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Tore K Kvien

Publications and source records attributed to Tore K Kvien.

At least 19 recordsLinked to original sources
PubMed2006

Stability of the patient acceptable symptomatic state over time in outcome criteria in ankylosing spondylitis.

OBJECTIVE: The Patient Acceptable Symptomatic State (PASS) is the highest level of symptoms beyond which patients consider themselves well. It provides clinically meaningful information to interpret results from scales or questionnaires. Our goal was to determine the PASS in main outcome criteria when assessing patients with ankylosing spondylitis (AS) and to evaluate whether the PASS is stable over time. METHODS: We used data from a randomized controlled trial of 330 patients with AS. The PASS was estimated at weeks 2, 6, and 12 for the following patient-reported outcomes: global pain (measured on a visual analog scale [VAS]), nocturnal pain (VAS), patient's global assessment of disease activity (VAS), disease activity (Bath Ankylosing Spondylitis Disease Activity Index [BASDAI]), and functional impairment (Bath Ankylosing Spondylitis Functional Index [BASFI]). We used an anchoring method based on patients answering yes or no to, "Is your current condition satisfactory, when you take your general functioning and your current pain into consideration?" The PASS was defined as the 75th percentile of the score for patients who considered their state satisfactory. All patients were considered together in the analysis. RESULTS: The values (95% confidence interval) of PASS were 33.5 (29.2-38.6) for pain, 28.0 (23.1-34.1) for night pain, 35.7 (31.3-41.1) for patient's global disease assessment, 31.4 (26.9-37.0) for BASFI, and 34.5 (30.9-38.9) for BASDAI. The PASS estimates were stable over time for all criteria during followup. CONCLUSION: This study provides cutoff values for the PASS for the main outcome measures in AS and shows that PASS values are stable over time.

Adult↗
PubMed2006

Rheumatology care: Involvement in medical decisions, received information, satisfaction with care, and unmet health care needs in patients with rheumatoid arthritis and ankylosing spondylitis.

OBJECTIVE: To examine levels of received information, involvement in medical decisions, and satisfaction with care, to explore factors related to current involvement in medical decisions, and to assess patients' unmet health care needs related to their disease. METHODS: A total of 1,193 patients with rheumatoid arthritis and ankylosing spondylitis completed self-reported health status questionnaires, including registration of sociodemographic data and questions about rheumatology care. Separate questions addressed information received, involvement in decisions, and satisfaction with care. Aspects of unmet health were assessed by an open-ended question. RESULTS: The majority of patients reported medium to high levels of received information, involvement in medical decisions, and satisfaction with care. High involvement in medical decisions was univariately associated with high levels of perceived information and satisfaction, as well as with lower age and a good health status. In the multivariate analyses, patient satisfaction (odds ratio [OR] 4.21) and a high level of received information (OR 7.85), age (OR 0.99), and >12 years of formal education (OR 1.46) remained as significant predictors to current involvement. Nearly one-third reported a variety of unmet health care needs, and this report was associated with poor health. CONCLUSION: The results indicate a need for a more flexible and patient centered care model, in which patients to a larger degree can decide which services they need and how these services should be delivered.

Arthritis, Rheumatoid↗
PubMed2006

Association of early radiographic damage with impaired physical function in rheumatoid arthritis: a ten-year, longitudinal observational study in 238 patients.

OBJECTIVE: To investigate the longitudinal relationship between physical disability, disease activity, and radiographic damage over 10 years in patients with rheumatoid arthritis (RA). METHODS: A cohort of 238 consecutively enrolled RA patients from the European Research on Incapacitating Disease and Social Support study (age range 20-70 years, mean disease duration 2.3 years, 68% rheumatoid factor [RF] positive) was followed up longitudinally for 10 years. Assessments at baseline and at years 1, 2, 5, and 10 comprised review of demographic variables, measurement of disease activity with the erythrocyte sedimentation rate (ESR), functional evaluations using the Health Assessment Questionnaire (HAQ) and grip strength (average value of the right and left hand), and radiographs of the hands scored by the van der Heijde modification of the Sharp method. Marginal modeling by generalized estimating equations was used to study the longitudinal relationship between the ESR and modified Sharp radiographic damage score with respect to explaining the HAQ score and grip strength. Age, sex, RF status, and disease duration were entered as covariates. RESULTS: The HAQ score and grip strength were longitudinally associated with the momentary modified Sharp/van der Heijde score as well as with progression in this score, independent of the ESR. Therefore, an increase of 10 units in the modified Sharp/van der Heijde score will result in a 0.03-unit increase in HAQ score and a 0.95-kg decrease in grip strength, after adjustment for the ESR. CONCLUSION: This 10-year observational study provides evidence that both radiographic damage and disease activity are independent contributors to impaired physical function in RA, both early and late in the disease process.

