Responsiveness of Goal Attainment Scaling in comparison to two standardized measures in outcome evaluation of children with cerebral palsy

A scoping review of observation-based tools for assessing use of the upper limb in activities

PURPOSE

To summarise information about tools available to rate observed performance in activities, tested with populations with upper limb impairment.

METHODS AND MATERIALS

A scoping review was conducted. Articles were included if they reported psychometric properties of tools that could be used with populations with upper limb impairment, had at least one activity item, and item/s involved use of the upper limbs. Information about the tools was extracted, summarised and key findings are presented.

RESULTS

Twenty-seven tools met the inclusion criteria. The results indicated that few tools used client-selected (19%) items or clinician-selected (11%) items. Most tools (70%) used pre-defined items. Fourteen tools (52%) included activity-only items. Eleven tools (41%) had less than half activity items. An in-depth summary of the tools with activity-only items is reported.

CONCLUSION

Many tools exist for assessing observed performance in activities to examine use of the upper limb. However, there were few tools (N = 6) available that assess observed performance in client-selected activities.

Effectiveness of Family-Professional Collaboration on Functional Goals Achievement of Children with Cerebral Palsy and Caregivers' Quality of Life and Burden: A Randomized Comparative Study

Background: Family-professional collaboration is important to enhance the outcomes for children with cerebral palsy and their caregivers. Aims: This study examined the effect of implementing a family-professional collaboration practice model on children with cerebral palsy and their caregivers. Materials and methods: A randomized, single-blind comparative study included 28 physical therapists, 44 children with cerebral palsy between the ages of 2 and 12 years old, and their caregivers. Physical therapists in the experimental group received training in how to implement collaboration in their therapy sessions over the course of two sessions (3 h each). The children's achievement goal-range rate was measured using the Goal Attainment Scaling, the caregivers' quality of life was assessed using the World Health Organization Quality of Life-Brief, and the caregiver burden was evaluated using the Zarit Burden Interview. Results: All children showed improvement on the Goal Attainment Scaling change rate (p = 0.002), with no significant differences between groups (p < 0.44). However, a group × time interaction was observed. The Children Goal Attainment Scaling rate decreased between the two assessment sessions for children in the control group, while the Goal Attainment Scaling change rate was steady for the experimental group. There were no main effects of time and group or interaction of time × group reported on World Health Organization Quality of Life-Brief domains and no main effect of time on the Zarit Burden Interview, but there was a main effect between groups (p = 0.03), with partial eta square = 0.11 in favor of the experimental group. Conclusions: The family-professional collaboration practice model could be a potential practice to positively improve the outcomes in children with cerebral palsy and their caregivers.

A pilot rating system to evaluate the quality of goal attainment scales used as outcome measures in rehabilitation

Goal Attainment Scaling (GAS) is a method for writing person-centred approach evaluation scales that can be used as an outcome measure in clinical or research settings in rehabilitation. To be used in a research setting, it requires a high methodological quality approach. The aim of this study was to explore the feasibility and reliability of the GAS quality rating system, to ensure that GAS scales used as outcome measures are valid and reliable. Secondary objectives were: (1) to compare goal attainment scores' reliability according to how many GAS levels are described in the scale; and (2) to explore if GAS scorings are influenced by who scores goal attainment. The GAS scales analysed here were set collaboratively by 57 cognitively impaired adults clients and their occupational therapist. Goals had to be achieved within an inpatient one-month stay, during which clients participated in an intervention aimed at improving planning skills in daily life. The GAS quality rating system proved to be feasible and reliable. Regarding GAS scores, interrater reliability was higher when only three of the five GAS levels were described, i.e., "three milestone GAS" (0.74-0.92), than when all five levels were described (0.5-0.88), especially when scored by the clients (0.5 -0.88).

The SPORTS Participation Framework: illuminating the pathway for people with disability to enter into, participate in, and excel at sport

BACKGROUND

Sports participation for people with disabilities exists at the intersection of health, sport, and education sectors. However, no common framework and language exist to describe the stages of sports participation.

OBJECTIVE

To present the background to the SPORTS Participation Framework, and how it can be used to illuminate the path that people with disability may travel to enter into, participate in, and enjoy and excel at all levels of sport.

METHOD

The SPORTS Participation Framework includes six stages drawn from mainstream sports pathways and models used to classify barriers to sports participation for people with disabilities: (S) Screening, goal setting and individual preparation, (P) Practitioner led, peer-group sports interventions, (O) Organised junior entry-point sports programs, (R) Recreational sport (non-competitive), (T) Team competition (school/club representation), and (S) State, National, and International competition.

RESULTS

For each stage, this paper describes the content of sports activities, the context in which they are performed, key stakeholders, barriers to participation, available evidence, and case studies.

CONCLUSIONS

The SPORTS Participation Framework presents a structure to navigate the stages of introducing and promoting lifelong sports participation for people with disabilities. It scaffolds clear communication, governance, and policy across health, sport, and education sectors, and supports clinicians and researchers to address barriers to participation at each stage to improve individual and population-wide participation in sport for people with disabilities.

Increasing participation in computer activities using eye-gaze assistive technology for children with complex needs

PURPOSE

Eye-gaze assistive technology offers children with severe motor and communication difficulties the opportunity to access and control a computer through eye movements. The aim of this study was to examine the impact of eye-gaze assistive technology intervention on participation in computer activities and technology usability among children with complex needs in Taiwan.

MATERIALS AND METHODS

This study involved a multiple baseline design across individuals. The participants were four children aged three to six years with severe motor and communication difficulties and low eye-control skills. The six-month intervention consisted of two collaborative team meetings and 12 individual supports to facilitate the use of eye-gaze assistive technology at home or in educational environments. Participation in computer activities (diversity, frequency, and duration) was repeatedly measured through a computer use diary. Other outcomes included assessments of goal achievements and parents/teachers' ratings on children's performance in computer activities.

RESULTS

The young children increased the diversity of their computer activities and their frequency and duration of computer use from baseline to the intervention phase. The children attained six of eight predefined goals related to play, communication, and school learning. Parents and teachers perceived the children's changes in performance as meaningful.

