| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | marginal effect of being in the top income quintile compared with the bottom income quintile on resp holdings-stepwise tobit regression results |  |  |  |  |
| 3 |  | 1999 |  | 2012 |  |
| 4 |  | marginal effect | bootstrap standard error | marginal effect | bootstrap standard error |
| 5 | no covariates | 16,010 | 2,866 | 34,486 | 4,885 |
| 6 | add net worth | 6,982 | 2,608 | 13,068 | 3,362 |
| 7 | add parental education | 2,729 | 2,527 | 7,626 | 3,369 |
| 8 | add parental age | 2,996 | 2,566 | 7,520 | 3,386 |
| 9 | add parental marital status | 2,534 | 2,535 | 6,366 | 8,182 |
| 10 | add number of children | 2,995 | 2,608 | 8,182 | 3,481 |
| 11 | add age of youngest child | 3,520 | 2,531 | 7,859 | 3,491 |
| 12 | add age of oldest child | 3,921 | 2,466 | 8,080 | 3,553 |
| 13 | add region | 3,006 | 2,456 | 7,784 | 3,664 |
| 14 | add urban/rural status | 2,941 | 2,443 | 7,691 | 3,654 |
| 15 | no covariates | 16,010 | 2,866 | 34,486 | 4,885 |
| 16 | add parental education | 9,469 | 2,429 | 24,943 | 3,947 |
| 17 | add net worth | 2,729 | 2,527 | 7,626 | 3,369 |

Question: for 1999, how much was the marginal effect of being in the top income quintile?
Answer: 16010

Question: when net worth (less resps) was included, how much was this marginal effect in 1999?
Answer: 6982

Question: how much did the net worth (less resps) account for of the overall gap in the dollar value of resps in 1999?
Answer: 9028

Question: what proportion did the net worth (less resps) account for of the overall gap in the dollar value of resps in 1999?
Answer: 0.563898

Question: how much did adding parental education contribute to the overall gap in the dollar value of resps in 1999?
Answer: 4253

Question: what proportion did adding parental education contribute to the overall gap in the dollar value of resps in 1999?
Answer: 0.265646

Question: how much did net worth (less resps) now accounted for of the overall gap in 1999?
Answer: 0.420987

Question: how much did parental education now accounted for of the overall gap in 1999?
Answer: 0.408557