Dear Steve,
thank you very much for your great help.
The first model shows a Gener. Chi-Square / DF =1.86, the covariance of the intercept is 0.7072, and the Type III Tests shows significant effect (P<0.0001). In addition, the LSM of the strain*dose are over-estimated.
The second model shows a Gener. Chi-Square / DF =0.97 and the Type III Tests shows also significant effect (P<0.0007). In this case, the LSM seem properly estimated.
Therefore, I would conclude that this latter model better suit to my data, it is not?
Regarding the Satterthwaite option, I do not observe any odd standard error...
One thing that I do not understand very well are the obtained differences between the strains for each dose. The following message is showed:
The LINES display does not reflect all significant comparisons. The following additional pairs are significantly different
However, in the Table "Conservative T Grouping for Dose*Strain Least Squares Means" appear some pairs significantly different from the message with the same letter (for example the control group (dose=0), which mortality is 12.34%, with a high pathogenic strain, whose pathogenic degree is 86,10 %). How can I interpret properly these results?
Thank you very much in advance.
Best regards,
Ana
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