CONCLUSION

This study strengthens the evidence that eye-gaze assistive technology is useful in everyday contexts for children with complex needs in Taiwan. The findings add knowledge that children with weak eye-control skills increased participation in computer activities as a result of the eye-gaze assistive technology. Implications for RehabilitationEye-gaze assistive technology (EGAT) as an access method to control a computer can provide opportunities for children with severe motor and communication difficulties to participate in computer activities.Children with severe motor and communication difficulties and low eye-control skills with sufficient practice can learn to use EGAT for communication and learning, with support from stakeholders and collaborative service.EGAT could be introduced for children with complex needs at early ages as a means of using computers for play, communication, and school learning, which could be helpful for later education and learning.Stakeholders in educational environments could include EGAT in educational computer systems so that pupils with severe motor and communication difficulties could interact with a computer, thereby enhancing their engagement and learning.

Safety and Feasibility of Functional Repetitive Neuromuscular Magnetic Stimulation of the Gluteal Muscles in Children and Adolescents with Bilateral Spastic Cerebral Palsy

Background: For children and adolescents affected by bilateral spastic cerebral palsy (BSCP), non-invasive neurostimulation with repetitive neuromuscular magnetic stimulation (rNMS) combined with physical exercises, conceptualized as functional rNMS (frNMS), represents a novel treatment approach. Methods: In this open-label study, six children and two adolescents (10.4 ± 2.5 years) with BSCP received a frNMS intervention targeting the gluteal muscles (12 sessions within 3 weeks). Results: In 77.1% of the sessions, no side effects were reported. In 16.7%, 6.3% and 5.2% of the sessions, a tingling sensation, feelings of pressure/warmth/cold or very shortly lasting pain appeared, respectively. frNMS was highly accepted by families (100% adherence) and highly feasible (97.9% of treatment per training protocol). A total of 100% of participants would repeat frNMS, and 87.5% would recommend it. The Canadian Occupational Performance Measure demonstrated clinically important benefits for performance in 28% and satisfaction in 42% of mobility-related tasks evaluated by caregivers for at least one follow-up time point (6 days and 6 weeks post intervention). Two patients accomplished goal attainment for one mobility-related goal each. One patient experienced improvement for both predefined goals, and another participant experienced improvement in one and outreach of the other goal as assessed with the goal attainment scale. Conclusions: frNMS is a safe and well-accepted neuromodulatory approach that could improve the quality of life, especially in regard to activity and participation, of children and adolescents with BSCP. Larger-scaled studies are needed to further explore the effects of frNMS in this setting.

Effect of Active Motor Learning Interventions on Gross Motor Function and Mobility in Children Aged 2 to 6 Years With Bilateral Cerebral Palsy: A Systematic Review and Meta-analysis

PURPOSE

The purpose of this systematic review is to identify evidence-based interventions to promote active motor learning in children aged 2 to 6 years with bilateral cerebral palsy.

SUMMARY OF KEY POINTS

Seven randomized clinical trials of active motor learning interventions targeting gross motor function and mobility were included. Two studies compared context-focused therapy to child-focused therapy. Five studies compared active motor therapy to usual care. Context-focused therapy, child-focused therapy, and active motor therapy were comparable to usual care to improve functional mobility and gross motor function.

CONCLUSIONS AND RECOMMENDATIONS FOR CLINICAL PRACTICE

There are limited active intervention studies targeting gross motor function for young children with bilateral cerebral palsy. The authors recommend consideration of the clinical good practice guidelines, dosage parameters, and improved reporting methods when implementing active motor learning interventions targeting gross motor function and mobility for children with cerebral palsy.

Use of Goal Attainment Scaling to Measure Educational and Rehabilitation Improvements in Children with Multiple Disabilities

With a focus on children with multiple disabilities (CMD), the purpose of this quality improvement project was to elevate educational measurement and practices involving CMD. Using the goal attainment scaling (GAS) methodology, this project was conducted within a public charter school, Pattison's Academy for Comprehensive Education (PACE), focusing on 31 CMD and measuring student improvement and program effectiveness. For 2010-2011 and 2011-2012, improvements were demonstrated for the majority of CMD by meeting or exceeding their goals. Goal attainment scaling was able to capture improvement in educational and rehabilitation goals in the majority of CMD. Goal attainment scaling can provide an indication of a program's effectiveness. The use of GAS in CMD has potential to maximize participation across the school setting where all children in the United States commonly develop and learn skills as well as find meaning.

Gross motor change after inpatient rehabilitation for children with acquired brain injury: A 10-year retrospective review

AIM

To estimate gross motor change in inpatient school-aged children with subacute acquired brain injury (ABI), identify factors associated with gross motor change, and describe inpatient physiotherapy focus.

METHOD

This retrospective chart review involved inpatient children (5-18 years) with subacute ABI who had either two Gross Motor Function Measure (GMFM-88) assessments or one GMFM-88 with another pre/post gross motor outcome measure. Outcome change scores and Goal Attainment Scaling (GAS) T scores were calculated. Regression analyses examined factors predicting gross motor change. GAS goal areas were analysed to determine physiotherapy focus.

RESULTS

Of the 546 charts screened, 266 (118 female) met study criteria. The GMFM-88 was generally administered first, followed by other measures. GMFM-88 (n = 202), Community Balance and Mobility Scale (n = 89), and Six-Minute Walk Test (6MWT) (n = 98) mean change scores were 18.03% (SD 19.34), 17.85% (SD 10.77), and 142.3 m (SD 101.8) respectively. The mean GAS T score was 55.06 (SD 11.50). Lower baseline scores and increased time between assessments were most predictive of greater GMFM-88 change (r ≥ 0.40). Twenty-five percent of GAS goals were ambulation-based.

INTERPRETATION

Appropriate outcome measure selection is integral to detecting gross motor change in pediatric inpatient ABI rehabilitation. Mean change score estimates can be used to compare standard inpatient rehabilitation with new treatment approaches.

Evaluation methods to assess the efficacy of equinovarus foot surgery on the gait of post-stroke hemiplegic patients: A literature review

Introduction

The aim of this study was to realize a systematic review of the different ways, both clinical and instrumental, used to evaluate the effects of the surgical correction of an equinovarus foot (EVF) deformity in post-stroke patients.

Methods

A systematic search of full-length articles published from 1965 to June 2021 was performed in PubMed, Embase, CINAHL, Cochrane, and CIRRIE. The identified studies were analyzed to determine and to evaluate the outcomes, the clinical criteria, and the ways used to analyze the impact of surgery on gait pattern, instrumental, or not.

