Appendix I: Scope and Methodology
Page 25
GAO-03-210 Welfare Reform
Table 1: Results of Logistic Regression Model of TANF Exits
Model of adults with impairments
Model of adults caring for children with impairments
Variable
Odds ratio
95-percent
confidence interval
Odds ratio
95-percent
confidence interval
Have a disability?
Disabled
0.49
a
(0.29-0.85)
b
b
Not disabled
1.00
(reference group)
b
b
Have a child with a disability?
Child with
disability
b
b
0.44
a
(0.28-0.69)
No child with
disability
b
b
1.00
(reference group)
Age
18-35 as of
7/97
0.85
(0.53-1.35)
1.09
(0.72-1.65)
36-62 as of
7/97
1.00
(reference group)
1.00
(reference group)
Gender
Male
2.21
(0.88-5.59)
1.89
(0.76-4.68)
Female
1.00
(reference group)
1.00
(reference group)
Marital status
Currently
married
1.24
(0.78-1.99)
1.40
(0.86-2.28)
Not currently
married
1.00
(reference group)
1.00
(reference group)
Minority status
Minority
0.40
a
(0.23-0.70)
0.44
a
(0.27-0.73)
White
1.00
(reference group)
1.00
(reference group)
Education
More than
high school
1.01
(0.59-1.71)
1.06
(0.63-1.81)
High school
or less
1.00
(reference group)
1.00
(reference group)
Note: The models also included a set of dummy variables to allow for effects of unmeasured state
characteristics. We have omitted the coefficients associated with the dummy variables to simplify
presentation.
a
Odds ratio is statistically significant at p<=0.05.
b
Not applicable.
Source: GAO’s analysis of SIPP data on disability.
Convention