growth curve

  1. T

    Are effect sizes required when reporting a Linear Mixed Model? If so, how are they calculated?

    I have undertaken an RCT and, given multiple irregular time-point measures of the DV, have used linear mixed models to analyse the results and include moderator/predictor variables. CONSORT is quite emphatic about the reporting of effect sizes. However, SPSS does not produce these for linear...
  2. A

    Can AIC values be combined?

    Hello! I have hunted far and wide on the net in an attempt to answer this. Essentially, I'm trying to combine two AIC scores from different parts of a single data set. I have two models (of the same type: nonlinear least squares fitting a growth curve to population data) that each predict...
  3. J

    Calculate Growth Rate

    I am not a math major and I have not done development in R before so please take this into account when reading my question. I currently having a program written in C# that calculates historical growth rates for companies using the Compounded annual growth rate formula. I then use this...
  4. S

    Vertical-Format longitudinal dataset: Fill in missing values for cases

    Hi all, I am running some growth curve analysis in SPSS. My data is in the vertical/stacked format. There are 6 entries for each person since we measures six points in time. HOWEVER, my model won't run because there is too much missing data. This is because for the demographic data...