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Appendix C
Definition of External Variables for Analysis
| Variable Name | Description | Definition |
Sample Distribution |
Source | |
|---|---|---|---|---|---|
|
|
Unweighted | Weighted | |||
| P | 50% of poverty | For county c, P(c) = 1 if less than or equal to 5% of county c families with children is below 50% poverty value | 49% of PSUs | 57% of PSUs | 1990 Census |
| P(c) = 2 otherwise | 51% of PSUs | 43% of PSUs | |||
| S | County Size | For county c, S(c) = 1 if county c population <15 years of age is <25,000 | 32% of PSUs | 82% of PSUs | 1990 Census |
| S(c) = 2 if county c population <15 years of age is 25,000 or more | 68% of PSUs | 18% of PSUs | |||
| SC^ | State or county administered | For county c, SC(c) = 1 if county c is state administered | 64% of PSUs | 54% of PSUs | 1997 NCANDS |
| SC(c) = 2 otherwise | 36% of PSUs | 46% of PSUs | |||
| UR^^ | Urban-rural variable | For county c, UR(c) = 2 if >50% of county c population lives in urban area (Census Bureau definition) | 73% of PSUs | 24% of PSUs | 1990 Census |
| UR(c) = 1 otherwise | 27% of PSUs | 76% of PSUs | |||
^Note: 3 PSUs defined themselves as other than state or county and were excluded from analyses that made that distinction (but were included in all other analyses).
^^Note: According to chi-square tests, these PSU characteristics are not associated, with the exceptions of administration (state/county) and urban/rural (p<.12), and urban/rural and county size (p<.001). Thus, significant associations between urban/rural and other measures may also be partially attributable to other PSU characteristics.
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