Service Utilization and the Individual, Family, and Neighborhood Characteristics of Children with Disabilities in Illinois. ENDNOTES

09/30/1996

  1. Throughout this report, AABD receipt is used as a proxy variable for SSI receipt. The table below presents the published numbers of children receiving SSI in the state of Illinois in December of each year. The measure in December represents the midpoint of each fiscal year. The AABD figures map nicely to the midpoints even during the period of rapid growth beginning in 1992.

      Number of Children in Illinois Receiving:
    December
    1989
    December
    1990
    December
    1991
    December
    1992
    December
    1993
    Supplemental Security Income (SSI) 12,951 15,387 21,178 31,874 41,225
        July 1, 1989  
    to
    June 30, 1990
      July 1, 1990  
    to
    June 30, 1991
      July 1, 1991  
    to
    June 30, 1992
      July 1, 1992  
    to
    June 30, 1993
      July 1, 1993  
    to
    June 30, 1994
    Aid to the Aged, Blind, and Disabled (AABD)   12,184 14,839 19,986 33,555 43,941
    SOURCE: Social Security Bulletin, Annual Statistical Supplement, 1989-1993
  2. An error was found in the diagnosis field of our medical claims database for services received January 1993-June 1995. The error involved only institutional claims made during the time period, thus we did not expect our diagnosis code selection to be substantially affected. In order to measure the error introduced, we compared the number of children that we identified as disabled using all claims versus all non-institutional claims in fiscal year 1990. We found that using all types of claims in the diagnosis code selection gave us 42,147 Medicaid program participants versus 34,541 using only non-institutional claim records. This represents 82% of the total Medicaid population available to us if the diagnosis code of all claim records could have been used.

  3. The population incidence of 8% is based on 3,338,418 children living in Illinois according to the 1990 U.S. Census.


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