Adult↗
PubMed2006

Epidemiological aspects of rheumatoid arthritis: the sex ratio.

Many rheumatic diseases, including rheumatoid arthritis (RA) are more frequent in females than males. The objective of this article was to examine the female versus male perspective regarding prevalence/incidence, etiological factors, disease severity/outcomes, access to therapy and therapeutic responses. We also present results from some new analyses from the patient registers in Oslo to supplement existing literature in this area. We found that the prevalence of RA is higher in females than males, the incidence is 4-5 times higher below the age of 50, but above 60-70 years the female/male ratio is only about 2. Smoking is a consistent predictor of RA in males, but findings have been more inconsistent in females. We could not confirm that health status is worse in females than males when corrections were made for different disease duration and for the underlying tendency of healthy females to report worse subjective health status than males. Some studies and data presented here indicate that females have less access to health services. We also found that female sex reduces the likelihood of achieving treatment response with methotrexate and anti-tumor necrosis factor (anti-TNF) drugs by 30-50%. More research is needed to fully describe the differences between males and females regarding epidemiological data.

Adult↗
PubMed2005

Reduced loss of hand bone density with prednisolone in early rheumatoid arthritis: results from a randomized placebo-controlled trial.

BACKGROUND: Bone damage in rheumatoid arthritis presents as osteoporosis and joint erosions. Prednisolone has been shown to reduce the rate of hand joint destruction as seen on radiography but has not been shown to reduce the rate of hand bone loss. METHODS: In a double-blind study comparing oral prednisolone (7.5 mg/d for 2 years) with placebo, hand bone density assessed with digital x-ray radiogrammetry was examined in 95 patients with rheumatoid arthritis with disease duration of less than 2 years. RESULTS: The mean loss of hand bone density was less in prednisolone-treated patients compared with placebo-treated patients at the 1-year follow-up (-0.011 vs -0.022 g/cm(2)) (P = .005) and at the 2-year follow-up (-0.026 vs -0.039 g/cm(2)) (P = .03). The mean percentage group difference in loss of hand bone density was 2.8% (P = .004) at the 1-year follow-up and 3.5% (P = .01) at the 2-year follow-up. In the first year, C-reactive protein, a marker of inflammation, was strongly correlated with hand bone loss in placebo-treated patients but not in prednisolone-treated patients, suggesting that prednisolone breaks the link between bone loss and inflammation. CONCLUSIONS: To our knowledge, this is the first double-blind randomized study to show that disease-related loss of hand bone density in rheumatoid arthritis can be decelerated by prednisolone. This finding suggests that the deleterious effect of prednisolone on bone may be counteracted by its anti-inflammatory effect.

Adult↗
PubMed2005

Fatigue in patients with ankylosing spondylitis: A comparison with the general population and associations with clinical and self-reported measures.

OBJECTIVE: To investigate 1) levels of fatigue in patients with ankylosing spondylitis (AS) compared with the general population; 2) the relationships between fatigue and demographic, self-reported, and clinical measures; and 3) the performance of both a generic and a disease-specific measure of fatigue. METHODS: Patients with AS (n = 152) were compared with people from the general population (n = 2,323). Fatigue was assessed by the Short Form 36 (SF-36) vitality scale and the fatigue item of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI). Other measures of self-reported health included BASDAI for disease activity, Bath Ankylosing Spondylitis Functional Index for functional abilities, and the SF-36 for mental health. Clinical measures comprised Bath Ankylosing Spondylitis Metrology Index for joint mobility and erythrocyte sedimentation rate and C-reactive protein as inflammatory markers. The explanatory power of demographic, self-reported, and clinical measures was examined in a block regression model. RESULTS: The mean +/- SD SF-36 vitality score was 43 +/- 24 in the patients and 60 +/- 21 in the general population (P < 0.001). The SF-36 vitality and the BASDAI fatigue scores were consistently associated with measures of mental health and disease activity. Clinical measures did not show explanatory power. A cutoff at 70 mm on the BASDAI fatigue item implied specificity of 0.77 and sensitivity of 0.82. CONCLUSION: Self-reported measures of disease activity and mental health contributed significantly to explain fatigue, whereas clinical measures of inflammation and joint mobility did not. The BASDAI fatigue item reached acceptable sensitivity and specificity with a cutoff at 70 mm when using the low vitality scores of SF-36 as an external indicator.