Results

A total of 33 studies were included. The lack of methodological quality of the studies and their heterogeneity did not allow for a valid meta-analysis. In all, 17 of the 33 studies involved exclusively stroke patients. Ten of the 33 studies (30%) evaluated only neurotomies, one study (3%) evaluated only tendon lengthening procedures, 19 studies (58%) evaluated tendon transfer procedures, and only two studies (6%) evaluated the combination of tendon and neurological procedures. Instrumental gait analysis was performed in only 11 studies (33%), and only six studies (18%) combined it with clinical and functional analyses. Clinical results show that surgical procedures are safe and effective. A wide variety of different scales have been used, most of which have already been validated in other indications.

Discussion

Neuro-orthopedic surgery for post-stroke EVF is becoming better defined. However, the method of outcome assessment is not yet well established. The complexity in the evaluation of the gait of patients with EVF, and therefore the analysis of the effectiveness of the surgical management performed, requires the integration of a patient-centered functional dimension, and a reliable and reproducible quantified gait analysis, which is routinely usable clinically if possible.

Elbow flexion contractures in neonatal brachial plexus palsy: A one-year comparison of dynamic orthosis and serial casting

OBJECTIVE

Elbow flexion contractures are common complications of neonatal brachial plexus palsy, but evidence on how to treat these contractures is weak. This study compared the treatment of elbow flexion contractures using a dynamic orthosis or serial circular casting.

METHODS

A randomized controlled trial was conducted with one-year follow-up. Children with an elbow flexion contracture of ≥30° were treated with either a night-worn dynamic orthosis for one year or serial casting for four weeks followed by night splinting. For pragmatic reasons, some participants were included in an open part of this study, this group was also analyzed separately. Degree of contracture and goal attainment scaling was evaluated at baseline and after 8, 20 and 54 weeks.

RESULTS

55 patients were analyzed in this trial, 32 of whom were randomized to treatment. At one-year follow-up of the randomized group, both dynamic splinting (median -8.5°, interquartile range [IQR] -13.5, -5) and serial casting (median -11.0°, IQR -16, -5) resulted in significant reduction of contracture (P < 0.001). The reduction was significantly greater with serial casting in the first 20 weeks, but not at one-year follow-up (P = 0.683). In the entire cohort, the individual functional goals had been reached in 24 out of 32 cases (80%) of dynamic splinting and 18 out of 23 cases (82%) of serial casting, respectively.

CONCLUSION

The dynamic night orthosis is comparable to serial casting for treating elbow flexion contractures in children with brachial plexus birth injury. We recommend selecting one of these treatment modalities in close consultation with parents and patients.

A randomized crossover study of functional electrical stimulation during walking in spastic cerebral palsy: the FES on participation (FESPa) trial

Background

Spastic cerebral palsy is the most common cause of motor disability in children. It often leads to foot drop or equinus, interfering with walking. Ankle-foot orthoses (AFOs) are commonly used in these cases. However, AFOs can be too restrictive for mildly impaired patients. Functional electrical stimulation (FES) of the ankle-dorsiflexors is an alternative treatment as it could function as a dynamic functional orthosis. Despite previous research, high level evidence on the effects of FES on activities and participation in daily life is missing. The primary aim of this study is to evaluate whether FES improves the activity and participation level in daily life according to patients, and the secondary aim is to provide evidence of the effect of FES at the level of body functions and activities. Furthermore, we aim to collect relevant information for decisions on its clinical implementation.

Methods

A randomized crossover trial will be performed on 25 children with unilateral spastic cerebral palsy. Patients aged between 4 and 18 years, with Gross Motor Functioning Classification System level I or II and unilateral foot drop of central origin, currently treated with AFO or adapted shoes, will be included. All participants will undergo twelve weeks of conventional treatment (AFO/adapted shoes) and 12 weeks of FES treatment, separated by a six-week washout-phase. FES treatment consists of wearing the WalkAide® device, with surface electrodes stimulating the peroneal nerve during swing phase of gait. For the primary objective, the Goal Attainment Scale is used to test whether FES improves activities and participation in daily life. The secondary objective is to prove whether FES is effective at the level of body functions and structures, and activities, including ankle kinematics and kinetics measured during 3D-gait analysis and questionnaire-based frequency of falling. The tertiary objective is to collect relevant information for clinical implementation, including acceptability using the device log file and side effect registration, cost-effectiveness based on quality adjusted life years (QALYs) and clinical characteristics for patient selection.

Discussion

We anticipate that the results of this study will allow evidence-based use of FES during walking in children with unilateral spastic cerebral palsy.

Trial registration

ClinicalTrials.gov: NCT03440632.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12887-021-03037-9.

Regional Differences in School-Based Physical Therapy: Examination of Therapist and Student Characteristics, Service Delivery, Activities, Interventions, and Outcomes

AimsThe aim of this study was to examine regional differences in school-based physical therapy practice focusing on the attributes of the school-based physical therapists and students; service delivery approaches, activities, and interventions; and student outcomes. Recognition of regional practices may decrease unnecessary variations, and assist with therapist clinical decision making and efforts to implement evidence-informed practice.MethodsA secondary data analysis of the PT COUNTS data was performed to compare physical therapist and student attributes; service delivery, activities, and interventions; and student outcomes across the Northeast, Southeast, Central, and Northwest regions of the United States.ResultsDifferences in the physical therapist and student characteristics, service delivery, activities, and interventions existed across the regions. There were no regional differences in outcomes when controlling for student functional level.ConclusionRegional differences in school-based practices may be expected and indicative of the influence of contextual factors including state and local policies and procedures that shape school-based service delivery and the characteristics of the therapists and students. Regional differences in practices may not have been of sufficient clinical magnitude to alter outcomes. Physical therapists can use the findings to reflect upon their individual decision making and practices.

Telehealth Program for Infants at Risk of Cerebral Palsy during the Covid-19 Pandemic: A Pre-post Feasibility Experimental Study

Aim: To verify the effects of a telerehabilitation program for infants at high risk for Cerebral Palsy (CP) during the COVID-19 pandemic.Method: Longitudinal study. Infants were aged 3-18 months corrected age, at risk of developmental delay. The General Movement Assessment or a neurologic examination were performed to identify the risk of CP. Motor function was assessed using the Gross Motor Function Measure-88 (GMFM-88) and the Alberta Infant Motor Scale (AIMS). Caregivers of infants at high risk of CP applied a home-based program supervised by a Physical therapist, five times a week over 12 weeks. The program included guidance for optimal positioning, optimization of goal-directed activities, environmental enrichment, and educational strategies.Results: 100 infants at risk for delayed motor development were recruited. Eighteen infants were classified at high risk of CP, and 10 families completed telerehabilitation (83% final retention rate). No adverse events were reported. Adherence to the telecare program was high (90%). The costs were low. We found increased scores for all dimensions and the total score of the GMFM-88, and the AIMS percentile at the end of the intervention. Most infants presented a clinically significant change for the GMFM-88.Conclusions: The telecare program was feasible.

