Reliability of the Norwegian version of PainDETECT: a test-retest study

Objectives The PainDETECT Questionnaire (PD-Q) is a self-reported questionnaire aiming to assist in detecting neuropathic pain in individual patients. However, measurement properties of the Norwegian translated version should be examined, and the aim of the present study was to examine its test-retest reliability. Methods A total of 107 patients were initially recruited to the study from physiotherapy clinics. After screening for inclusion- and exclusion criteria, 67 participants remained for examining reliability of separate items. They were to fill out the PD-Q twice at an interval of 14 days. Intraclass correlation coefficient (ICC) and standard error of measurement (SEM) of total scores, and Kappa statistics and percentage of agreement of separate items and screening data were used in the analysis. Results Fifty-two participants filled out all items correctly, a prerequisite for determining the reliability of the total score and screening category. The ICC for the total score was 0.84 (95% confidence interval 0.73–0.91), SEM 2.5. The Kappa value for the screening category was 0.50 (95% confidence interval 0.31–0.69), and percentage of agreement 69%. Single items were found with reasonable to substantial reliability. Conclusion The Norwegian version of the PD-Q showed good test-retest reliability for the total score, but only moderate reliability of the screening category classifying the likelihood of neuropathic pain. The high number of missing answers indicates that some guidance from a health care professional is needed when filling out the questionnaire.publishedVersio

How do physiotherapists understand and interpret the ‘Pain Attitudes and Beliefs scale’? A cognitive interview study.

Background: The Pain Attitudes and Beliefs Scale (PABS) for physiotherapists aims to differentiate between clinicians’ biomedical and biopsychosocial treatment orientations regarding nonspecific low back pain (LBP). Objective: To study the content validity of the Norwegian PABS by following international guidelines: exploring its relevance, comprehensibility and comprehensiveness. Methods: Cognitive interviews were performed using the Three-Step Test Interview, consisting of think-aloud techniques, retrospective probing and in-depth interviews. Eleven Norwegian physiotherapists with a diversity of professional backgrounds participated. Results: The participants encountered little difficulty in completing the PABS. All items were deemed relevant and important but five items had ambiguous formulations which can easily be handled. The biomedical subscale appeared to be a comprehensive representation of biomedical treatment orientation. The biopsychosocial subscale was found to lack items concerning cognitive behavioral aspects of LBP management, such as patient education, therapeutic alliance, shared decision making and graded exposure. Conclusions: This study provides empirical evidence that the Norwegian version of the PABS-PT is relevant and comprehensible, provided some minor adjustments. The biopsychosocial subscale, however, lacks comprehensiveness, as it is not able to capture important aspects of contemporary biopsychosocial best practice care. Measurement of biopsychosocial treatment orientation may therefore be incomplete.publishedVersio

The ability of the Ages and Stages Questionnaire (ASQ) to indicate motor difficulties in infants in primary care

Introduction Delayed achievement of motor milestones may be an early indicator of motor difficulties. Parent-reported questionnaires may serve as an efficient, low-cost screening to identify infants in need of further clinical assessment, and thus be a helpful tool in busy health care centers. Purpose To examine the ability of the Ages and Stages Questionnaire, second edition (ASQ-2) to indicate motor difficulties in infants using the Infant Motor Profile (IMP) as the reference standard. Methods A cross-sectional design was applied to examine the correlation between parent-reported data of the ASQ-2 and data from physiotherapist assessment using IMP. Included were 432 mainly low-risk infants aged 3–12 months from primary care. Results Overall, ASQ-2 gross and fine motor scores did not correlate well with the IMP total or domain scores. The ASQ-2 gross motor cut point (> 2SD below the mean), showed 34.3% sensitivity and 96.7% specificity using the 15th percentile from IMP performance domain as reference standard. The positive predictive value to indicate motor difficulties was 48%. Conclusion The motor domains of ASQ-2 have poor ability to identify infants with motor difficulties as indicated by their IMP scores in low-risk infants.publishedVersio

Basic Body Awareness Therapy versus standard care in hip osteoarthritis. A randomized controlled trial

