[R-sig-ME] 3-level binomial model

David Duffy David.Duffy at qimr.edu.au
Wed Apr 16 04:11:45 CEST 2008

> I computed the school-level and the pupil-level variance like that
> (as described for 2-level models in MlWin manual): I assumed that
> my dependent variable is based on a continuous unobserved variable
> (perfectly valid according to my theoretical model). Therefore, eijk
> follows a logistic distribution with variance pi2/3=3.29. So,

> VPCschool=VARschool/(VARschool+3.29)= 0.17577/(0.17577+3.29)=6.4% and
> VPCpupil=VPCpupil /(VPCpupil+3.29)=0.19977/(0.19977+3.29)=7.3%.

> The reviewers of my paper are not sure if this is the best way to
> do it. They may reject my paper and I worry because I have spent
> 3months!!!! writing it. Any ideas to support my method or to use a
> better one?

Would an IRT model for seven "items" be more to their taste?  I don't think the
substantive conclusions would be much different.

Cheers, David Duffy.
| David Duffy (MBBS PhD)                                         ,-_|\
| email: davidD at qimr.edu.au  ph: INT+61+7+3362-0217 fax: -0101  /     *
| Epidemiology Unit, Queensland Institute of Medical Research   \_,-._/
| 300 Herston Rd, Brisbane, Queensland 4029, Australia  GPG 4D0B994A v

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