Decline in Motor Function during the COVID-19 Pandemic Restrictions and Its Recovery in a Child with Cerebral Palsy: A Case Report

Children with cerebral palsy (CP) experience various restrictions owing to their underdeveloped mobility. Home confinement due to the coronavirus disease 2019 pandemic may further increase these restrictions. We report the case of a 7-year-old boy with CP (Gross Motor Function Classification System level IV) whose motor function declined during the period when physical therapy was discontinued due to lockdown, approximately four months. At the end of the home confinement, the patient's ability to maintain a sitting posture and weight-bearing capacity of the lower extremities decreased. His Gross Motor Function Measure total score also decreased from 34.5% to 31.9%. After resuming physical therapy, the patient recovered the function status seen before the discontinuation of physical therapy, but this took almost twice as long as the confinement period. We reaffirm that frequent physical therapy is crucial for maintaining motor function in non-ambulatory children with CP. As a countermeasure for the future, urgent efforts are needed for the development of telerehabilitation.

Goal Attainment Scaling: A Framework for Research and Practice in the Intellectual and Developmental Disabilities Field

Goal setting and attainment is often a targeted outcome in the intellectual and developmental disabilities field; however, standardizing the measurement of attainment of individualized goals is challenging. The purpose of this article is to introduce a four-domain framework that provides a series of questions to research and evaluation teams in planning for the use of goal attainment scaling (GAS) as an outcome measure at the individual or aggregate level. We intend to stimulate discussion and ongoing work to further systematize how GAS is used in (a) intervention research to establish evidence-based practices and (b) practice to assess the extent to which interventions and supports lead to intended outcomes. The goal is to promote a clear planning process to inform data collection on individualized goal attainment outcomes that are rooted in goals and outcomes valued by people with intellectual and developmental disabilities.

Participation-Based Student Goals in School-Based Physical Therapy Practice: Influence on Service Delivery and Outcomes

Aims: Legislation, perspectives, and guidelines support the use of goals that address student participation in school. The purpose of this study was to determine if students with participation-based goals receive school-based physical therapy services differently and demonstrate better outcomes than students with non-participation-based goals.Methods: Secondary data analysis. School-based physical therapists (n = 109) provided services to students (n = 294) over 20 weeks. The physical therapists determined a primary goal for each student and classified this goal based on if it was (n = 181) or was not (n = 113) performed and measured within a school activity or routine (participation-based versus non-participation-based). The physical therapists documented the proportion of services provided within a school activity, on behalf of the student, and consisting of activity-focused functional activities. They also measured goal attainment and assessed participation via the School Function Assessment at the beginning and end of the study.Results: Students with participation-based goals received a significantly greater proportion of services within a school activity than those with non-participation-based goals (p < 0.001). There was no significant difference for the remaining service variables, nor for the outcome variables.Conclusions: Use of participation-based goals may promote school-based physical therapy service delivery within a school activity, thus supporting best practice.

Transactional Model of Parental Adjustment and Caregiving Burden Following a Children's Acquired Disability

OBJECTIVES

Pediatric-acquired disability is often a crossroads in the lives of children and their parents, as they set out to adjust to a new physical impairment. This longitudinal study examined associations between the severity of children's-acquired disability, their parents' caregiver burden and adjustment, and parents' perception of the children's adjustment over time.

METHODS

Participants were parents and medical staff of 140 children with acquired disability, aged 1-18, hospitalized in pediatric or rehabilitation departments. Data were collected about 1 month after diagnosis (T1) and about 4 months later (T2). Parents completed background information, caregiver burden, child, and parental adjustment questionnaires. Medical staff contributed the disability severity indices.

RESULTS

The severity of the child's disability was negatively associated with parents' adjustment and perception of the child's adjustment. Caregiver burden was positively associated with the severity of the disability, and negatively with parents' adjustment and perception of their child's adjustment, at both time points. Over time, the severity of the disability and caregiver burden decreased, and parents' adjustment and perception of the child's adjustment improved. At T2, parents' and children's adjustment were strongly associated.

CONCLUSIONS

The findings revealed the relationship between objective severity indices and caregiver burden. They suggest that parents' adjustment may affect their perception of the child's adjustment to disability, and emphasize the role of parental perceptions over time. Therefore, parents who are less likely to adjust effectively should be identified early on to facilitate professional intervention.

Effects of collaborative consultation using iPad application in school-based occupational therapy: A single-arm pre-post pilot study

INTRODUCTION

This pilot study examined the effect of collaborative consultation with teachers in school-based occupational therapy (SBOT) using iPad application for goal-setting-Aid for Decision-Making in Occupation Choice for School (ADOC-S).

METHOD

A single arm pre-post intervention design was conducted at four preschools in Japan. The participants were 10 preschool teachers (10.5 ± 0.4 years of teaching), and 10 children (3.8 ± 0.4 years old; five boys). The teachers received three collaborative consultations (1 hr for each) from one occupational therapist. Firstly, the occupational therapist conducted an observational assessment of the child's school life, then the teacher and occupational therapist identified occupation-based goals for each child using the ADOC-S. Secondly, the teacher and the occupational therapist developed the graded goals using the Goal Attainment Scale (GAS) and discussed the daily intervention plan for the teachers to conduct. Thirdly, the occupational therapist followed up on the intervention process using GAS. The subjective outcome was measured at 10 point-satisfaction and performance score in each goal using Canadian Occupational Performance Measure (COPM). The observed outcome was measured using GAS and Strengths and Difficulties Questionnaire (SDQ).

RESULTS

All the participants including teachers and children successfully underwent the intervention process. Significant improvement was found pre-post and effect size (ES) was large on the COPM (ES; r = .85-.94), GAS (ES; r = .98-.99) and SDQ (ES; r = .64). All goals (30/30) exceeded expectations of GAS from zero to +2.

CONCLUSION

Although there are some limitations and considerations which need to be resolved for future studies, our results suggest that ADOC-S would help build a rapport with a teacher in SBOT settings, and this collaborative consultation would facilitate a positive outcome.

The responsiveness of goal attainment scaling using just one goal in controlled clinical trials: an exploratory analysis

Background

Goal Attainment Scaling (GAS) is an individualized outcome measure that allows the setting of personalized treatment goals. We compared the responsiveness of GAS when individuals set only one goal instead of the recommended three or more goals.

