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Is it possible to compare two growth curves?
In fact, these procedures cannot differentiate properly the curves, or statistical difference did not meet biological means. For example, the two curves shown in the first attached graph resulted statistically non different, but it is clear that their progress is opposite.
How can growth curves be compared using repeated measure ANOVA?
Bars are 95% confidence intervals. Do not care about the negative 95%CI, because it may be realistic. I already analyzed data by repeated measure ANOVA (GLM proc) in order to obtain final univariate tests per each time point, and by repeated measure ANOVA (Mixed proc) to obtain tests comparing each treatment.
What are the covariance parameters for a growth curve?
Annotated Output: Covariance Parameters UN (1,1) = Variance of the Intercept. Significant, so random intercepts are important to include. UN (2,2) = Variance of the slope for time. Non-significant, which suggests that a more parsimonious model with fixed slopes for time would fit the data better.
How is graphing the interaction used in SPSS?
Graphing the interaction Can graph the interaction using tools meant for moderation in linear regression with this kind of model The parameters in the output are interpreted the same way, they’re just adjusted so that you’re accounting for the clustering due to repeated measurement and missing data http://www.jeremydawson.co. uk/slopes.htm 24.
How can growth curves be compared using repeated measure analysis?
For example, the two curves shown in the first attached graph resulted statistically non different, but it is clear that their progress is opposite. Thus I realized that repeated measure analysis may not be appropriate in this case.
How can growth curves be compared, by Dr.Wilhelm?
As Dr. Wilhelm pointed out, maybe an — more costly, but also more meaningful — option is to set a model for your curves, fit the model (s) for your curves and then go on to discuss parameter estimates. Nothing wrong with repeated measures (rp) ANOVA in my opinion, but maybe a more structured model could do you more good.
How can I statistically compare two curves ( same x values )?
How can I statistically compare two curves (same X values, Different Y values) without using MATLAB or R. I have 200 points of X and Y values and I want to know if the two curves obtained are different from each other. Join ResearchGate to ask questions, get input, and advance your work.