+-----------------------------------------+
no group age sex bp0 bp1
-----------------------------------------
1. 1 placebo 35 Male 139 128
2. 2 placebo 44 Female 148 131
3. 3 placebo 50 Female 139 122
4. 4 placebo 48 Male 148 126
5. 5 low 60 Male 135 123
-----------------------------------------
6. 6 low 38 Male 150 130
7. 7 low 31 Female 144 130
8. 8 low 47 Female 150 135
9. 9 high 33 Female 151 137
10. 10 high 21 Female 151 133
-----------------------------------------
11. 11 high 66 Male 153 132
12. 12 high 53 Female 142 126
+-----------------------------------------+
对于上面的数据怎么用reshape命令来做?现在需要关注的变量是bp0和bp1,书上给的方法不行呀。
谢谢。