Methods

We conducted exploratory analyses on data from two randomized controlled trials: the Video-Imaging Synthesis of Treating Alzheimer’s Disease (VISTA) (n = 130); and the Mobile Geriatric Assessment Team (MGAT) (n = 265). Independent t-tests and standardized response means (SRMs) were used to assess responsiveness of one- vs. multiple-goal GAS.

Results

In VISTA, clinician-rated multiple-goal GAS detected higher goal attainment in the intervention group (p = 0.01; SRM = 0.48). One-goal GAS, whether rated by patients or by clinicians, did not detect differences in goal attainment between groups (patient: p = 0.56, SRM = 0.10; clinician: p = 0.10, SRM = 0.29). In MGAT, multiple-goal GAS (outcome goals: p < .001, SRM = 1.29; total goals: p < .001, SRM = 1.52) and one-goal GAS (outcome goals: p < .001, SRM = 0.89; total goals: p < .001, SRM = 0.75), detected significantly higher goal attainment in the intervention group.

Conclusion

One-goal GAS detected significant change in response to a patient-centred, multi-domain care initiative. As such, in similar contexts, one-goal GAS may be an effective means of optimizing personalization and improving GAS feasibility through reduced administration time. However, it is not yet clear if one-goal GAS is responsive in the context of a pharmacological intervention and further research is recommended.

Relationship of School-Based Physical Therapy Services to Student Goal Achievement

PURPOSE

To explore the relationships of school-based physical therapy services to student goal achievement.

METHODS

One hundred nine physical therapists and 296 students participated in a practice-based study. Therapists formatted goals using goal attainment scaling and evaluated goal achievement. Using the School-Physical Therapy Interventions for Pediatrics system, therapists documented services weekly for 20 weeks. Group comparisons and logistic regressions were conducted.

RESULTS

For primary goals, no documented physical therapy services were associated with exceeding goal expectation. For posture/mobility goals, more minutes in self-care activities and services on behalf of the students were associated with exceeding goal expectation; use of cognitive and behavioral training interventions was associated with not exceeding goal expectation (P < .05). For recreation/fitness goals, greater use of functional strength and mobility for playground access and cognitive/behavioral interventions were associated with exceeding goal expectation (P < .05).

CONCLUSION

A limited number of physical therapy services was associated with exceeding goal expectation.

Description of School-Based Physical Therapy Services and Outcomes for Students with Down Syndrome

Students with Down syndrome (DS) receive school-based physical therapy (SBPT), however little data exists regarding services and outcomes. Using a prospective observational cohort study our aim was to explore SBPT activities and interventions, and students' goal achievement of 46 students with DS, tracked by 17 physical therapists (PTs). PTs provided on average 24.0 min/week direct service and 11.6 min/week services on behalf of the student. The most frequent activities employed were physical education/recreation, mobility, and sitting/standing/transitions. The most frequent interventions implemented were neuromuscular, mobility, and musculoskeletal. Although students individually met 69.5% of their primary outcome goals, their achievement could not be explained by total minutes of either direct and minutes on behalf of SBPT, nor minutes spent in most frequent activity.

Goal attainment scaling as an outcome measure in rare disease trials: a conceptual proposal for validation

BACKGROUND

Goal Attainment Scaling (GAS) is an instrument that is intended to evaluate the effect of an intervention by assessing change in daily life activities on an individual basis. However, GAS has not been validated adequately in an RCT setting. In this paper we propose a conceptual validation plan of GAS in the setting of rare disease drug trials, and describe a hypothetical trial where GAS could be validated.

METHODS

We have used the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) taxonomy to deduce which measurement properties of GAS can be evaluated, and how. As individual GAS scores cannot be interpreted outside the context of a RCT, the validation of GAS needs to be done on trial as well as on individual level.

RESULTS

The procedure of GAS consists of three steps. For the step of goal selection (step 1) and definition of levels of attainment (step 2), face validity may be assessed by clinical experts. For the evaluation of the goal attainment (step 3), the inter and intra rater reliability can be evaluated on an individual level. Construct validity may be evaluated by comparison with change scores on other instruments measuring in the same domain as particular goals, if available, and by testing hypotheses about differences between groups. A difference in mean GAS scores between a group who received an efficacious intervention and a control group is an indication of well-chosen goals, and corroborates construct validity of GAS on trial level. Responsiveness of GAS cannot be evaluated due to the nature of the construct being assessed.

CONCLUSION

GAS may be useful as an instrument to assess functional change as an outcome measure in heterogeneous chronic rare diseases, but it can only be interpreted and validated when used in RCTs with blinded outcome assessment. This proposed theoretical validation plan can be used as a starting point to validate GAS in specific conditions.

Daily and Weekly Rehabilitation Delivery for Young Children With Gross Motor Delay: A Randomized Clinical Trial Protocol (the DRIVE Study)

PURPOSE

The proposed project tests the principle that frequency of rehabilitation is an important regulator of therapeutic response in infants.

METHODS

We will randomize 75 infants with cerebral palsy, 6 to 24 months of age and/or Gross Motor Function Classification System levels III to V (higher severity), to determine the short-term and long-term effects of 3 dosing protocols consisting of an identical number of 2-hour sessions of the same motor learning-based therapy applied over a different total number of calendar weeks.

RESULTS AND CONCLUSIONS

The results will inform clinicians, families, and scientists about dosing and will provide needed recommendations for frequency of rehabilitation to optimize motor function and development of young children with cerebral palsy.

Using child- and family-centred goal setting as an outcome measure in residential rehabilitation for children and youth with acquired brain injuries: The challenge of predicting expected levels of achievement

PURPOSE

Collaborative, child- and family-centred goal setting is essential in paediatric, acquired brain injury (ABI) rehabilitation. This study aims to understand which goals children and families prioritize and how accurately therapists predict expected levels of achievement for these goals.

METHODS

Routinely collected Goal Attainment Scale-Light data from 122 children with severe ABI receiving residential rehabilitation were retrospectively analysed. Goals were mapped onto the International Classification of Functioning, Disability and Health. Descriptive analysis of accuracy of therapists' prediction of goal achievement was conducted.

RESULTS

Eight-hundred sixty goals were set: 82% in activities and participation domains, most commonly mobility, self-care, and communication chapters. Forty-six per cent of therapist-set expected levels of achievement for these goals were met at the expected level, and 24% were exceeded. Chapters with the highest prediction accuracy included two environmental chapters and one body structure and function. Accurate prediction of activity and participation goals varied (35% in general tasks and demands to 58.8% in major life areas).