Adult↗
PubMed2005

The comparative effectiveness of tumor necrosis factor-blocking agents in patients with rheumatoid arthritis and patients with ankylosing spondylitis: a six-month, longitudinal, observational, multicenter study.

OBJECTIVE: To compare the effectiveness of tumor necrosis factor (TNF)-blocking agents (etanercept and infliximab) in patients with rheumatoid arthritis (RA) and patients with ankylosing spondylitis (AS). METHODS: Data from an ongoing longitudinal, observational study in Norway were used to assess changes in health-related quality of life (HRQOL) in patients with RA (n = 291) and AS (n = 62). Patients received anti-TNF therapy, and changes in scores on the Short Form 36 (SF-36), SF-6D, modified Health Assessment Questionnaire, and visual analog scales for patients' assessments of pain, fatigue, and global status from baseline to followup examinations at 3 and 6 months were compared. Data were adjusted for age, sex, and baseline values and are presented as crude estimates as well as standardized response means. RESULTS: Both groups had improvements in all measures at 3 and 6 months. At 3 months, the changes were significantly better in the AS group compared with the RA group for all measures except the SF-36 social functioning scores. At 6 months, all changes were numerically greater in the AS group. Differences were significant for the SF-36 role emotional scores and were borderline significant for the SF-36 physical functioning, role physical, and vitality scores and for the SF-6D scores. CONCLUSION: In this real-life setting, patients with AS experienced improvement in HRQOL that was comparable to, and sometimes greater than, that observed in RA patients. These results support the idea that patients with AS should have the same access to TNF-blocking agents as patients with RA.

Adult↗
PubMed2005

Reliability and sensitivity to change of the OMERACT rheumatoid arthritis magnetic resonance imaging score in a multireader, longitudinal setting.

OBJECTIVE: To assess the intra- and interreader reliability and the sensitivity to change of the Outcome Measures in Rheumatology Clinical Trials (OMERACT) Rheumatoid Arthritis Magnetic Resonance Imaging Score (RAMRIS) system on digital images of the wrist joints of patients with early or established rheumatoid arthritis (RA). METHODS: Ten sets of baseline and 1-year followup MR images of the wrists of patients with progressive changes on conventional hand radiographs were scored independently by 4 readers on 2 consecutive days, preceded by reader training and calibration. The MR images were acquired and scored according to the recommendations from the OMERACT MRI group. The intra- and interreader agreement (evaluated by intraclass correlation coefficients [ICCs]) and the sensitivity to change (evaluated by the smallest detectable difference [SDD]) were determined for scores of synovitis, erosion, and bone marrow edema status and for change scores. RESULTS: Intrareader ICCs were generally very high, both for status scores (median baseline and followup 0.89 and 0.90 for synovitis, 0.91 and 0.90 for erosion, and 0.90 and 0.98 for edema) and for change scores (median 0.80 for synovitis, 0.96 for erosion, and 0.97 for edema). The SDDs were generally low, suggesting a high potential to detect changes. Interreader single-measure ICCs were high for status scores (mean baseline and followup 0.69 and 0.78 for synovitis, 0.83 and 0.73 for erosion, and 0.79 and 0.95 for edema) and for change scores (mean 0.74 for synovitis, 0.67 for erosion, and 0.95 for edema). The average-measure ICCs were > or =0.94 for all components of both the status scores and change scores. CONCLUSION: The RAMRIS showed very good intrareader reliability, good interreader reliability, and a high level of sensitivity to change. The results suggest that the RAMRIS may be a suitable system for use in monitoring joint inflammation and destruction in RA.

