Linking assessment instruments for brachial plexus injury to the international classification of functioning, disability and health

Danish translation, cultural adaptation and psychometric testing of the Brachial Assessment Tool (BrAT), designed to assess activity limitation in adults with traumatic brachial plexus injuries

PURPOSE

To translate and cross-culturally adapt The Brachial Assessment Tool (BrAT) into Danish and assess its content validity and reproducibility in adults with traumatic brachial plexus injury (BPI).

MATERIAL AND METHODS

Translation followed international guidelines. BrAT(DK) were cognitive tested with 19 adults with traumatic BPI to evaluate cross-cultural understanding, relevance, comprehensiveness and comprehensibility. Content validity and reproducibility were evaluated following the COnsensus-based Standards for the selection of health Measurement INstruments guideline. Participants were recruited from an outpatient hand clinic. Test-retest reliability was assessed using intra-class-correlation coefficient (ICC) and the smallest detectable change (SDC). Internal consistency was evaluated using Cronbach's alpha.

RESULTS

Minor cultural differences were observed in the content validity analysis of BrAT(DK). Cognitive testing revealing no significant issues. All participants found the items relevant and important. 63 participants with traumatic BPI were recruited; 49 completed the retest. ICC values for the sub-scales and the total score ranged from 0.91 to 0.95 (95% CI 0.85 to 0.97). Internal consistency ranged from 0.87 to 0.98. SDC ranged from 4.16 to 9.63 for subscales and 16.01 for the total score.

CONCLUSION

BrAT(DK) appeared to be content valid and reliabel as a measure of activity limitation in adults with traumatic BPI.

Readability of Patient-reported Outcome Measures Used in Plastic Surgery

Background

Patient-reported outcomes are essential to understanding success in plastic surgery procedures, many that aim to improve quality of life. Patient-reported outcome measures (PROMs) should be written at or below the sixth-grade reading level recommended by the American Medical Association. This study aimed to evaluate the readability of plastic surgery PROMs.

Methods

We conducted a literature review to identify validated, commonly used PROMs in plastic surgery. We extracted PROMs' text and instructions and analyzed readability using different approaches that estimate the grade level required to understand. Our primary outcome was the Simple Measure of Gobbledygook (SMOG) index, which detects word complexity and expects 100% comprehension at the grade level rating assigned. We also included the Flesch-Kincaid grade level, Coleman-Liau index, and automated readability index.

Results

Forty-three PROMs met the inclusion criteria. The mean SMOG index was 8.2 (SD = 1.3), indicating an eighth-grade reading level. Mean reading grade levels measured by the Flesch-Kincaid grade level, Coleman-Liau index, and automated readability index ranged from third to sixth grade, although these may underestimate readability difficulties. Only 6 (14%) PROMs had a SMOG index at or below the sixth-grade level. PROM instructions had significantly higher reading levels than the questions/responses for all readability indexes (P < 0.01).

Conclusions

PROMs used in plastic surgery, including the instructions, exceed the reading level recommended by the American Medical Association. This may limit comprehension and accurate completion and compromise validity and reliability. PROMs should be written and designed to be accessible to patients of all literacy levels.

Obstetric Brachial Plexus Palsy and Functional Implications: Which Joint in the Upper Extremity Is More Closely Associated?

Background and Objectives: The objective of this study is to examine the correlation between the active range of motion (ROM) of the affected upper extremity and functional capacity in children with Obstetric Brachial Plexus Palsy (OBPP) who have undergone the modified Hoffer tendon transfer technique. Materials and Methods: The study cohort comprised 52 children with OBPP, aged 4-14 years, who had undergone a shoulder tendon transfer. The ROM was quantified using a goniometer, while functionality was evaluated through the administration of the Brachial Plexus Outcome Measure (BPOM). Results: The study identified significant correlations between the shoulder ROM and the Brachial Plexus Outcome Measure (BPOM). Specifically, shoulder flexion (p = 0.017; r = 0.351) was positively associated with shoulder functionality, while shoulder internal rotation (p = 0.001; r = 0.481) was linked to appearance scores. A significant negative relationship was observed between elbow extension (p < 0.001; r = -0.512) and elbow and forearm activities. Conclusions: The study highlights the necessity of assessing both joint range of motion and body perception for effective treatment and follow-up, to improve the functionality and quality of life for children with OBPP.

ICF Linking and Cognitive Interviewing Are Complementary Methods for Optimizing Content Validity of Outcome Measures: An Integrated Methods Review

Content validity is a fundamental requirement of outcome measures. After reviewing operational needs and existing definitions, content validity we as defined as: the extent to which a measure provides a comprehensive and true assessment of the key relevant elements of a specified construct or attribute across a defined range, clearly and equitably for a stated target audience and context. ICF linkage rules from 2002, 2005, and 2019 have provide increasingly clear processes for describing and evaluating content of outcome measures. ICF Core Sets provide international reference standards of the core constructs of importance for different health conditions. Both are important as reference standards during content validation. To summarize their use as reference standards, the following summary indicators were proposed: (1) Measure to ICF linkage, (2) Measure to (Brief or Comprehensive) Core Set Absolute Linkage, (3) Measure to (Brief or Comprehensive) Core Set Unique Linkage, (4) Core Set Representation, and (5) Core Set Unique Disability Representation. Methods to assess how respondents engage with content are needed to complement ICF-linking. Cognitive interviewing is an ideal method since it used to explore how respondents interpret and calibrate response to individual items on an outcome measure. We proposed a framework for classifying these responses: Clarity/Comprehension, Relevance, Inadequate response definition, Reference Point, Perspective modification, and Calibration Across Items. Our analysis of 24 manuscripts that used ICF linking for content validation since updated linking rules were published found that authors typically used linking to validate existing measures, involved multiple raters, used 2005 linking rules, summarized content at a concept level (e.g., impairment, activity, participation) and/or use core sets as a reference standard. Infrequently, ICF linking was used to create item pools/conceptual frameworks for new measures, applied the full scope of the 2019 linking rules, used summary indicators, or integrated ICF-linking with qualitative methods like cognitive interviews. We conclude that ICF linkage is a powerful tool for content validity during development or validation of PROM. Best practices include use of updated ICF linking rules, triangulation of ICF linking with participant assessments of clarity and relevance preferably obtained using cognitive interview methods, and application of defined summary indicators.