Re: [R] Repeated measures lme or anova

2008-07-06 Thread hadley wickham
On Sun, Jul 6, 2008 at 7:46 AM, Martin Henry H. Stevens <[EMAIL PROTECTED]> wrote: > Hi John, > 1. I do not know why you remove the intercept in the lme model, but keep it > in the aov model. > 2. The distributional assumptions are shot --- you can't run any sort of > normal model with these data.

Re: [R] Repeated measures lme or anova

2008-07-06 Thread Martin Henry H. Stevens
Hi John, 1. I do not know why you remove the intercept in the lme model, but keep it in the aov model. 2. The distributional assumptions are shot --- you can't run any sort of normal model with these data. You might consider some sort of binomial (metabolite detected vs. not detected). Hank

[R] Repeated measures lme or anova

2008-07-04 Thread John Coulthard
Hi As I can't find an example of my data structure I'd like some advice on which is the most appropriate test for significant effects. If I should be using either lme or anova, is the relevant example below the best/correct way to do the test? The Data... 2 groups of patients (5 in GroupA, 7