Patient-Proxy Agreement on the Health-Related Quality of Life One Year After Traumatic Brain Injury

Hei Fen Hwang, Chih Yi Chen, Mau Roung Lin

Research output: Contribution to journalArticle

Abstract

Objective: To examine the level of agreement between patients and their proxies on a measure of health-related quality of life (HRQL) 1 year after traumatic brain injury (TBI). Design: A cross-sectional study. Setting: Four hospitals in Taipei. Participants: Participants (N=176) were patients with TBI (n=88) identified from discharge records of 4 hospitals in Taiwan and family members or friends (n=88) who could answer questions regarding the patient's health and HRQL 1 year after the injury. Interventions: Not applicable. Main Outcome Measures: A health profile of the brief Taiwanese version of the World Health Organization Quality of Life (WHOQOL-BREF) and 2 health utility measures of the time tradeoff (TTO) and standard gamble (SG). Results: Compared with proxy responses, patients provided higher ratings on the domains of the WHOQOL-BREF and lower ratings on the TTO and SG. Intraclass correlation coefficients between patient and proxy ratings varied among the 4 domains of the WHOQOL-BREF, in which levels of agreement were moderate or good for physical capacity (.69) and low for psychological well-being (.45), social relationships (.24), and the environment (.32). Levels of agreement were extremely low for the TTO (0.0) and SG (.10). A profile analysis showed that patients' ratings on the WHOQOL-BREF, on average, were significantly greater than those of their proxies (mean difference, 3.07), with a similar distribution of scatter responses (mean difference, .002) and shape agreement (mean difference, .57). Greater variations in the patient-proxy level of agreement appeared in patients who were younger and had more severe injuries, and also with parent and child proxies. Conclusions: To assess the HRQL of patients with a TBI, the level of patient-proxy agreement was adequate for the physical domain but was lower for the social and environmental domains, and the agreement was very low for the TTO and SG. Furthermore, a patient's age and injury severity, and the patient-proxy' relationship may affect the agreement.

Original languageEnglish
JournalArchives of Physical Medicine and Rehabilitation
DOIs
Publication statusAccepted/In press - 2017

Fingerprint

Proxy
Quality of Life
Traumatic Brain Injury
Health
Wounds and Injuries
Hospital Records
Taiwan
Cross-Sectional Studies
Outcome Assessment (Health Care)
Psychology

Keywords

  • Brain injuries, traumatic
  • Caregivers
  • Patient preference
  • Proxy
  • Quality of life
  • Rehabilitation

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

Cite this

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title = "Patient-Proxy Agreement on the Health-Related Quality of Life One Year After Traumatic Brain Injury",
abstract = "Objective: To examine the level of agreement between patients and their proxies on a measure of health-related quality of life (HRQL) 1 year after traumatic brain injury (TBI). Design: A cross-sectional study. Setting: Four hospitals in Taipei. Participants: Participants (N=176) were patients with TBI (n=88) identified from discharge records of 4 hospitals in Taiwan and family members or friends (n=88) who could answer questions regarding the patient's health and HRQL 1 year after the injury. Interventions: Not applicable. Main Outcome Measures: A health profile of the brief Taiwanese version of the World Health Organization Quality of Life (WHOQOL-BREF) and 2 health utility measures of the time tradeoff (TTO) and standard gamble (SG). Results: Compared with proxy responses, patients provided higher ratings on the domains of the WHOQOL-BREF and lower ratings on the TTO and SG. Intraclass correlation coefficients between patient and proxy ratings varied among the 4 domains of the WHOQOL-BREF, in which levels of agreement were moderate or good for physical capacity (.69) and low for psychological well-being (.45), social relationships (.24), and the environment (.32). Levels of agreement were extremely low for the TTO (0.0) and SG (.10). A profile analysis showed that patients' ratings on the WHOQOL-BREF, on average, were significantly greater than those of their proxies (mean difference, 3.07), with a similar distribution of scatter responses (mean difference, .002) and shape agreement (mean difference, .57). Greater variations in the patient-proxy level of agreement appeared in patients who were younger and had more severe injuries, and also with parent and child proxies. Conclusions: To assess the HRQL of patients with a TBI, the level of patient-proxy agreement was adequate for the physical domain but was lower for the social and environmental domains, and the agreement was very low for the TTO and SG. Furthermore, a patient's age and injury severity, and the patient-proxy' relationship may affect the agreement.",
keywords = "Brain injuries, traumatic, Caregivers, Patient preference, Proxy, Quality of life, Rehabilitation",
author = "Hwang, {Hei Fen} and Chen, {Chih Yi} and Lin, {Mau Roung}",
year = "2017",
doi = "10.1016/j.apmr.2017.05.013",
language = "English",
journal = "Archives of Physical Medicine and Rehabilitation",
issn = "0003-9993",
publisher = "W.B. Saunders Ltd",

