The percentage of applicants to a college for deaf students who were on SSI as children increased over time, for a low of 10% in 1982 to more than 41% in 2000. However, the differences in the probability of graduation from NTID between deaf SSI children and deaf applicants who were not SSI children did not change accordingly. The probability of graduation for SSI children who applied to NTID was 13.5 percentage points lower than for those who were not SSI children. The estimated disparity indicates that targeting college retention programs toward SSI children may be an effective way to improve overall graduation rates.
Dirmyer, R. & Schley, S. 2008 (Sept. 14-17). Dummy Variables and the Relationship of Deaf and Hearing Growth Using SAS/GRAPH. Presented at NESUG 2008, Pittsburgh, PA
Weathers II, R. R., Walter, G., Schley, S., Hennessey, J., Hemmeter, J. & Burkhauser, R. V. 2007. How Postsecondary Education Improves Adult Outcomes for Supplemental Security Income Children with Severe Hearing Impairments. Social Security Bulletin, 67(2), 101-131. http://www.ssa.gov/policy/docs/ssb/v67n2/v67n2p101.pdf
Martino, P., Schley, S. & Dirmyer, R. 2007(April 16-19). Paper 091-2007: Graphing Longitudinal Data: Deaf Children in the “Children of the National Longitudinal Survey of Youth”. SAS Global Forum, Orlando, FL.