unbalanced

  1. G

    How to run an unbalanced Permanova in Primer

    Dear all, I have data on disease occurrences in coral reefs. I have the following factors: Exposure (fixed, two levels: outer and inner) and Site (random and nested in Exposure with three levels for outer and two levels for inner). At each site, I have four transects except at one of the...
  2. J

    what stats to use?

    Dear All, As I am not experienced in stats I would like to ask for some stats suggestions for a study. study one: control impact with one impacted site and one reference site. Two species and biometrics taken. I need to see if the the impacted site increases biometrics. study two...
  3. J

    Unbalanced ANOVA with missing treatment/factor combinations

    Hello, I am analyzing results from an experiment with a single response variable, which is attack speed of a fish predator. The two independent variables are temperature (three levels) and prey size (two levels). Each treatment/factor has the same number of replicates, but I have no data for...
  4. J

    ANOVA REML AND REGRESSION - When to use

    Dear All I am trying to get my head around when to use ANOVA when to use regeression and when to use REML. As I understand REML can be used in situations where you would normally use ANOVA (2 variables?) but for unbalanced / correlated data, or where you would use linear regression but have...
  5. A

    SAS Macro Variable Quoting

    I need help with macro variable quoting. I have a SAS macro variable that has a list of values separated by | as below. The values are gathered from a SAS Dataset. Proc Sql; Select Distinct Strip(Diseasename) into :Dlist Separated by '|' From Dis_List; Quit; %Put %Bquote(&DList)...
  6. M

    Methods in longitudinal analyses with different follow-up times

    Hi all, I am new to this forum, but registered because I am looking for the right method to use in the analyses of two different projects, both longitudinal with different follow-up times for patients. I did some research into the study methods, but wasn't sure and wanted to check on this...