Background Compensational movement patterns in hip osteoarthritis (HOA) are associated with hip dysfunction. Basic Body Awareness Therapy (BBAT) promotes functional movement quality and might, accordingly, be beneficial in HOA. Objective To examine the outcomes of BBAT compared to standard care in people with HOA after first receiving patient education (PE). Study Design A prospective, assessor-blinded, and block-randomized controlled trial. Methods Community-living adults with HOA participating in PE were randomly allocated to an intervention group receiving BBAT in groups (12 sessions offered once a week), or a comparison group. Data at baseline (pretest) and at 6 months (posttest) were analyzed. Primary outcomes were pain during walking assessed by the Numeric Rating Scale (NRS) and function by the Hip Osteoarthritis Outcome Score, subscale ADL (HOOS A). Secondary outcomes addressed physical capacity, movement quality, and self-reported aspects of function and health. Results At pretest, there were no significant differences in demographic and test data between the intervention (n = 51) and the comparison (n = 50) group. Forty-one intervention and 45 comparison participants completed the posttest. At posttest, no significant differences in change between groups were found on NRS (p = 0.694, effect size (ES) = 0.02) or HOOS A (p = 0.783, ES = 0.07). Among secondary outcomes, movement quality improved significantly more (p < 0.001, ES = 0.84) in the intervention group. Compliance with BBAT varied substantially. Per-protocol analysis showed changes in favor of the intervention group for self-efficacy (p = 0.049, ES = 0.36), health (p = 0.037, ES = 0.44), and function (p = 0.029, ES = 0.53) when only intervention participants who completed at least 10 sessions of BBAT were included. Conclusions BBAT was not found to be a more effective treatment modality than self-initiated standard care to reduce pain during walking and improve daily functioning in people with HOA. Movement quality was significantly more improved in participants receiving BBAT, and improvement in other health aspects was associated with sufficient therapy compliance.publishedVersio

Clinimetric properties of a translated and culturally adapted Norwegian version of the Patient and Observer Scar Assessment Scale for use in clinical practice and research

Purpose To translate and culturally adapt the Patient and Observer Scar Assessment Scale, POSAS, to Norwegian and explore its test-retest, intra- and inter-tester reliability. Methods POSAS was translated into Norwegian following international guidelines in collaboration with an international translation bureau. Twenty-six adults and 24 children were recruited from a burns outpatient clinic. Three observer-categories: doctor, nurse and physiotherapist, assessed the patients’ scars and scored the Observer scale for estimating inter-tester reliability. Photos of the scars were taken and used to score the Observer scale a second time for examining intra-tester reliability. The patients or parents/next of kin rated their scar on the Patient scale at the clinic and after two days at home for examining test-retest reliability. Intraclass correlation (ICC) and Kappa were used for statistical analysis. Results A Norwegian version of POSAS (POSAS-NV) was developed. Inter-tester ICC of the Observer parameters varied between 0.203 and 0.728, and for the total sum score, ICC = 0.528 (0.280–0.708). Intra-tester ICC of the Observer scale ranged between 0.575 and 0.858. The Patient scale demonstrated high test–retest reliability. Conclusions Intra-tester reliability of the Observer scale and test–retest reliability of the Patient scale of POSAS-NV were found satisfactory, but not inter-tester reliability of the Observer scale.publishedVersio

Intra- and Inter-Rater Reliability of the Infant Motor Profile in Infants in Primary Health Care

Aim: To explore intra-rater and inter-rater reliability of the Infant Motor Profile (IMP). The IMP is a video-based method assessing movement quality (movement variation, adaptability, symmetry and fluency) and motor skills in infants aged 3 to 18 months. Method: The IMP assessment was performed on 50 infants aged 3 to 12 months recruited in connection with health control in primary health care, mean gestational age at birth 39.4 weeks, mean birthweight 3462 g. Seven infants had a moderately increased risk of developmental disorders. Three pediatric physiotherapists performed independent rating of the video recordings. One rater assessed the video recordings twice with a four-week interval. Results: Intraclass correlation coefficient (ICC) for intra-rater reliability was found satisfactory for the total IMP score (ICC = 0.95), and the domains: performance (ICC = 0.98), variation (ICC = 0.74), adaptability (ICC = 0.93) and fluency (ICC = 0.86). The ICC value for symmetry was 0.65. For inter-rater reliability, ICC values were satisfactory for the total IMP score (ICC = 0.86-0.91), and the domains: performance (ICC = 0.98), variation (ICC = 0.71-0.82), adaptability (ICC = 0.99) and fluency (ICC = 0.82-0.81). The ICC values for symmetry varied between 0.13-0.35. Conclusion: In this sample, including mostly low-risk infants, satisfactory intra- and inter-rater reliability for all domains were demonstrated, except for symmetry

