Objective To investigate the incidence of successful rehabilitation, defined as 90 successive days in employment, within individuals with disabilities receiving occupational/vocational training (OVT) service. Method The follow-up records between January 1, 2004 and December 31, 2012 of 5313 individuals aged 15-55 who obtained OVT in the vocational rehabilitation (VR) program of the State of Illinois were examined. Cox regression models were used to analyze the effect of study factors on VR outcomes. Results After controlling for the other factors, males (incidence ratio [IR] 1.11, 95% CI 1.03-1.20), individuals with learning disability (IR 1.14, 95% CI 1.03-1.26), had existing employment (IR 1.40, 95% CI 1.26-1.56), and persons who were referred from educational institutions (IR 1.17, 95% CI 1.01-1.36) or community agencies (IR 1.30, 95% CI 1.14-1.48) appeared to have a relatively high incidence of successful rehabilitation. In contrast, those who lived in densely populated areas (IR ranged from 0.56 to 0.89), had physical disability (IR 0.77, 95% CI 0.68-0.88), had disability of most significant degree (IR 0.85, 95% CI 0.79-0.93), and persons with Supplemental Security Income/Social Security Disability Insurance supports (IR 0.84, 95% CI 0.76-0.94), tended to have a lower incidence of rehabilitation than their counterparts. Conclusion The incidence of successful rehabilitation seems to be related to the demographic, disability, and pre-service characteristics, but not necessarily the provider factors.
Keywords: Disability epidemiology; Occupational training; Survival analysis; Vocational rehabilitation.