Earlier today I thought I posted this note, but have not seen any response.

At the risk of being a pesk, I've reposted the message.

thanks

bill

I am trying to run a one way anova with a single random effect.

The independent variable (Group) has three levels.

Nested within each Group are 4 to 5 sites with about 50 - 60 subjects in

each site. Thus I have about 15 sites and an total N of about 1000

I am considering site as a random variable because we have randomly selected

(and assigned to conditions) these sites from a

larger sampling frame.

I am using the following syntax.

UNIANOVA

wgt_tot BY group site

/RANDOM = site

/METHOD = SSTYPE(3)

/INTERCEPT = INCLUDE

/EMMEANS = TABLES(group)

/EMMEANS = TABLES(site)

/EMMEANS = TABLES(group*site)

/PRINT = DESCRIPTIVE

/CRITERIA = ALPHA(.05)

/DESIGN = group site group*site .

The output shows zero degrees of freedom for my "group" variable. I wonder

if anyone has suggestions about what I am doing wrong.

(I have run the same syntax without the interaction and have the same problem).

TIA

Bill

William N Dudley, PhD

Asst Professor

Dept Behavi*Science and Health Education

Rollins School of Public Health

Emory University

Atlanta 30322

Phone 404 727 2447

FAX 404 727 1369