Abstract
Background
A version of the Life-Space Assessment in persons with cognitive impairment (LSA-CI) has recently been developed.
Aims
To establish a cut-off value for the newly developed Life-Space Assessment in persons with cognitive impairment (LSA-CI).
Methods
In a cross-sectional study including 118 multimorbid, older persons with cognitive impairment, life-space mobility (LSM) was documented by the LSA-CI. The analysis was rationalized by Global Positioning System (GPS)-based measures of spatial distance from home. A receiver-operating characteristic (ROC) curve was created and the cut-off point for the LSA-CI was identified with the Youden’s Index.
Results
ROC curve analysis indicated a critical value of 26.75 (within a range of 0–90) to differentiate between low and high LSM with a sensitivity of 78.1% and specificity of 84.2%.
Discussion
Diagnostic interpretation of the ROC curves revealed that low and high LSM groups can be differentiated with the proposed cut-off.
Conclusions
The proposed LSA-CI cut-off score can be recommended to tailor clinical interventions and evaluate change over time.
References
Baker PS, Bodner EV, Allman RM (2003) Measuring life-space mobility in community-dwelling older adults. J Am Geriatr Soc 51:1610–1614. https://doi.org/10.1046/j.1532-5415.2003.51512.x
Ullrich P, Werner C, Bongartz M et al (2018) Validation of a modified life-space assessment in multimorbid older persons with cognitive impairment. Gerontologist. https://doi.org/10.1093/geront/gnx214
Sawyer P, Allman R (2010) Resilience in mobility in the context of chronic disease and aging. In: Keyes PFC (ed) New frontiers in resilient aging: life-strengths and well-being in late life. Cambridge University Press, Cambridge, pp 310–339. https://doi.org/10.1017/CBO9780511763151.014
Portegijs E, Rantakokko M, Viljanen A et al (2016) Identification of older people at risk of ADL disability using the life-space assessment: a longitudinal cohort study. J Am Med Dir Assoc 17:410–414. https://doi.org/10.1016/j.jamda.2015.12.010
Shimada H, Sawyer P, Harada K et al (2010) Predictive validity of the classification schema for functional mobility tests in instrumental activities of daily living decline among older adults. Arch Phys Med Rehabil 91:241–246. https://doi.org/10.1016/j.apmr.2009.10.027
Tung JY, Rose RV, Gammada E et al (2014) Measuring life space in older adults with mild-to-moderate Alzheimer’s disease using mobile phone GPS. Gerontology 60:154–162. https://doi.org/10.1159/000355669
Rutjes AW, Reitsma JB, Coomarasamy A et al (2007) Evaluation of diagnostic tests when there is no gold standard. A review of methods. Health Technol Assess (Winch Engl) 11:iii, ix-51
Jacobs JM, Cohen A, Hammerman-Rozenberg R et al (2008) Going outdoors daily predicts long-term functional and health benefits among ambulatory older people. J Aging Health 20:259–272. https://doi.org/10.1177/0898264308315427
Rantakokko M, Iwarsson S, Vahaluoto S et al (2014) Perceived environmental barriers to outdoor mobility and feelings of loneliness among community-dwelling older people. J Gerontol Ser A Biol Sci Med Sci 69:1562–1568. https://doi.org/10.1093/gerona/glu069
Shimada H, Ishizaki T, Kato M et al (2010) How often and how far do frail elderly people need to go outdoors to maintain functional capacity? Arch Gerontol Geriatr 50:140–146. https://doi.org/10.1016/j.archger.2009.02.015
Szanton SL, Roberts L, Leff B et al (2016) Home but still engaged: participation in social activities among the homebound. Qual Life Res Int J Qual Life Asp Treat Care Rehabilit 25:1913–1920. https://doi.org/10.1007/s11136-016-1245-2
Rantakokko M, Iwarsson S, Kauppinen M et al (2010) Quality of life and barriers in the urban outdoor environment in old age. J Am Geriatr Soc 58:2154–2159. https://doi.org/10.1111/j.1532-5415.2010.03143.x
Folstein MF, Folstein SE, McHugh PR (1975) “Mini-mental state”. A practical method for grading the cognitive state of patients for the clinician. J Psychiatr Res 12:189–198. https://doi.org/10.1016/0022-3956(75)90026-6
Guralnik JM, Simonsick EM, Ferrucci L et al (1994) A short physical performance battery assessing lower extremity function: association with self-reported disability and prediction of mortality and nursing home admission. J Gerontol 49:M85–M94. https://doi.org/10.1093/geronj/49.2.M85
Landers MR, Durand C, Powell DS et al (2011) Development of a scale to assess avoidance behavior due to a fear of falling: the fear of falling avoidance behavior questionnaire. Phys Ther 91:1253–1265. https://doi.org/10.2522/ptj.20100304
Zweig MH, Campbell G (1993) Receiver-operating characteristic (ROC) plots: a fundamental evaluation tool in clinical medicine. Clin Chem 39:561–577
Swets JA (1988) Measuring the accuracy of diagnostic systems. Science 240:1285–1293
Fluss R, Faraggi D, Reiser B (2005) Estimation of the Youden Index and its associated cutoff point. Biom J Biom Z 47:458–472
Funding
This work was funded by the Social and Private Long-Term Care Insurance (Soziale und Private Pflegeversicherung) and the Municipal Association for Youth and Social Affairs in Baden-Württemberg (Kommunalverband für Jugend und Soziales Baden-Württemberg) (Grant no: 80221-208-009-01-01). Funders had no role in study concept and design, data collection, analysis and interpretation, and preparation of the manuscript.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Ethical approval
All procedures performed in studies involving human participants were in accordance with the ethical standards of the national research committee and with the 1964 Helsinki declaration and its later amendments.
Informed consent
Written informed consent was obtained from all individual participants included in the study.
Rights and permissions
About this article
Cite this article
Ullrich, P., Werner, C., Eckert, T. et al. Cut-off for the Life-Space Assessment in persons with cognitive impairment. Aging Clin Exp Res 31, 1331–1335 (2019). https://doi.org/10.1007/s40520-018-1062-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40520-018-1062-2