search for: cytoplasm

...elow. Any help is appreciated - I am really new to R so if you can be as detailed as possible in your responses it would be greatly appreciated. Thanks, JT R version: R 2.11.1 GUI 1.34 OS: OS 10.5.8 Here's the script: #readfiles, "a" is nuclear measurements, "b" is cytoplasmic measurements a <- read.table(file.choose(), header=TRUE, sep=",") b <- read.table(file.choose(), header=TRUE, sep=",") #make a new data frame named "new" with important columns new <- data.frame(a$ImageNumber, a$AreaShape_Area, a $Intensity_IntegratedInten...

Dear R members, I am new in using frailty models in survival analyses and am getting some contrasting results when I compare the Wald and likelihood ratio tests provided by the r output. I am testing the survivorship of different sunflower interspecific crosses using cytoplasm (Cyt), Pollen and the interaction Cyt*Pollen as fixed effects, and sub-block as a random effect. I stratified the analysis by developmental stage (G_stageSM) as an ordered factor (two classes). There is a lot of tied deaths in this dataset. Below is the analysis summary. coxph(formula = S...