Peak oxygen uptake and breathing pattern in COPD patients – a four-year longitudinal study

Background: Activities of daily living in patients with chronic obstructive pulmonary disease (COPD) are limited by exertional dyspnea and reduced exercise capacity. The aims of the study were to examine longitudinal changes in peak oxygen uptake (V̇O2peak), peak minute ventilation (V̇Epeak) and breathing pattern over four years in a group of COPD patients, and to examine potential explanatory variables of change. Methods: This longitudinal study included 63 COPD patients, aged 44-75 years, with a mean forced expiratory volume in one second (FEV1) at baseline of 51 % of predicted (SD = 14). The patients performed two cardiopulmonary exercise tests (CPETs) on treadmill 4.5 years apart. The relationship between changes in V̇ O2peak and V̇Epeak and possible explanatory variables, including dynamic lung volumes and inspiratory capacity (IC), were analysed by multivariate linear regression analysis. The breathing pattern in terms of the relationship between minute ventilation (V̇E) and tidal volume (VT) was described by a quadratic equation, VT = a + b∙V̇ E + c∙V̇E2, for each test. The VTmax was calculated from the individual quadratic relationships, and was the point where the first derivative of the quadratic equation was zero. The mean changes in the curve parameters (CPET2 minus CPET1) and VTmax were analysed by bivariate and multivariate linear regression analyses with age, sex, height, changes in weight, lung function, IC and inspiratory reserve volume as possible explanatory variables. Results: Significant reductions in V̇ O2peak (p < 0.001) and V̇ Epeak (p < 0.001) were related to a decrease in resting IC and in FEV1. Persistent smoking contributed to the reduction in V̇O2peak. The breathing pattern changed towards a lower VT at a given V̇ E and was related to the reduction in FEV1. Conclusion: Increasing static hyperinflation and increasing airway obstruction were related to a reduction in exercise capacity. The breathing pattern changed towards more shallow breathing, and was related to increasing airway obstruction.publishedVersio

Long-Term Change and Predictors of Change in Physical and Mental Function after Rehabilitation: A Multi-Centre Study

Objective: To investigate changes and predictors of change in physical and mental function over a 3-year period after rehabilitation. Design: Prospective cohort. Participants: Patients, across diseases, living in western Norway, accepted for somatic specialized interprofessional rehabilitation (n = 984). Methods: Physical and mental function were assessed at admittance (baseline), and after 1 and 3 years using the Medical Outcome Study Short Form 36 (SF-36). Associations between changes in SF-36 component summary scores and sense of coherence, pain, disease group (musculoskeletal, neoplasm, cardiovascular, neurological, other), exercise habits and demographic variables were analysed using linear mixed modelling. Results: In the total group, mean (standard deviation) physical component summary scores improved by 2.9 (8.4) and 3.4 (9.3) points at 1 and 3 years, respectively. Mental component summary scores improved by 2.1 (9.7) and 1.6 (10.8) points. Improvement in physical component summary was significantly greater for patients with higher sense of coherence (b = 0.09, p = 0.001) and for the neoplasm disease group (b = 2.13, p = 0.046). Improvement in mental component summary was significantly greater for patients with low sense of coherence (b = –0.13, p = < 0.001) and higher level of education (b = 3.02, p = 0.0302). Interaction with age (physical component summary: b = 0.22, p = 0.039/mental component summary b = 0.51, p = 0.006) indicated larger effect at 1 year than at 3 years. Conclusion: Physical and mental function improved in the total study group over the 3-year period. Sense of coherence at baseline was associated with improved physical and mental function, suggesting that coping resources are important in rehabilitation.publishedVersio

