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发帖数: 5352 | 1 ☆─────────────────────────────────────☆
westjourney (随心如流水彷如行云 ) 于 (Wed Feb 20 17:51:31 2008) 提到:
问题是我的MODEL A ouput的 degree of freedom是0, 但实际上应该是1...我查了
好几次,都无法知道问题所在. 不过,我的数据有missing data. 牛人帮一下我
谢谢了?
/*Fitting Multilevel Models - unconditional means & growth for children_
learn*/
proc mixed data=long.pp_transpose method=ml;
class ID;
*Unconditional model(model A);
model Child_Play_W= /solution ddfm=bw; *Fixed effects don't need to specify
interecept - SAS estimates by default;
random i |
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