How to assess and take into account trend in single-case experimental design data.

One of the data features that are expected to be assessed when analyzing single-case experimental designs (SCED) data is trend. The current text deals with four different questions that applied researchers can ask themselves when assessing trend and especially when dealing with improving baseline trend: (a) What options exist for assessing the presence of trend?; (b) Once assessed, what criterion can be followed for deciding whether it is necessary to control for baseline trend?; (c) What strategy can be followed for controlling for baseline trend?; and (d) How to proceed in case there is baseline trend only in some A-B comparisons? Several options are reviewed for each of these questions in the context of real data, and tentative recommendations are provided. A new user-friendly website is developed to implement the options for fitting a trend line and a criterion for selecting a specific technique for that purpose. Trend-related and more general data analytical recommendations are provided for applied researchers.Trial registration: ClinicalTrials.gov identifier: NCT04560777.

Cognitive Orientation to daily Occupational Performance to improve occupational performance goals for children with executive function deficits after acquired brain injury.

AIM: To determine the effectiveness of the Cognitive Orientation to daily Occupational Performance (CO-OP) approach in improving the occupational performance goals of children and young people with executive function deficits after acquired brain injury (ABI) (e.g. etiologies such as stroke, encephalitis, brain tumor, and traumatic brain injury). METHOD: A replicated single-case experimental study using a randomized multiple baseline design across participants and goals was used. Three clusters of four participants (12 participants, nine males and three females, aged 8-16 years) were included. The intervention consisted of 14 individual CO-OP sessions. Each participant chose four goals; three goals were trained during the intervention sessions and a fourth goal served as the control. The Goal Attainment Scale (GAS) was used as a repeated measure to determine goal achievement while the Canadian Occupational Performance Measure (COPM) was used to identify the perceived goal achievement of children, young people, and their parents. RESULTS: For 26 of the 35 trained goals, the intervention led to statistically significant improvements in the GAS. Perceived occupational performance and satisfaction improved significantly for the trained goals (30 out of 35 goals for the COPM performance and satisfaction of participants; 26 out 31 goals for the COPM performance of parents; 24 out of 31 goals for the COPM satisfaction of parents) and were maintained at the follow-up. Almost all COPM control goal results were significant, but these changes were not supported by the GAS measures or the statistical analysis. INTERPRETATION: The generally positive results of this study provide evidence of the benefits of using the CO-OP approach with this population.

Goal Attainment Scaling in rehabilitation: An educational review providing a comprehensive didactical tool box for implementing Goal Attainment Scaling.

CONTEXT: Goal Attainment Scaling (GAS) is a person-centered and collaborative approach, allowing to assess the effectiveness of an intervention on personally relevant goals. However, GAS is not a "scale" but a heterogeneous group of methodologies, including many variations and lack of consensus on high quality GAS. OBJECTIVE: The aim of this communication is to: 1. provide updated didactical information on GAS use in PRM practice and research; 2. increase awareness of GAS methodological challenges; 3. guide use of GAS as an integrated process of rehabilitation after goal setting and; 4. provide updated resources for self-directed learning and extensive supplemental material to increase knowledge and practical skills in GAS use. METHODS: Educational literature review about current GAS applications relevant to PRM fields. RESULTS: Practical advice is provided regarding clinical challenges in GAS: definition of 0 level, time-frame and means employed to attain the goal, dealing with unforeseen pattern of improvement, synthesizing the numerous significations of "SMART" goal acronym to guide best use of GAS, and thinking flexibility on the type of relevant goals that can be set. Challenges with GAS in rehabilitation research are presented in order to promote researcher's and reviewer's awareness on reliable use of GAS and encouraging best-use of GAS.

Exploring the use of the Cognitive Orientation to daily Occupational Performance approach (CO-OP) with children with executive functions deficits after severe acquired brain injury: A single case experimental design study.

Children with acquired brain injury (ABI) often have cognitive and behavioral impairments that affect participation in everyday activities. Among them, executive function (EF) deficits are frequent. Cognitive Orientation to Daily Occupational Performance (CO-OP) is an individualized treatment that teaches cognitive strategies necessary to support successful performance. Few studies have examined the effectiveness of CO-OP in children with EF deficits after ABI. OBJECTIVES: to assess whether the use of CO-OP could be of interest in children with EF deficits after ABI, to improve their occupational performance, their executive functioning in everyday life and their cognitive processes constituting EF. METHODS: This was a single case experimental study with multiple baselines across individuals and behaviors. We included 2 children at least 6 months after severe ABI. The children received 14 individual sessions of the CO-OP intervention. Each child set 3 goals by using the Canadian Occupational Performance Measure; 2 goals were trained and the third was a control goal. The achievement of the goals was measured by using repeated measures of Goal Attainment Scales (GASs). Ecological assessments of EF included the Children's Cooking Task and parent and teacher ratings of the Behavior Rating Inventory of Executive Function (BRIEF) questionnaire. RESULTS: both children improved their performance on both trained goals (and, to a lesser extent, on untrained goals). We found significant improvement on tests of EF and on the BRIEF questionnaire, reflecting executive functioning in everyday life, at home and at school. CONCLUSIONS: these results are encouraging and suggest the feasibility and effectiveness of CO-OP for children with EF deficits after ABI. They should be replicated in a larger number of cases. TRIAL REGISTRATION: ClinicalTrials.gov (NCT04718688).