Arthritis, Rheumatoid↗
PubMed2005

Impact of functional impairment in ankylosing spondylitis: impairment, activity limitation, and participation restrictions.

OBJECTIVE: To describe difficulties in everyday activities related to impaired function in patients with ankylosing spondylitis (AS), and to examine possible sex differences in the impact of the disease. In addition, to examine the relationships between measures of personal characteristics, impairment, and activity/participation levels within the framework of the International Classification of Functioning (ICF). METHODS: A total of 152 patients with AS took part in a clinical examination including anthropometric measures, blood samples, and self-reported disease related measures. The Canadian Occupational Performance Measure (COPM) interviews were performed to describe and measure activity limitations and participation restrictions perceived by the patient during the last year. The study variables were categorized and analyzed according to the levels of the ICF model using bivariate and multivariate statistical approaches. RESULTS: The mean age of patients was 47 (SD 13) years, 58% were men, and the mean disease duration was 15 (SD 12) years. The problems most frequently reported in COPM interviews were "interrupted sleeping," "turn head when driving," "carry groceries," and ""having energy for social activities." Women reported higher level of disease activity and more physical limitations than men. Disease activity and reduced mobility (impairment variables) seemed to result in more activity/participation restrictions in female than in male patients. The impairment variables explained only one-third of the activity and participation restrictions perceived by patients. CONCLUSION: Activity limitations and participation restrictions reported by patients were only partly explained by the impairment variables. Further research should identify social, structural, and attitudinal barriers influencing activity and participation in patients with AS.

Activities of Daily Living↗
PubMed2005

Reproducibility and sensitivity to change of 5 methods for scoring hand radiographic damage in patients with rheumatoid arthritis.

OBJECTIVE: To compare intrarater and interrater reproducibility and sensitivity to change of 5 scoring methods for radiographic damage on hand radiographs in patients with rheumatoid arthritis (RA). METHODS: Radiographs of 22 patients from Norway and France with average 2 years' disease duration at baseline and mean 30 months' followup were assessed by 2 readers according to Larsen, Larsen/Rau, Sharp, Sharp/van der Heijde, and Simple Erosion Narrowing Score (SENS) methods. Reproducibility at baseline and on progression was assessed using intraclass correlation coefficients (ICC) and Bland-Altman graphs. Sensitivity to change was compared across methods by computing the country-adjusted standardized response means (SRM) ratio. RESULTS: Intrarater reproducibility varied with the reader (ICC ranging from 0.90 to 0.97), with Larsen and Larsen/Rau ranking highest. Interrater reproducibility was highest with Sharp and Sharp/van der Heijde (ICC 0.76 to 0.93). Bland-Altman graphs showed a decrease of concordance in cases of more severe damage. Sensitivity to change was higher with Sharp and Sharp/van der Heijde modified for erosions (SRM ratio 1.44 and 1.70), than with Larsen/Rau and SENS. The differences between Sharp, Sharp/van der Heijde, and Larsen were less for joint space narrowing. There was a significant reader effect (p < 0.05) in all but the Sharp method. Expressed as percentage of the maximum score, the smallest detectable difference varied between 3.5% (Sharp/van der Heijde) and 14.2% (SENS erosion). CONCLUSION: All methods have high intraobserver and interobserver reliability. The interrater reproducibility decreases with disease severity. Recent modified methods perform best to detect changes, but the advantages of SENS seemed to be lost when applied on hand radiographs alone. Training the readers appears to be essential.

Arthritis, Rheumatoid↗
PubMed2005

Reliability of the Canadian Occupational Performance Measure in patients with ankylosing spondylitis.

