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st: repeated measures problem
From
"Lachenbruch, Peter" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: repeated measures problem
Date
Tue, 18 Jun 2013 21:43:03 +0000
I have data with groups (repeated measures) and a number of covariates:
tab profid
tab profid
Profile_ID | Freq. Percent Cum.
------------+-----------------------------------
SURV1-A-001 | 59 2.69 2.69
SURV1-A-002 | 59 2.69 5.39
SURV1-A-003 | 59 2.69 8.08
SURV1-A-004 | 59 2.69 10.78
SURV1-A-005 | 59 2.69 13.47
SURV1-A-006 | 59 2.69 16.16
SURV1-A-007 | 59 2.69 18.86
SURV1-A-008 | 59 2.69 21.55
SURV1-A-009 | 59 2.69 24.25
SURV1-A-010 | 59 2.69 26.94
SURV1-A-011 | 59 2.69 29.63
SURV1-A-012 | 59 2.69 32.33
SURV1-A-013 | 59 2.69 35.02
SURV1-A-014 | 59 2.69 37.72
SURV1-A-015 | 59 2.69 40.41
SURV1-P-001 | 87 3.97 44.38
SURV1-P-002 | 87 3.97 48.36
SURV1-P-003 | 87 3.97 52.33
SURV1-P-004 | 87 3.97 56.30
SURV1-P-005 | 87 3.97 60.27
SURV1-P-006 | 87 3.97 64.25
SURV1-P-007 | 87 3.97 68.22
SURV1-P-008 | 87 3.97 72.19
SURV1-P-009 | 87 3.97 76.16
SURV1-P-010 | 87 3.97 80.14
SURV1-P-011 | 87 3.97 84.11
SURV1-P-012 | 87 3.97 88.08
SURV1-P-013 | 87 3.97 92.05
SURV1-P-014 | 87 3.97 96.03
SURV1-P-015 | 87 3.97 100.00
------------+-----------------------------------
Total | 2,190 100.00
I wish to do a repeated measures anova as follows:
. anova q1 profid rater_type cat_tot_score cat_hours NorthAm, repeated(profid)
could not determine between-subject error term; use bse() option
r(421);
When i use the bse(profid) Stata tells me
. anova q1 profid rater_type cat_tot_score cat_hours NorthAm, repeated(profid) bse(profid)
could not determine between-subject basic unit; use bseunit() option
r(422);
If i use the bseunit option I get a similar message
If i xtset and uxe xtreg it seems to work all right, but i'm concerned that i'm getting nonsense.
here is the data directory
storage display value
variable name type format label variable label
------------------------------------------------------------------------------------------------------------------------------------------------------------
rater_id int %10.0g rater_id
prof_type byte %15.0g prof_type
prof_type
rater_type byte %10.0g rater_type
rater_type
cat_tot_score byte %10.0g cat_tot_score
cat_tot_score
cat_specialty byte %18.0g cat_specialty
cat_specialty
cat_hours byte %10.0g cat_hours
NorthAm byte %14.0g NorthAm NorthAm
q1 float %9.0g
q2 float %9.0g
adult float %9.0g
profid long %11.0g profid Profile_ID
Peter A. Lachenbruch,
Professor (retired)
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