INTERPRETING BASIC STATISTICS EXCERPT FROM THE RESEARCH ARTICLE DESCRIBING THE DATA STUDY QUESTIONS Although the prevalence of frailty is high in injured older adults, Factual Questions the process of screening is difficult, because they are in pain and may also have altered consciousness . . . Barriers encountered 1. What is the median score on the VES for the older adults? close to the middle of the full because of injury can preclude the ability to collect important admis- For the proxy respondents? range of the LSA measure? sion information. Thus, a proxy respondent is often called upon to 6. What is the median score on provide information on behalf of the injured older adult . . . The What is the interquartile range the mBI for the older adult aim of this study was to compare self-reported preinjury physical for the older adults? For the proxy respondents? respondents? For the proxy frailty measures with proxy-reported measures. respondents? Three brief physical function screening instruments were 2. For older adult respondents, a VES score of 5 is: 7. Are there any scores on the selected, based on the study's interest in multiple domains mBI that are higher than the (strength, function, mobility, activities of daily living (ADLS)). The A. above the 75th percentile median score? Vulnerable Elders Survey (VES-13) assigns points to 13 items in four B. below the 75th percentile 8. What is the range of possible scores on the mBI? Are the categories (age, self-rated health, common physical tasks, ADLS). 3. What is the range of possible interquartile ranges for the mBI The modified Barthel Index (mBI) assesses 10 ADLS . . . A score of scores on the VES? Does much in this sample in the middle of 20 indicates no disability, and lower scores indicating greater levels bas rosm of the range of possible scores the possible scores on the mBI of dependence. on the VES fall outside of the scale ? The Life Space Assessment (LSA) examines an individual's usual interquartile range for this 9. For an older adult, a score of patterns of mobility during the month preceding assessment [with sample? 27 on the LSA will be in what higher scores indicating greater independence]. 4. On the LSA, is the interquar- linsup balls quartile of scores? fermon tile range similar for the older Table 2. Comparisons of Older Adult and Proxy Scores for Screening motudivelb adult and proxy respondents? A. First Second 16 9051916 Sold 25 Instruments for Physical Frailty 5. For the older adult sample, on the LSA, is the median score C. Third Indeib laron s or Perfect 90% Intraclass D. Fourth 29253 to OFAE ,noid Median Agreement Agreement Correlation (Interquartile ib lemmon 05 02 adsupa risam ed1 Instrument ( neyRange) orit al son (%) isup193 907 Questions for Discussion 10. Consider your answer for 11. Are the medians and interquar- VES (range 0-12) b (00 number 7. How is it that the s.)tile ranges similar between the Older adult 3 ( 1-6 ) d 39 (51) 66 (86) 1 0.88 median is also the highest pos- older adult and proxy respond- Proxy 3 ( 1 -7 ) sible score on a measure? RA HO ents for all three measures? mBI (range 0-20) noit What does this tell us? Older adult 20 (18-20) 48 (62) 69 (89) 0.90 Proxy 20 (19-20) LSA (range 0-120)d NOTE Older adult 62 (39-82)e 27 (35) 1 Maxwell, C. A., Dietrich, M. S., Minnick, A. F., & Mion, L. C. (2015). Preinjury Proxy 55 (71 ) 0.84 68 ( 42-84 ) Physical Function and Frailty in Injured Older Adults: Self-Versus Proxy Responses. Journal of the American Geriatrics Society, 63(7), 1443-1447. Reprinted with permission of John Wiley and Sons, Inc. (2015) Maxwell, C. A., Percentage agreement within 90% of the possible instrument range. Vulnerable Elders Survey (VES) + 1 point, Modified Barthel Index (mBI) + 2 points, Life Space Dietrich, M. S., Minnick, A. F., & Mion, L. C. Assessment (LSA) +12 points. sbiw bris tuo b691 Higher scores indicate greater vulnerability and frailty. fork word ow lishmae Lower scores indicate greater dependency. O "Higher scores indicate greater independence. nsiben Wilcoxon signed rank, z = 2.15, P =.03