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| Research article summary (published 30 Mar 2009): |
Psychologic factors and risk of mortality after spinal cord injury.
Full Abstract
OBJECTIVE: To identify the association of 2 distinct psychologic constructs, personality and purpose in life (PIL), with risk of early mortality among persons with spinal cord injury (SCI). DESIGN: Prospective cohort study with health data collected in late 1997 and early 1998 and mortality status ascertained in December 2005. SETTING: A large rehabilitation hospital in the southeastern United States. PARTICIPANTS: Adults (N=1386) with traumatic SCI, at least 1 year postinjury. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: We first evaluated the significance of a single psychologic predictor (a total of 6 scales) while controlling for biographic and injury predictors using Cox proportional hazards modeling and subsequently built a comprehensive model based on an optimal group of psychologic variables. RESULTS: There were a total of 224 (16.2%) observed deaths in the full sample. The total number of deaths was reduced to 164 in the final statistical model (of 1128 participants) because of missing data. All 6 psychologic factors were statistically significant in the model that was adjusted for biographic and injury factors, whereas only 3 psychologic factors were retained in the final comprehensive model, including 2 personality scales (Impulsive Sensation Seeking, Neuroticism-Anxiety) and the PIL scale. The final comprehensive model only modestly improved the overall prediction of survival compared with the model with only biographic and injury variables, because the pseudo-R(2) increased from 0.121 to 0.129, and the concordance increased from 0.730 to 0.747. CONCLUSIONS: The results affirm the importance of psychologic factors in relation to survival after SCI.
Author information
Author/s: Krause, James S (JS); Carter, Rickey (R); Zhai, Yusheng (Y); Reed, Karla (K);
Affiliation: College of Health Professions, Medical University of South Carolina, Charleston, SC, USA.
Grants: 1R01 NS 48117-01 A1 (Agency:NINDS NIH HHS)
Journal and publication information
Publication Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.
Journal: Archives of physical medicine and rehabilitation (Arch Phys Med Rehabil), published in United States. (Language: eng)
Reference: 2009-Apr; vol 90 (issue 4) : pp 628-33
Dates: Created 2009/04/06; Completed 2009/04/14;
PMID: 19345779, status: MEDLINE (last retrieval date: 4/14/2009, IMS Date: 14 Apr 2009 00:00:00)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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