CONCLUSIONS

Children and families prioritize mobility, self-care, and communication during ABI residential rehabilitation. Setting expected outcomes for these goals is challenging, as demonstrated by the variety in accurate prediction rates between and within chapters. Families need to be aware of this uncertainty during goal-setting discussions.

Patient- and caregiver-identified preferences: Dimensions of change in developmental therapy treatment goals

OBJECTIVE

To describe patterns in preferred dimensions of change in therapy goals identified by individuals with developmental disability and their caregivers.

METHODS

A retrospective chart review of Goal Attainment Scaling (GAS) goals for patients aged 2-32 years (n = 124) participating in a program of episodic care was conducted. Dimensions of change were analyzed through a mixed-methods study design. Co-occurrence rates and descriptor-to-code comparisons were computed in order to relate the dimension of change to diagnosis, International Classification of Functioning, Disability, and Health (ICF) goal domain, gender, age, and goal setter.

RESULTS

Decreased level of assistance was the most commonly identified preferred dimension of change, cited in 31.0% of goals. Decreased level of assistance remained the most frequently reported dimension of change in multiple subgroup analyses.

CONCLUSION

Independence is highly valued by parents and individuals with developmental disability. This finding should help guide therapy plans or program development addressing task performance.

To Explore the Validity of Change Scores of the Children's Hand-use Experience Questionnaire (CHEQ) in Children with Unilateral Cerebral Palsy

AIMS

To explore the validity of change scores of the Children's Hand-use Experience Questionnaire (CHEQ).

METHODS

Analysis of the CHEQ included 44 children (15 girls) between 6-16 years (median 9.0; IQR 8-11) with unilateral cerebral palsy, with baseline and post- (two-week intensive) intervention assessments using the Goal Attainment Scale (GAS) as external anchor for change. Hypotheses on the magnitude of expected change were formulated and correlation coefficients and effect sizes calculated. Receiver operating curve analysis was performed and the area under the curve (AUC) calculated to investigate the ability of CHEQ to discriminate between improvement and non-improvement according to GAS.

RESULTS

All hypotheses about the magnitude of change were confirmed supporting longitudinal validity of CHEQ scales to measure change in the perception of bimanual performance. AUCs for the Grasp efficacy and the Time utilization were slightly below, and for the Feeling bothered slightly above the threshold. The latter one accurately discriminating between children that improved and did not improve according to the GAS.

CONCLUSIONS

Evidence was found that CHEQ scales capture change in bimanual performance but with limited accuracy for two out of three scales. The validity of CHEQ change scores needs to be further explored in a wider population.

Goal Setting and Achievement in Individualized Rehabilitation of Younger Total and Unicondylar Knee Arthroplasty Patients: A Cohort Study

OBJECTIVE

To investigate activity goals, intensity and achievement of these activity goals in younger knee arthroplasty (KA) patients, and to identify the differences between total knee arthroplasty (TKA) and unicondylar knee arthroplasty (UKA) patients.

DESIGN

Prospective cohort study.

SETTING

Department of orthopedic surgery and physical therapy practices.

PARTICIPANTS

Patients (N=48) aged 65 years or younger who underwent KA.

INTERVENTION

Rehabilitation with goal attainment scaling (GAS).

MAIN OUTCOME MEASURES

GAS goals for daily life activity, work and leisure time, corresponding metabolic equivalent of task (MET) values, corrected MET values, and GAS scores at 3 and 6 months.

RESULTS

The intensity levels of all 144 formulated activity goals were light in 16% of cases, moderate in 63%, and vigorous in 21%. Intensity levels did not differ between TKA and UKA patients. Following rehabilitation using GAS, 54% of daily life activity goals, 65% of work activity goals, and 46% of leisure time activity goals were attained after 3 months. After 6 months, 91% of daily life activity goals, 93% of work activity goals, and 89% of leisure time activity goals were attained. Goal attainment did not differ between MET intensity levels. Higher goal attainment was achieved in the UKA group (100%) compared with the TKA patients (82%) after 6 months (P<.001).

CONCLUSIONS

Younger patients aim to perform many different activities of varying metabolic intensity levels following KA. After 6 months of rehabilitation using GAS, in these patients attain 91% of their preoperatively formulated activity goals, independent of the MET intensity level. After 6 months, UKA patients attain significantly more activity goals than TKA patients. GAS might be a useful objective outcome measure in evaluating clinical outcomes of individual KA patients.

Improving Self-Management Skills Among People With Spinal Cord Injury: Protocol for a Mixed-Methods Study

Background

Most people with spinal cord injury will develop secondary complications with potentially devastating consequences. Self-management is a key prevention strategy for averting the development of secondary complications and their recurrence. Several studies have shown that self-management programs improve self-management behaviors and health outcomes in individuals living with chronic conditions such as asthma, diabetes, hypertension, and arthritis. Given the burgeoning health care costs related to secondary complications, we developed an alternative electronic health–based implementation to facilitate the development of self-management skills among people with spinal cord injury.

Objective

This study aims to evaluate the efficacy of a self-management app in spinal cord injury populations. The primary outcome is attainment of self-selected, self-management goals. Secondary outcomes include increases in general and self-management self-efficacy and reductions in self-reported health events, health care utilization, and secondary complications related to spinal cord injury. This study also aims to explore how the intervention was implemented and how the app was experienced by end users.

Methods

This study will employ a mix of qualitative and quantitative methods. The quantitative portion of our study will involve a rater-blinded, randomized controlled trial with a stepped wedge design (ie, delayed intervention control group). The primary outcome is successful goal attainment, and secondary outcomes include increases in self-efficacy and reductions in self-reported health events, health care utilization, and secondary conditions related to spinal cord injury. The qualitative portion will consist of semistructured interviews with a subsample of the participants.

Results

We expect that the mobile self-management app will help people with spinal cord injury to attain their self-management goals, improve their self-efficacy, reduce secondary complications, and decrease health care utilization.

Conclusions

If the results are positive, this study will produce credible new knowledge describing multiple outcomes that people with spinal cord injury realize from an app-based self-management intervention and support its implementation in clinical practice.