Psychometric properties of the Vertigo symptom scale – Short form

<p>Abstract</p> <p>Background</p> <p>The aim of the study was to examine the psychometric properties of the Vertigo symptom scale – short form (VSS-SF), a condition-specific measure of dizziness, following translation of the scale into Norwegian.</p> <p>Methods</p> <p>A cross-sectional survey design was used to examine the factor structure, internal consistency and discriminative ability (sample I, n = 503). A cross-sectional pre-intervention design was used to examine the construct validity (sample II, n = 36) of the measure and a test-retest design was used to examine reliability (sub-sample of sample II, n = 28).</p> <p>Results</p> <p>The scree plot indicated a two factor structure accounting respectively for 41% and 12% of the variance prior to rotation. The factors were related to vertigo-balance (VSS-V) and autonomic-anxiety (VSS-A). Twelve of the items loaded clearly on either of the two dimensions, while three items cross-loaded. Internal consistency of the VSS-SF was high (alpha = 0.90). Construct validity was indicated by correlation between path length registered by platform posturography and the VSS-V (r = 0.52), but not with the VSS-A. The ability to discriminate between dizzy and not dizzy patients was excellent for the VSS-SF and sub-dimension VSS-V (area under the curve 0.87 and 0.91, respectively), and acceptable for the sub-dimension VSS-A (area under the curve 0.77). High test-retest reliability was demonstrated (ICC VSS-SF: 0.88, VSS-V: 0.90, VSS-A: 0.90) and no systematic change was observed in the scores from test to retest after 2 days.</p> <p>Conclusion</p> <p>Using a Norwegian translated version of the VSS-SF, this is the first study to provide evidence of the construct validity of this instrument demonstrating a stable two factor structure of the scale, and the identified sub-dimensions of dizziness were related to vertigo-balance and autonomic-anxiety, respectively. Evidence regarding a physical construct underlying the vertigo-balance sub-scale was provided. Satisfactory internal consistency was indicated, and the discriminative ability of the instruments was demonstrated. The instrument showed satisfactory test-retest reliability.</p

Oral medicine acceptance in infants and toddlers: measurement properties of the caregiver-administered Children’s acceptance tool (CareCAT)

BACKGROUND: Developing age-appropriate medications remains a challenge in particular for the population of infants and toddlers, as they are not able to reliably self-report if they would accept and consequently take an oral medicine. Therefore, it is common to use caregivers as proxies when assessing medicine acceptance. The outcome measures used in this research field differ and most importantly lack validation, implying a persisting gap in knowledge and controversy in the field. The newly developed Caregiver-administered Children’s Acceptance Tool (CareCAT) is based on a 5-point nominal scale, with descriptors of medication acceptance behavior. This crosssectional study assessed the measurement properties of the tool with regards to the user’s understanding and its intra- and inter-rater reliability. METHODS: Participating caregivers were enrolled at a primary healthcare facility where their children (median age 6 months) had been prescribed oral antibiotics. Caregivers, trained observers and the tool developer observed and scored on the CareCAT tool what behavior children exhibited when receiving the medicine (n = 104). The videorecords of this process served as replicate observations (n = 69). After using the tool caregivers were asked to explain their observations and the tool descriptors in their own words. The tool’s reliability was assessed by percentage agreement and Cohen’s unweighted kappa coefficients of agreement for nominal scales. RESULTS: The study found that caregivers using CareCAT had a satisfactory understanding of the tool’s descriptors. Using its dichotomized scores the tool reliably was strong for acceptance behavior (agreement inter-rater 84–88%, kappa 0.66–0.76; intra-rater 87–89%, kappa 0.68–0.72) and completeness of medicine ingestion (agreement inter-rater 82–86%, kappa 0.59–0.67; intra-rater 85–93%, kappa 0.50–0.70). CONCLUSIONS: The CareCAT is a low-cost, easy-to-use and reliable instrument, which is relevant to assess acceptance behavior and completeness of medicine ingestion, both of which are of significant importance for developing age-appropriate medications in infants and toddlers