Transition Events in the Dynamics of Poverty. Appendix B: Tables

09/01/2002

Table B.1—Summary Statistics for Persons at Risk of Entering Poverty
  PSID SIPP
Mean SD 1988 & 1990 1996
Mean SD Mean SD
Change in Economic Status
Change in state unemployment rate, t -0.09 0.00 0.03 0.00 -0.03 0.00
Change in GDP, t (in billions) 164.86 0.29 24.02 0.04 95.95 0.04
Demographic Characteristics of Household Head
Age:
Less than 25 0.05 0.00 0.04 0.00 0.03 0.00
Greater than or equal to 55 0.25 0.00 0.27 0.00 0.26 0.00
Race/Ethnicity:
Black 0.10 0.00 0.09 0.00 0.10 0.00
Hispanic -- -- 0.07 0.00 0.10 0.00
Educational attainment:
Equal to high school 0.34 0.00 0.32 0.00 0.31 0.00
More than high school 0.46 0.00 0.47 0.00 0.56 0.00
Household Composition
Female-headed household (for more than 2 years) 0.13 0.00 0.10 0.00 0.11 0.00
Single male-headed household 0.06 0.00 -- -- -- > --
Number of adults less head and wife 0.36 0.00 0.79 0.00 0.44 0.00
Number of children (less children that enter at t and t-1) 1.10 0.00 1.02 0.00 1.07 0.00
Geographic Characteristics
Region:
Northeast 0.23 0.00 0.21 0.00 0.20 0.00
Midwest 0.29 0.00 0.26 0.00 0.25 0.00
West 0.18 0.00 0.20 0.00 0.21 0.00
Pacific 0.00 0.00 -- -- -- --
Urban area:
MSA 0.58 0.00 0.74 0.00 0.81 0.00
Economic Characteristics
State unemployment rate 6.98 0.01 6.02 0.00 4.47 0.00
GDP (in ten billions) 57.21 0.02 66.11 0.00 85.65 0.00
Spell Information
Left-censored spells (observed) 0.73 0.00 0.90 0.00 0.80 0.00
Number of previous spells (observed) 0.14 0.00 0.07 0.00 0.21 0.00
Time Period
1980-1989 0.56 0.00 -- -- -- --
1990-1996 0.18 0.00 -- -- -- --
1990 SIPP Panel (10/89-8/92) -- -- 0.57 0.00 -- --
1997 -- -- -- -- 0.26 0.00
1998 -- -- -- -- 0.36 0.00
1999 -- -- -- -- 0.38 0.00
Number of person-years/months

217,427

2,034,658

2,211,724

Notes: Table presents weighted means. Summary statistics based on person-years for the PSID and person-months for the SIPP. See Table 4 for weighted means of entry trigger events.

 

Table B.2—Summary Statistics for Persons at Risk of Exiting Poverty
  PSID SIPP
Mean SD 1988 & 1990 1996
Mean SD Mean SD
Change in Economic Status
Change in state unemployment rate, t -0.08 0.01 0.02 0.00 -0.04 0.00
Change in GDP, t (in billions) 163.10 0.94 28.65 0.11 61.29 0.21
Demographic Characteristics of Household Head
Age:
Less than 25 0.13 0.00 0.09 0.00 0.08 0.00
Greater than or equal to 55 0.23 0.00 0.21 0.00 0.21 0.00
Race/Ethnicity:
Black 0.43 0.00 0.27 0.00 0.24 0.00
Hispanic -- -- 0.17 0.00 0.22 0.00
Educational attainment:
Graduate high school (two or more years ago) 0.32 0.00 0.30 0.00 0.31 0.00
Received an associate's degree or higher (two or more years ago) 0.17 0.00 0.22 0.00 0.26 0.00
Household Composition
Female-headed household (for two or more years) 0.47 0.00 0.35 0.00 0.34 0.00
Single male-headed household 0.09 0.00 -- -- -- --
Number of adults (less head and wife) 0.40 0.01 0.53 0.00 0.38 0.00
Number of children (less children that enter at t and t-1) 1.71 0.01 1.89 0.00 1.85 0.00
Geographic Characteristics
Region:
Northeast 0.16 0.00 0.16 0.00 0.17 0.00
Midwest 0.29 0.00 0.23 0.00 0.20 0.00
West 0.10 0.00 0.17 0.00 0.22 0.00
Pacific 0.00 0.00 -- -- -- --
Urban area:
MSA 0.52 0.00 0.66 0.00 0.75 0.00
Economic Characteristics
State unemployment rate 7.34 0.02 6.37 0.00 4.92 0.00
GDP (in ten billions) 58.11 0.07 66.15 0.00 83.48 0.01
Spell Information
Left-censored spell 0.15 0.00 0.56 0.00 0.46 0.00
Number of previous spells (observed) 0.62 0.01 0.35 0.00 0.44 0.00
Time Period
1980-1989 0.61 0.00 -- -- -- --
1990-1996 0.19 0.00 -- -- -- --
1990 SIPP Panel (10/89-8/92) -- -- 0.57 0.00 -- --
1997 -- -- -- -- 0.26 0.00
1998 -- -- -- -- 0.25 0.00
1999 -- -- -- -- 0.25 0.00
Number of person-years/months 35,445 272,639 517,902
Notes: Table presents weighted means. Summary statistics based on person-years for the PSID and person-months for the SIPP. See Table 5 for weighted means of entry trigger events.

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