I am trying to tabulate mean family income for never-married mothers, age 16-54 from 1979-2014. There is a jump in the data that occurs in the survey years of 2001-2003.
I am using the following code:
foreach ii of local years {
summ ftotval [weight=wtsupp] if age<=54 & age>=16 & nchild>=1 & nchild<=9 & sex==2 & year==`ii’ & nchild_under18>=1 & nchild_under18!=.
}
It results in the following output:
| 1995 | $ 13,065 |
| 1996 | $ 13,687 |
| 1997 | $ 15,130 |
| 1998 | $ 15,920 |
| 1999 | $ 17,286 |
| 2000 | $ 27,380 |
| 2001 | $ 28,817 |
| 2002 | $ 28,232 |
| 2003 | $ 20,093 |
| 2004 | $ 20,334 |
| 2005 | $ 20,900 |
| 2006 | $ 21,916 |
Is there an adjustment in the topcoding of ftotval that creates this jump?