INFMRT.DES year infmort afdcprt popul pcinc physic afdcper d90 lpcinc lphysic DC lpopul Obs: 102 1. year 1987 or 1990 2. infmort infant mortality rate 3. afdcprt AFDC participation, 1000s 4. popul population, 1000s 5. pcinc per capita income 6. physic Drs. per 100,000 civilian pop. 7. afdcper percent on AFDC 8. d90 =1 if year == 1990 9. lpcinc log(pcinc) 10. lphysic log(physic) 11. DC =1 for Washington DC 12. lpopul log(popul)