我想为每行生成一个新变量,用以统计出生日期介于1990-2010之间的孩子个数,谢谢
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input int(datec1 datec2 datec3 datec4 datec5)
- 2005 -8 -8 -8 -8
- 2001 -8 -8 -8 -8
- 2005 -8 -8 -8 -8
- 1985 2002 -8 -8 -8
- 2002 -8 -8 -8 -8
- 1999 2006 -8 -8 -8
- 2002 -8 -8 -8 -8
- 2010 2014 -8 -8 -8
- 2004 2009 -8 -8 -8
- 2001 2010 -8 -8 -8
- 2004 -8 -8 -8 -8
- 2006 -8 -8 -8 -8
- 1997 2007 -8 -8 -8
- 2009 -8 -8 -8 -8
- 2000 2008 -8 -8 -8
- 2004 -8 -8 -8 -8
- 1998 2005 -8 -8 -8
- 2003 2006 -8 -8 -8
- 1999 2005 -8 -8 -8
- 1996 2004 -8 -8 -8
- end
复制代码