Erik H Hoyer1, Daniel L Young2, Lisa M Klein3, Julie Kreif4, Kara Shumock4, Stephanie Hiser4, Michael Friedman5, Annette Lavezza4, Alan Jette6, Kitty S Chan7, Dale M Needham8. 1. Department of Physical Medicine and Rehabilitation, Johns Hopkins University; Division of General Internal Medicine, Johns Hopkins University; Outcome After Critical Illness and Surgery (OACIS) Group, Johns Hopkins University School of Medicine, Baltimore, Maryland. 2. Department of Physical Therapy, University of Nevada, Las Vegas, 4505 S Maryland Pkwy, Box 453029, Las Vegas, NV 89154-3029; and Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, Maryland. 3. Department of Neurosciences, Johns Hopkins Hospital, Baltimore, Maryland. 4. Department of Physical Medicine and Rehabilitation, Johns Hopkins University. 5. Department of Physical Medicine and Rehabilitation, Johns Hopkins University; and Outcome After Critical Illness and Surgery (OACIS) Group, Johns Hopkins University School of Medicine. 6. School of Public Health, Health and Disability Research Institute, Boston University, Boston, Massachusetts. 7. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health; and Outcome After Critical Illness and Surgery (OACIS) Group, Johns Hopkins University School of Medicine. 8. Department of Physical Medicine and Rehabilitation, Johns Hopkins University; OACIS Group, Johns Hopkins University School of Medicine; and Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine.
Abstract
Background: The lack of common language among interprofessional inpatient clinical teams is an important barrier to achieving inpatient mobilization. In The Johns Hopkins Hospital, the Activity Measure for Post-Acute Care (AM-PAC) Inpatient Mobility Short Form (IMSF), also called "6-Clicks," and the Johns Hopkins Highest Level of Mobility (JH-HLM) are part of routine clinical practice. The measurement characteristics of these tools when used by both nurses and physical therapists for interprofessional communication or assessment are unknown. Objective: The purposes of this study were to evaluate the reliability and minimal detectable change of AM-PAC IMSF and JH-HLM when completed by nurses and physical therapists and to evaluate the construct validity of both measures when used by nurses. Design: A prospective evaluation of a convenience sample was used. Methods: The test-retest reliability and the interrater reliability of AM-PAC IMSF and JH-HLM for inpatients in the neuroscience department (n = 118) of an academic medical center were evaluated. Each participant was independently scored twice by a team of 2 nurses and 1 physical therapist; a total of 4 physical therapists and 8 nurses participated in reliability testing. In a separate inpatient study protocol (n = 69), construct validity was evaluated via an assessment of convergent validity with other measures of function (grip strength, Katz Activities of Daily Living Scale, 2-minute walk test, 5-times sit-to-stand test) used by 5 nurses. Results: The test-retest reliability values (intraclass correlation coefficients) for physical therapists and nurses were 0.91 and 0.97, respectively, for AM-PAC IMSF and 0.94 and 0.95, respectively, for JH-HLM. The interrater reliability values (intraclass correlation coefficients) between physical therapists and nurses were 0.96 for AM-PAC IMSF and 0.99 for JH-HLM. Construct validity (Spearman correlations) ranged from 0.25 between JH-HLM and right-hand grip strength to 0.80 between AM-PAC IMSF and the Katz Activities of Daily Living Scale. Limitations: The results were obtained from inpatients in the neuroscience department of a single hospital. Conclusions: The AM-PAC IMSF and JH-HLM had excellent interrater reliability and test-retest reliability for both physical therapists and nurses. The evaluation of convergent validity suggested that AM-PAC IMSF and JH-HLM measured constructs of patient mobility and physical functioning.
Background: The lack of common language among interprofessional inpatient clinical teams is an important barrier to achieving inpatient mobilization. In The Johns Hopkins Hospital, the Activity Measure for Post-Acute Care (AM-PAC) Inpatient Mobility Short Form (IMSF), also called "6-Clicks," and the Johns Hopkins Highest Level of Mobility (JH-HLM) are part of routine clinical practice. The measurement characteristics of these tools when used by both nurses and physical therapists for interprofessional communication or assessment are unknown. Objective: The purposes of this study were to evaluate the reliability and minimal detectable change of AM-PAC IMSF and JH-HLM when completed by nurses and physical therapists and to evaluate the construct validity of both measures when used by nurses. Design: A prospective evaluation of a convenience sample was used. Methods: The test-retest reliability and the interrater reliability of AM-PAC IMSF and JH-HLM for inpatients in the neuroscience department (n = 118) of an academic medical center were evaluated. Each participant was independently scored twice by a team of 2 nurses and 1 physical therapist; a total of 4 physical therapists and 8 nurses participated in reliability testing. In a separate inpatient study protocol (n = 69), construct validity was evaluated via an assessment of convergent validity with other measures of function (grip strength, Katz Activities of Daily Living Scale, 2-minute walk test, 5-times sit-to-stand test) used by 5 nurses. Results: The test-retest reliability values (intraclass correlation coefficients) for physical therapists and nurses were 0.91 and 0.97, respectively, for AM-PAC IMSF and 0.94 and 0.95, respectively, for JH-HLM. The interrater reliability values (intraclass correlation coefficients) between physical therapists and nurses were 0.96 for AM-PAC IMSF and 0.99 for JH-HLM. Construct validity (Spearman correlations) ranged from 0.25 between JH-HLM and right-hand grip strength to 0.80 between AM-PAC IMSF and the Katz Activities of Daily Living Scale. Limitations: The results were obtained from inpatients in the neuroscience department of a single hospital. Conclusions: The AM-PAC IMSF and JH-HLM had excellent interrater reliability and test-retest reliability for both physical therapists and nurses. The evaluation of convergent validity suggested that AM-PAC IMSF and JH-HLM measured constructs of patient mobility and physical functioning.
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