The phrase "a group indicator" is correct and usable in written English.
It can be used when referring to a sign, symbol, or term that signifies or represents a group of people or things.
Example: "In the study, we used a group indicator to categorize participants based on their demographic characteristics."
Alternatives: "a collective marker" or "a group signifier".
This function accepts either (i) a gene expression matrix or an expression set and a group indicator vector, or (ii) an expression set object and a column number, indicating which column of the annotation data to use as the group indicator.
This may not be a complicated exercise when a group indicator variable is available in the dataset.
13I also include a group indicator in the pooled model as an additional variable to avoid having any "residual group differences spilling over into the slope parameters of the pooled model" as recommended by Jann (2008) (pp.6).
The decompositions in the first two columns are based on using coefficients from the male regressions as the reference; while those in the last two columns are based on using coefficients from a pooled regression over males and females in the sample, and including a group indicator as an additional variable, as recommended by Jann (2008).
Group differences were adjusted for possible confounders (age and gender) using linear regression with a group indicator.
HZ incidences in the Cox subpopulation, and the overall study population, were compared by fitting a Poisson regression model with a group indicator as the independent variable.
However, product terms for these pollutants by a medication group indicator were not significant at p < 0.1.
As discussed by Vickers and Altman [ 30], ANCOVA may be used to compare change in one or more groups by predicting follow-up scores from baseline scores and a treatment group indicator.
19 Total costs at follow-up were compared between the two groups using a regression model with the group indicator as the single independent variable.
When there is new activity in a group, an indicator will let you know.
The absolute change in z-scores (|Δ| z) was also used as a continuous variable in some analyses, and its mean (M |Δ| z) was calculated as a group stability indicator.
