请教：stata组内按分位数分成5类并赋值，谢谢

1. _pctile z1m,p(10,25,50,75,90)/*10th 25th 50th 75th 90th百分位值*/
   
2. return list
   
3. g r1=r(r1)
   
4. g r2=r(r2)
   
5. g r3=r(r3)
   
6. g r4=r(r4)
   
7. g r5=r(r5)/*存储对应的百分位值*/
   
8. gen p_z1m=recode(z1m,r1,r2,r3,r4,r5)/*完成分组*/

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