachial Plexus Palsy (NBPP). METHODS: The PODCI was translated and adapted according to international guidelines and administered to 10 children with NBPP before and after surgery and thereafter twice again. Subsequently, the Mallet-score, Assisting Hand Assessment and active Range of Motion (aROM) were recorded. Cronbach's-α and correlations between the PODCI and other outcome measures were determined, as well as Intraclass Correlation Coefficients (ICC). In addition, effect sizes (ES), Standard Response Means (SRM) and change scores with the 95% Confidence Interval (95% CI) were calculated. RESULTS: The final Dutch PODCI `Upper Extremity and Physical Function' subscale and total score `Global Functioning' showed good internal consistency (Cronbach's-α 0.695/0.781) and reliability (ICC 0.97/0.80) and were significantly associated with aROM and the Mallet-score. After surgery a significant change of the total score (ES 0.57, SRM 1.23, change 4.22 points, 95% CI 1.04-7.4) was seen. CONCLUSION: The final Dutch PODCI had good measurement properties and appears useful in evaluating quality of life and functioning in children with NBPP.

What's in the black box of arthritis rehabilitation? A comparison of rehabilitation practice for patients with inflammatory arthritis in northern Europe.

BACKGROUND: In evaluating complex interventions, it is a challenge for researchers to provide transparent reporting of the intervention content with sufficient detail and clarity such that effects can be compared across studies or countries. OBJECTIVE: To describe and compare the content of current rehabilitation for patients with inflammatory arthritis across 4 northern European countries. PATIENTS AND METHODS: A total of 731 patients with inflammatory rheumatic diseases participated in a multicentre, longitudinal observational study carried out in Sweden, The Netherlands, Denmark and Norway. Data on context, structure and process were reported by patients and teams at the different participating study sites according to the Scandinavian Team Arthritis Register-European Team Intiative for Care Research (STAR-ETIC) framework. RESULTS: Although large similarities were found in the context, there were important differences between the Netherlands and the Scandinavian countries. Regarding structure, there were considerable differences in the length of the rehabilitation period across settings and countries. The most evident differences concerned process variables, especially the type and dosage of individual treatment modalities. CONCLUSION: The variation in important aspects of arthritis rehabilitation found in the present study underline the need for transparent and standardized description of these variables when comparing effects across settings and countries. A standardized description of current practice can be achieved by the STAR-ETIC framework.

Designing a strategy to implement cost-effective blood transfusion management in elective hip and knee arthroplasties: a study protocol.

BACKGROUND: Total hip and knee arthroplasties are two of the most commonly performed procedures in orthopedic surgery. Different blood-saving measures (BSMs) are used to reduce the often-needed allogenic blood transfusions in these procedures. A recent large randomized controlled trial showed it is not cost effective to use the BSMs of erythropoietin and perioperative autologous blood salvage in elective primary hip and knee arthroplasties. Despite dissemination of these study results, medical professionals keep using these BSMs. To actually change practice, an implementation strategy is needed that is based on a good understanding of target groups and settings and the psychological constructs that predict behavior of medical professionals. However, detailed insight into these issuses is lacking. Therefore, this study aims to explore which groups of professionals should be targeted at which settings, as well as relevant barriers and facilitators that should be taken into account in the strategy to implement evidence-based, cost-effective blood transfusion management and to de-implement BSMs. METHODS: The study consists of three phases. First, a questionnaire survey among all Dutch orthopedic hospital departments and independent treatment centers (n = 99) will be conducted to analyze current blood management practice. Second, semistructured interviews will be held among 10 orthopedic surgeons and 10 anesthesiologists to identify barriers and facilitators that are relevant for the uptake of cost-effective blood transfusion management. Interview questions will be based on the Theoretical Domains Interview framework. The interviews will be followed by a questionnaire survey among 800 medical professionals in orthopedics and anesthesiology (400 professionals per discipline) in which the identified barriers and facilitators will be ranked by frequency and importance. Finally, an implementation strategy will be developed based on the results from the previous phases, using principles of intervention mapping and an expert panel. DISCUSSION: The developed strategy for cost-effective blood transfusion management by de-implementing BSMs is likely to reduce costs for elective hip and knee arthroplasties. In addition, this study will lead to generalized knowledge regarding relevant factors for the de-implementation of non-cost-effective interventions and insight in the differences between implementation and de-implementation strategies.

Effect of self-efficacy and physical activity goal achievement on arthritis pain and quality of life in patients with rheumatoid arthritis.