OBJECTIVE: The Canadian Occupational Performance Measure (COPM) is a client-centered measure, designed to detect changes in occupational performance over time. The main aim of our study was to examine the test-retest reliability of the Norwegian version of the COPM in patients with ankylosing spondylitis (AS) in 3 different retest modes of data collection. METHODS: A total of 119 patients with AS completed the baseline COPM interview before randomization into one of 3 modes of retest data collection performed 2 weeks later: by personal interview, telephone interview, or mailed questionnaire. Scores were computed for Performance and Satisfaction, and the 2 sets of scores were examined for reliability by intraclass correlations (ICC), and by the Bland-Altman procedure for calculation of smallest detectable difference (SDD). RESULTS: The ICC coefficients for Performance and Satisfaction were as follows: 0.92 and 0.93 (rescoring by personal interview), 0.73 and 0.73 (rescoring by telephone interview), and 0.90 and 0.90 (rescoring by mail). SDD for the Performance and Satisfaction scores were 1.47 and 1.80, respectively, for rescoring by personal interview; 3.14 and 4.00 for rescoring by telephone interview; and 2.20 and 2.41 for rescoring by mailed survey. CONCLUSION: The results confirm that the COPM is a reliable instrument for use in clinical practice in patients with AS, and may serve as an instrument to promote a patient-centered approach in the planning and evaluation of rehabilitation programs. Mailed questionnaires may replace personal interview in followup examinations, while rescoring by telephone interview is less reliable.

Adult↗
PubMed2005

The Cochrane review of physiotherapy interventions for ankylosing spondylitis.

OBJECTIVE: To update the Cochrane review on the effectiveness of physiotherapy interventions in the management of ankylosing spondylitis (AS). METHODS: All randomized studies available in systematic searches (electronic databases, contact with authors, reference lists) up to February 2004 were included. Two reviewers independently selected trials for inclusion, assessed the validity of included trials, and extracted data. Investigators were contacted to obtain missing information. RESULTS: Six trials with a total of 561 participants were included. Two trials compared individualized home exercise programs with no intervention. Low quality evidence for effects in favor of the home exercise program was found in physical function and spinal mobility [absolute benefit 10.3 cm on fingertip to floor distance; relative percentage difference (RPD) 37%)]. Further, the trials showed low quality evidence for no group differences in pain. Three trials compared supervised group physiotherapy with an individualized home exercise program. Moderate quality evidence for effectiveness was found in patient global assessment and spinal mobility in favor of the supervised group. The trials showed moderate quality evidence for no differences in pain intensity between the groups. One trial compared a 3-week inpatient spa-exercise therapy followed by weekly outpatient group physiotherapy with weekly outpatient group physiotherapy alone. Moderate quality evidence was found for effects in pain (absolute benefit 0.9 cm on visual analog scale; RPD 19%), physical function (absolute benefit 1 cm; RPD 24%), and patient global assessment (absolute benefit 1.3 cm; RPD 27%), in favor of the combined spa-exercise therapy. CONCLUSION: The current best available evidence suggests that physiotherapy is beneficial for people with AS. However, it is still not clear which treatment protocol should be recommended in the management of AS.

Ambulatory Care↗
PubMed2005

Incorporating the patient perspective into outcome assessment in rheumatoid arthritis--progress at OMERACT 7.

The Patient Perspective Workshop at OMERACT 7 addressed the question of assessing the outcomes of intervention in rheumatoid arthritis (RA) from the perspective of those who experience the disease. A particular emphasis at this workshop was placed on fatigue, but other areas included well-being, real-time assessment, patient priorities, and needs in early and late disease. Through a series of overview presentations, discussion groups, and plenary sessions, workshop participants (who included 19 patients) clarified what is known and what are the outstanding issues for future research. The importance of further work on clarifying the validity of fatigue measurements in RA has been confirmed, and with at least one suitable instrument available there will be strong pressure to include fatigue in a redefined core set of outcome measures in RA. In the other 4 areas covered there are important issues that can be addressed by enquiry and experiment and that together provide a challenging research agenda. At the final plenary session the OMERACT conference endorsed, by a large majority, the proposal that fatigue may warrant consideration for inclusion in the OMERACT core set for RA.

Arthritis, Rheumatoid↗
PubMed2004

Norwegian version of the Canadian Occupational Performance Measure in patients with hand osteoarthritis: validity, responsiveness, and feasibility.