Trial Registration

ClinicalTrials.gov NCT03140501; http://clinicaltrials.gov/ct2/show/NCT03140501 (Archived by WebCite at http://www.webcitation.org/73Gw0ZlWZ)

International Registered Report Identifier (IRRID)

PRR1-10.2196/11069

Quality of goal setting in pediatric rehabilitation-A SMART approach

BACKGROUND

Setting goals for treatment is often the core of the rehabilitation process. The quality of the set goals has however rarely been evaluated. The aims of this study were therefore to assess the quality of goals set in clinical practice of pediatric rehabilitation using SMART criteria (Specific, Measurable, Achievable, Relevant, and Timed) and to assess if the goals were considered relevant from both a client perspective and expertise perspective.

METHODS

In a retrospective multicase study, a total of 161 goals from 42 children with disabilities (cerebral palsy, n = 22; Down syndrome, n = 16; and developmental disability, n = 4) were assessed. The children were 1.5-5.5 years and had previously participated in goal-directed, activity-focused therapy at four pediatric rehabilitation centers. Collaborative goal setting had been used to define the desired treatment outcome. The quality of the goals was assessed using defined SMART criteria.

RESULTS

Specific: All goals could be reliably linked to International Classification of Functioning, Disability and Health-Children and Youth version chapters within the Activity/Participation domain. Measurable: A total of 75% of the goals were rated as having a well-defined scaling; in 20%, the scaling was less clear, and in 5%, a scaling could not be determined. Achievable: A total of 80% of the goals were attained. Relevant: All goals were set in collaboration with the family and could therefore be considered relevant from a client perspective. Relevancy judged from a professional perspective was strengthened by the fact that age, baseline status, and diagnosis had an influence on the choice of goals. Timed: All goals were set within a specific time frame.

CONCLUSIONS

The goals set in clinical practice showed high quality with respect to the SMART criteria. The most difficult part was the construction of the goal attainment scale. The goals settled in clinical practice were considered relevant from both a client perspective and expertise perspective.

Diagnostic work-up and rehabilitation of cerebral visual impairment in infancy: A case of epileptic perinatal encephalopathy due to KCNQ2-related channelopathy

BACKGROUND

There is evidence that channelopathies are the cause of many different neurological diseases. The epileptic perinatal encephalopathy due to mutation in the KCNQ2 gene is a rare disease involving severe tetraparesis and cerebral visual impairment. Diseases of this kind are associated with severe disability that involves multiple systems and requires accurate genetic diagnosis and early multidisciplinary care once clinical stability is reached.

CASE REPORT

We describe a case of a baby girl with KCNQ2 encephalopathy who came to our observation for rehabilitation at age 2 years and 6 months.

CLINICAL REHABILITATION IMPACT

We stress the importance of a correct clinical, pharmacological and visual diagnosis. Correct diagnosis made it possible to involve the baby girl and her care-giver in an early process of visual rehabilitation lasting 6 months, the effects of which proved to persist at follow-up after more than a year, making it possible to start a useful inter-professional rehabilitation plan.

The methodological application of goal attainment scaling in pediatric rehabilitation research: a systematic review

Purpose: The objectives of this review article were to (1) describe the populations and interventions to which Goal Attainment Scaling (GAS) has been applied in pediatric rehabilitation, (2) summarize the scientific rigor of published studies utilizing GAS as an outcome measure in pediatric rehabilitation, and (3) illustrate the responsiveness of GAS following intervention.Materials and methods: Four electronic databases were searched for English language, human subject studies. Two reviewers independently extracted data, graded evidence, and rated study quality.Results: Fifty-two studies utilizing GAS as an outcome measure within pediatric rehabilitation were included. A majority of studies were characterized as low-level evidence in the Sackett hierarchy (Sackett levels IV-V; 33 of 52). Quality appraisal scores for all reviewed studies ranged from 1-13 points (17 possible points) and averaged 4.71 points. GAS appeared to detect meaningful change in more than 60% of studies.Conclusions: GAS is a clinically useful tool for measuring progress toward goals, but has not been utilized with a high level of methodological rigor in research. Emphasis on reduced variation in administration and interpretation will strengthen the utility of GAS for efficacy and program evaluation in future research.Implications for rehabilitationGoal Attainment Scaling (GAS) can be used across a diversity of interventions and diagnoses as an outcome measure in pediatric rehabilitation.Careful consideration should be used in the study design to standardize administration and scoring of GAS to strengthen the study.Goal Attainment Scaling is responsive to change, and the tool appears to detect meaningful change the majority of the time in pediatric rehabilitation.

Occupational Therapy in an Intensive Comprehensive Aphasia Program: Performance and Satisfaction Outcomes

In this study, we examined the effectiveness of a community-based, occupational therapy intervention situated within an intensive comprehensive aphasia program (ICAP). Occupational therapy interventions addressed goals of participants with chronic stroke and aphasia for improving their satisfaction with and performance of instrumental activities of daily living, social participation, leisure, work, and volunteer activities. Over 3 yr, 19 people with chronic stroke and aphasia participated in a month-long, intensive, interprofessional, community-based program. Significant improvement in participation in valued activities was demonstrated on the Canadian Occupational Performance Measure (p &lt; .01), goal attainment scaling (p &lt; .01), and two domains of the Stroke Impact Scale (p &lt; .05). We conclude that occupational therapy using collaborative goal setting and problem solving as part of an interprofessional team may be an important component to include in ICAPs to address functional participation goals.

Goal setting in paediatric rehabilitation for children with motor disabilities: a scoping review

Objectives:

The three objectives of this scoping review were to (1) identify key conceptual/theoretical frameworks and the extent to which they are used to inform goal setting related to rehabilitation goal setting with children with motor disabilities, (2) describe research that has evaluated goal setting processes and outcomes, and (3) summarize the purposes of goal setting described in paediatric rehabilitation literature.

Methods:

The scoping review process described by Arksey and O’Malley was used to guide article selection and data extraction.

Results:

A total of 62 articles were included in the final review. While the concept of family-centered care was well represented, theoretical frameworks specific to goal setting (i.e. goal setting theory described by Locke and Latham, mastery motivation, social cognitive, personal construct, and self-determination theories) were rarely addressed. No articles reviewed addressed prominent behavior change theory. With the exception of the description of tools specifically designed for use with children, the role of the child in the goal setting process was generally absent or not well described. Few studies ( n = 6) discussed the linkage between goals and intervention strategies explicitly. Only two studies in the review evaluated outcomes associated with goal setting. The primary purpose for goal setting identified in the literature was to develop goals that are meaningful to families ( n = 49).

