TY - JOUR
T1 - The neurological outcome scale for traumatic brain injury (NOS-TBI)
T2 - II. Reliability and convergent validity
AU - McCauley, Stephen R.
AU - Wilde, Elisabeth A.
AU - Kelly, Tara M.
AU - Weyand, Annie M.
AU - Yallampalli, Ragini
AU - Waldron, Eric J.
AU - Pedroza, Claudia
AU - Schnelle, Kathleen P.
AU - Boake, Corwin
AU - Levin, Harvey S.
AU - Moretti, Paolo
PY - 2010/6/1
Y1 - 2010/6/1
N2 - A standardized measure of neurological dysfunction specifically designed for TBI currently does not exist and the lack of assessment of this domain represents a substantial gap. To address this, the Neurological Outcome Scale for Traumatic Brain Injury (NOS-TBI) was developed for TBI outcomes research through the addition to and modification of items specifically relevant to patients with TBI, based on the National Institutes of Health Stroke Scale. In a sample of 50 participants (mean age = 33.3 years, SD = 12.9) ≤18 months (mean = 3.1, SD = 3.2) following moderate (n = 8) to severe (n = 42) TBI, internal consistency of the NOS-TBI was high (Cronbach's alpha = 0.942). Test-retest reliability also was high (ρ = 0.97, p < 0.0001), and individual item kappas between independent raters were excellent, ranging from 0.83 to 1.0. Overall inter-rater agreement between independent raters (Kendall's coefficient of concordance) for the NOS-TBI total score was excellent (W = 0.995). Convergent validity was demonstrated through significant Spearman rank-order correlations between the NOS-TBI and the concurrently administered Disability Rating Scale (ρ = 0.75, p < 0.0001), Rancho Los Amigos Scale (ρ =-0.60, p < 0.0001), Supervision Rating Scale (ρ = 0.59, p < 0.0001), and the FIM™ (ρ =-0.68, p < 0.0001). These results suggest that the NOS-TBI is a reliable and valid measure of neurological functioning in patients with moderate to severe TBI.
AB - A standardized measure of neurological dysfunction specifically designed for TBI currently does not exist and the lack of assessment of this domain represents a substantial gap. To address this, the Neurological Outcome Scale for Traumatic Brain Injury (NOS-TBI) was developed for TBI outcomes research through the addition to and modification of items specifically relevant to patients with TBI, based on the National Institutes of Health Stroke Scale. In a sample of 50 participants (mean age = 33.3 years, SD = 12.9) ≤18 months (mean = 3.1, SD = 3.2) following moderate (n = 8) to severe (n = 42) TBI, internal consistency of the NOS-TBI was high (Cronbach's alpha = 0.942). Test-retest reliability also was high (ρ = 0.97, p < 0.0001), and individual item kappas between independent raters were excellent, ranging from 0.83 to 1.0. Overall inter-rater agreement between independent raters (Kendall's coefficient of concordance) for the NOS-TBI total score was excellent (W = 0.995). Convergent validity was demonstrated through significant Spearman rank-order correlations between the NOS-TBI and the concurrently administered Disability Rating Scale (ρ = 0.75, p < 0.0001), Rancho Los Amigos Scale (ρ =-0.60, p < 0.0001), Supervision Rating Scale (ρ = 0.59, p < 0.0001), and the FIM™ (ρ =-0.68, p < 0.0001). These results suggest that the NOS-TBI is a reliable and valid measure of neurological functioning in patients with moderate to severe TBI.
KW - Neurological Outcome Scale for Traumatic Brain Injury
KW - convergent validity
KW - outcome
KW - reliability
KW - traumatic brain injury
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U2 - 10.1089/neu.2009.1195
DO - 10.1089/neu.2009.1195
M3 - Article
C2 - 20210595
AN - SCOPUS:77953945158
SN - 0897-7151
VL - 27
SP - 991
EP - 997
JO - Journal of neurotrauma
JF - Journal of neurotrauma
IS - 6
ER -