OBJECTIVE: To examine physical activity and achievement of physical activity goals in relation to self-reported pain and quality of life among patients with rheumatoid arthritis (RA). METHODS: At baseline, 271 patients with RA were asked to specify a physical activity goal, and filled in questionnaires assessing physical activity, motivation, and self-efficacy for physical activity, arthritis pain, and quality of life. Six months later, patients indicated to what extent they had achieved their baseline physical activity goal and completed the same set of questionnaires. These data were used to construct multiple mediation models that placed physical activity and physical activity goal achievement as mediators between self-efficacy and motivation on one hand, and arthritis pain and quality of life on the other. RESULTS: A total of 106 patients with RA completed both questionnaires. Self-efficacy at baseline predicted subsequent level of physical activity and achievement of physical activity goals. Goal achievement had a direct effect upon quality of life outcomes. Bootstrapping confidence intervals revealed indirect effects of self-efficacy upon arthritis pain and quality of life through goal achievement, but not through physical activity. CONCLUSION: Higher levels of self-efficacy for physical activity increase the likelihood that patients will achieve their physical activity goals. Achievement of physical activity goals seems to be related to lower self-reported arthritis pain, and higher levels of quality of life. In practice, clinicians can foster self-efficacy and goal achievement by assisting patients in setting realistic and attainable exercise goals, developing action plans, and by providing feedback on goal progress.

Cross-cultural validation of the Educational Needs Assessment Tool in RA in 7 European countries.

BACKGROUND: The Educational Needs Assessment Tool (the ENAT) is a 39-item patient questionnaire originally developed in the UK to assess educational needs of patients with rheumatoid arthritis (RA). The objective of this study was to assess the cross-cultural validity of the ENAT in 7 European countries. METHODS: The ENAT was translated into Dutch, Finnish, Norwegian, Portuguese, Spanish and Swedish versions by using Beaton's cross-cultural adaptation process, and was completed by a convenience sample of patients with RA in each country. The generated country-specific data were assessed for construct validity and were then pooled and assessed for cross-cultural invariance using Rasch analysis. RESULTS: Individual country-specific analysis showed adequate fit to the Rasch model after adjustment for local dependency within domains. When data from the different countries were pooled, the 39 items deviated significantly from Rasch model's expectations (X(2)=977.055, DF=351, p=0.000, PSI=0.976). Again, most items within domains were found to be locally dependent, significantly affecting the fit. Consequently each domain was treated as a unit (i.e. testlet) and the ENAT was re-analysed as a seven-testlet scale resulting into a good fit to the Rasch model (X(2)=71.909; DF=63; p=0.207, PSI=0.951). A test of strict unidimensionality confirmed that all domains contributed to measuring a single construct. Cross-cultural non-invariance was discounted by splitting domains for DIF maintaining an excellent fit to the Rasch model. This allowed calibration of the ENAT into an interval scale. CONCLUSION: The ENAT is a simple tool, which is a valid measure of educational needs of people with RA. Adjustment for cross-cultural non-invariance is available if data from the 7 European countries are to be pooled or compared.

[Conservative treatment of hip and knee osteoarthritis: a systematic, step-by-step treatment strategy]. / Conservatieve behandeling van heup- en knieartrose: systematische en stapsgewijze behandelstrategie.

In the Netherlands the current, conservative management of osteoarthritis of the hip and knee is heterogeneous and suboptimal. Existing guidelines only provide indications for certain interventions, but they do not provide recommendations about the sequence of these treatments. A step-by-step treatment strategy has now been developed in addition to the guidelines. Its aim is to optimize and clarify the conservative policy for osteoarthritis. In addition, communication between patients and professionals and between professionals themselves must be encouraged. According to the treatment strategy, relatively advanced interventions are considered only after simpler interventions have had insufficient results. A care booklet has also been developed that contains information for patients about osteoarthritis, treatment options, healthcare professionals and the treatment strategy.

The ParkinsonNet concept: development, implementation and initial experience.

The quality and efficiency of allied health care in Parkinson's disease (PD) must be improved. We have developed the ParkinsonNet concept: a professional regional network within the catchment area of hospitals. ParkinsonNet aims to: (1) improve PD-specific expertise among allied health personnel, by training a selected number of therapists according to evidence-based guidelines; (2) enhance the accuracy of referrals by neurologists; (3) boost patient volumes per therapist, by stimulating preferred referral to ParkinsonNet therapists; and (4) stimulate collaboration between therapists, neurologists, and patients. We describe the procedures for developing a ParkinsonNet network. Our initial experience with this new concept is promising, showing an increase in PD-specific and a steady rise in the patient volume of individual therapists.