Conclusion:

The results highlight significant gaps in the literature explicating a sound theoretical basis for goal setting in paediatric rehabilitation and research evaluating the effects of goal qualities and goal setting processes on the achievement of meaningful outcomes.

Comparisons of severity classification systems for oropharyngeal dysfunction in children with cerebral palsy: Relations with other functional profiles

This study aimed to investigate the relationships between various classification systems assessing the severity of oropharyngeal dysphagia and communication function and other functional profiles in children with cerebral palsy (CP). This is a prospective, cross-sectional, study in a university-affiliated, tertiary-care hospital. We recruited 151 children with CP (mean age 6.11 years, SD 3.42, range 3-18yr). The Eating and Drinking Ability Classification System (EDACS) and the dysphagia scales of Functional Oral Intake Scale (FOIS), Swallow Function Scales (SFS), and Food Intake Level Scale (FILS) were used. The Communication Function Classification System (CFCS) and Viking Speech Scale (VSS) were employed to classify communication function and speech intelligibility, respectively. The Pediatric Evaluation of Disability Inventory (PEDI) with the Gross Motor Function Classification System (GFMCS) and the Manual Ability Classification System (MACS) level were also assessed. Spearman correlation analysis to investigate the associations between measures and univariate and multivariate logistic regression models to identify significant factors were used. Median GMFCS level of participants was III (interquartile range II-IV). Significant dysphagia based on EDACS level III-V was noted in 23 children (15.2%). There were strong to very strong relationships between the EDACS level with the dysphagia scales. The EDACS presented strong associations with MACS, CFCS, and VSS, a moderate association with GMFCS level, and a moderate to strong association with each domain of the PEDI. In multivariate analysis, poor functioning in EDACS were associated with poor functioning in gross motor and communication functions.

Effectiveness of Functional Power Training on Walking Ability in Young Children With Cerebral Palsy: Study Protocol of a Double-Baseline Trial

PURPOSE

To evaluate the effect of functional high-velocity resistance (power) training to improve walking ability of young children with cerebral palsy.

METHODS

Twenty-two children with bi- or unilateral spastic cerebral palsy, Gross Motor Function Classification System levels I and II, aged 4 to 10 years will be recruited. A double-baseline design will be used to compare a 14-week functional power training (3 times a week) program with a 14-week usual care period and a 14-week follow-up period. The power exercises will be loaded and performed at 50% to 70% of the maximum unloaded speed. Load will be increased when exercises are performed faster than 70% of the unloaded speed. Primary outcomes will be sprinting capacity (15-m Muscle Power Sprint Test) and goal attainment scaling score of walking-related treatment goals. Secondary outcomes will be walking speed (1-min walk test), endurance (10-m shuttle run test), gross motor function, lower-limb strength, and parent-reported mobility.

Gaze-based assistive technology in daily activities in children with severe physical impairments-An intervention study

OBJECTIVE

To establish the impact of a gaze-based assistive technology (AT) intervention on activity repertoire, autonomous use, and goal attainment in children with severe physical impairments, and to examine parents' satisfaction with the gaze-based AT and with services related to the gaze-based AT intervention.

METHODS

Non-experimental multiple case study with before, after, and follow-up design. Ten children with severe physical impairments without speaking ability (aged 1-15 years) participated in gaze-based AT intervention for 9-10 months, during which period the gaze-based AT was implemented in daily activities.

RESULTS

Repertoire of computer activities increased for seven children. All children had sustained usage of gaze-based AT in daily activities at follow-up, all had attained goals, and parents' satisfaction with the AT and with services was high.

DISCUSSION

The gaze-based AT intervention was effective in guiding parents and teachers to continue supporting the children to perform activities with the AT after the intervention program.

Clinical tools designed to assess motor abilities in children with cerebral palsy

OBJECTIVE

This systematic review aimed to list the tools used by rehabilitation professionals to test motor abilities in children with cerebral palsy (CP), to determine if these tools have psychometric properties specifically measured for CP, and to identify the main characteristics of these tools.

METHOD

Web of Science, PEDro, PubMed/MEDLINE, Science Direct, and SciELO databases were searched to identify the tools. PubMed/MEDLINE was then searched to identify the studies assessing those tools' psychometric properties. The agreement-based standards for the selection of health measurement tools and the Terwee criteria were used to assess the quality and the results of each included study, respectively.

RESULTS

Eighteen tools were identified. The psychometric properties of many of the tools used with children with CP have not been evaluated for this population.

CONCLUSION

The psychometric properties evaluated often have a poor methodological quality of measurement. Overall, we suggest the tools with most empirical support to evaluate children with CP.

A systematic review to investigate the measurement properties of goal attainment scaling, towards use in drug trials

Background

One of the main challenges for drug evaluation in rare diseases is the often heterogeneous course of these diseases. Traditional outcome measures may not be applicable for all patients, when they are in different stages of their disease. For instance, in Duchenne Muscular Dystrophy, the Six Minute Walk Test is often used to evaluate potential new treatments, whereas this outcome is irrelevant for patients who are already in a wheelchair. A measurement instrument such as Goal Attainment Scaling (GAS) can evaluate the effect of an intervention on an individual basis, and may be able to include patients even when they are in different stages of their disease. It allows patients to set individual goals, together with their treating professional. However, the validity of GAS as a measurement instrument in drug studies has never been systematically reviewed. Therefore, we have performed a systematic review to answer two questions: 1. Has GAS been used as a measurement instrument in drug studies? 2: What is known of the validity, responsiveness and inter- and intra-rater reliability of GAS, particularly in drug trials?

Methods

We set up a sensitive search that yielded 3818 abstracts. After careful screening, data-extraction was executed for 58 selected articles.

Results

Of the 58 selected articles, 38 articles described drug studies where GAS was used as an outcome measure, and 20 articles described measurement properties of GAS in other settings. The results show that validity, responsiveness and reliability of GAS in drug studies have hardly been investigated. The quality of the reporting of validity in studies in which GAS was used to evaluate a non-drug intervention also leaves much room for improvement.

Conclusions

We conclude that there is insufficient information to assess the validity of GAS, due to the poor quality of the validity studies. Therefore, we think that GAS needs further validation in drug studies, especially since GAS can be a potential solution when a small heterogeneous patient group is all there is to test a promising new drug.

Trial registration

The protocol has been registered in the PROSPERO international prospective register for systematic reviews, with registration number CRD42014010619. http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42014010619.

Electronic supplementary material

The online version of this article (doi:10.1186/s12874-016-0205-4) contains supplementary material, which is available to authorized users.