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TY - JOUR

T1 - Patient-Proxy Agreement on the Health-Related Quality of Life One Year After Traumatic Brain Injury

AU - Hwang, Hei Fen

AU - Chen, Chih Yi

AU - Lin, Mau Roung

PY - 2017

Y1 - 2017

N2 - Objective: To examine the level of agreement between patients and their proxies on a measure of health-related quality of life (HRQL) 1 year after traumatic brain injury (TBI). Design: A cross-sectional study. Setting: Four hospitals in Taipei. Participants: Participants (N=176) were patients with TBI (n=88) identified from discharge records of 4 hospitals in Taiwan and family members or friends (n=88) who could answer questions regarding the patient's health and HRQL 1 year after the injury. Interventions: Not applicable. Main Outcome Measures: A health profile of the brief Taiwanese version of the World Health Organization Quality of Life (WHOQOL-BREF) and 2 health utility measures of the time tradeoff (TTO) and standard gamble (SG). Results: Compared with proxy responses, patients provided higher ratings on the domains of the WHOQOL-BREF and lower ratings on the TTO and SG. Intraclass correlation coefficients between patient and proxy ratings varied among the 4 domains of the WHOQOL-BREF, in which levels of agreement were moderate or good for physical capacity (.69) and low for psychological well-being (.45), social relationships (.24), and the environment (.32). Levels of agreement were extremely low for the TTO (0.0) and SG (.10). A profile analysis showed that patients' ratings on the WHOQOL-BREF, on average, were significantly greater than those of their proxies (mean difference, 3.07), with a similar distribution of scatter responses (mean difference, .002) and shape agreement (mean difference, .57). Greater variations in the patient-proxy level of agreement appeared in patients who were younger and had more severe injuries, and also with parent and child proxies. Conclusions: To assess the HRQL of patients with a TBI, the level of patient-proxy agreement was adequate for the physical domain but was lower for the social and environmental domains, and the agreement was very low for the TTO and SG. Furthermore, a patient's age and injury severity, and the patient-proxy' relationship may affect the agreement.

AB - Objective: To examine the level of agreement between patients and their proxies on a measure of health-related quality of life (HRQL) 1 year after traumatic brain injury (TBI). Design: A cross-sectional study. Setting: Four hospitals in Taipei. Participants: Participants (N=176) were patients with TBI (n=88) identified from discharge records of 4 hospitals in Taiwan and family members or friends (n=88) who could answer questions regarding the patient's health and HRQL 1 year after the injury. Interventions: Not applicable. Main Outcome Measures: A health profile of the brief Taiwanese version of the World Health Organization Quality of Life (WHOQOL-BREF) and 2 health utility measures of the time tradeoff (TTO) and standard gamble (SG). Results: Compared with proxy responses, patients provided higher ratings on the domains of the WHOQOL-BREF and lower ratings on the TTO and SG. Intraclass correlation coefficients between patient and proxy ratings varied among the 4 domains of the WHOQOL-BREF, in which levels of agreement were moderate or good for physical capacity (.69) and low for psychological well-being (.45), social relationships (.24), and the environment (.32). Levels of agreement were extremely low for the TTO (0.0) and SG (.10). A profile analysis showed that patients' ratings on the WHOQOL-BREF, on average, were significantly greater than those of their proxies (mean difference, 3.07), with a similar distribution of scatter responses (mean difference, .002) and shape agreement (mean difference, .57). Greater variations in the patient-proxy level of agreement appeared in patients who were younger and had more severe injuries, and also with parent and child proxies. Conclusions: To assess the HRQL of patients with a TBI, the level of patient-proxy agreement was adequate for the physical domain but was lower for the social and environmental domains, and the agreement was very low for the TTO and SG. Furthermore, a patient's age and injury severity, and the patient-proxy' relationship may affect the agreement.

KW - Brain injuries, traumatic

KW - Caregivers

KW - Patient preference

KW - Proxy

KW - Quality of life

KW - Rehabilitation

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