Table 8.
Year Coefficients in Quintile Mobility Regressions
| All | Initial Quintile Location
|
|||||
|---|---|---|---|---|---|---|
| Bottom Fifth | Next to Bottom Fifth | Middle Fifth | Next to Top Fifth | Top Fifth | ||
| All Lag Orders | ||||||
| Year | −.0020* (.0004) | −.0040* (.0008) | −.0028* (.0008) | −.0010 (.0007) | −.0007 (.0007) | −.0020* (.0007) |
| Lag Orders 1–4 | ||||||
| 1969–1980 | −.0013 (.0011) | −.0051* (.0018) | −.0008 (.0019) | .0001 (.0019) | .0006 (.0017) | −.0017 (.0017) |
| 1981–1987 | −.0025* (.0014) | −.0022 (.0023) | −.0038 (.0024) | −.0026 (.0024) | −.0017 (.0021) | −.0026 (.0022) |
| Lag Orders 5+ | ||||||
| 1969–1980 | −.0067* (.0017) | −.0083* (.0035) | −.0035 (.0034) | −.0014 (.0030) | −.0087* (.0034) | −.0108* (.0034) |
| 1981–1987 | −.0005 (.0009) | −.0027 (.0018) | −.0044* (.0018) | −.0004 (.0015) | .0021 (.0018) | .0020 (.0018) |
Notes: Standard errors in parentheses
*
significant at the 10 percent level
Sample sizes are 477 for all-lag-order sample, and 198 and 279 for the 1–4 lag-order and 5+ lag-order samples, respectively.
Dependent variable: fraction of population in the relevant age-year-quintile cell that changed quintiles over the lag orders shown.
Independent variables in addition to time trends: A2, A2−A1, and (A2−A1) squared (see notes to Table 2 for definitions).