OBJECTIVE: To test the Norwegian version of the Canadian Occupational Performance Measure (COPM) for validity, responsiveness, and feasibility in patients with hand osteoarthritis. METHODS: Seventy-nine patients completed a COPM interview and several self-reported health status questionnaires, including Arthritis Impact Measurement Scales 2, modified Health Assessment Questionnaire; Western Ontario and McMaster Universities Osteoarthritis Index, and the Australian/Canadian Osteoarthritis Hand Index. Rescoring of the same instruments was performed 4 months later, after an intervention. RESULTS: The COPM detected a great variability of occupational performance problems. The hypotheses for testing validity were confirmed. Mean COPM change was 1.51 (P < 0.001) in performance score, and 2.22 (P < 0.001) in satisfaction score. The median time spent on the COPM interview was 30 minutes (range 10-70 minutes). The patients found the questions easy to understand, but 37% reported problems performing the scoring procedure. CONCLUSIONS: The Norwegian version of the COPM is a valid and responsive instrument for use in clinical practice in osteoarthritis patients. It may serve as an instrument to promote a client-centered approach and as a supplement to other health measures in the planning and evaluating of interventions. Feasibility regarding scoring needs to be improved.

Aged↗
PubMed2004

Incidence of vertebral deformities in 255 female rheumatoid arthritis patients measured by morphometric X-ray absorptiometry.

To date, no studies have been published on incident deformities in patients with rheumatoid arthritis (RA). Morphometric X-ray absorptiometry (MXA) is an alternative to conventional X-rays for identifying vertebral deformities. The aim of the present study was to describe the incidence of vertebral deformities in 255 female RA patients measured by MXA, and the relationship between incident deformities and clinical and demographic variables. MXA is still under evaluation for its ability to identify deformities, so we explored four different cut-off thresholds including fixed percentage reduction and the principle of least significant change (LSC). MXA (T4-L4) and BMD (L2-L4 and total hip; Lunar Expert) were performed on 255 patients (mean age 54.3, range 29.2-70.8 years) at baseline and after a mean period of 2.3 years. MXA scans were analyzed pairwise by the same trained technician, and incident deformities calculated applying LSC with a 99.9% and 99.99% confidence limit, and a fixed reduction of 20% and 25% for anterior, middle or posterior heights. Long term precision (%CV) of height measurements for all vertebrae combined (T4-L4) were 4.8, 4.8 and 4.4, respectively. Frequency and distribution of incident deformities varied from 39 deformities in 33 patients (fixed 20% reduction) to 17 deformities in 15 patients (fixed 25% reduction), and quality control analyses revealed a high number of presumed false deformities. Incidence per 100 patient years varied from 2.9 to 6.7 deformities according to method, and was comparable to those obtained from intervention studies in corticosteroid-induced osteoporosis. Patients with incident deformities were significantly older, had lower BMD, higher disability and more often a previous non-vertebral fractures than those without incident deformities Incident deformities by MXA need further evaluation in secondary osteoporosis. It seems, however, that older patients with previous limb fractures and low BMD are especially prone to this complication.

Absorptiometry, Photon↗
PubMed2004

Vertebral deformities in rheumatoid arthritis: a comparison with population-based controls.

BACKGROUND: Previous studies have shown an increased prevalence of osteoporosis in rheumatoid arthritis (RA), but the extent of osteoporotic fractures is not clarified. The aim of this study was to compare the prevalence of vertebral deformities in a representative, population-based cohort of female patients with RA with that in matched controls, and to examine the relationship between deformities and RA, bone mineral density (BMD), and corticosteroid use. METHODS: Female patients (mean age, 63.0 years; range, 50.7-73.6 years) were recruited from a county register of patients with RA. Population controls were matched for age, sex, and residential area. Participants had thoracolumbar radiographs taken according to a standardized procedure, and BMD was measured at the hip and spine (L2-L4). RESULTS: The overall number of vertebral deformities was substantially higher in the RA group compared with controls (147 vs 51, applying the morphometric criteria), with a highly significant difference between patients and controls regarding the presence of multiple deformities measured morphometrically (11.2% vs 4.8%; odds ratio, 2.60; 95% confidence interval, 1.21-6.04) and moderate or severe deformities measured semiquantitatively (17.3% vs 10.0%; odds ratio, 2.00; 95% confidence interval, 1.11-3.74). In Poisson regression analysis, vertebral deformities were independently associated with RA, BMD, and long-term corticosteroid use. CONCLUSIONS: Vertebral deformities are markedly increased in patients with RA compared with controls, especially regarding severe and multiple deformities. A diagnosis of RA was associated with vertebral deformities independently of BMD and long-term corticosteroid use. These findings have important implications for prevention of established osteoporosis in RA.

Aged↗