search for: circadian

Displaying 4 results from an estimated 4 matches for "circadian".

2008 Sep 03
1
statistical advice
Hello, I am a researcher in sleep and circadian rhythms who is having much trouble deciding on proper statistical analyses. Before I state my question, I provide a brief synopsis of the looming problem; I am interested in activity bout distributions across a 24 hr day. In addition to looking at the number of activity bouts across the day, I am a...
2007 May 14
1
Nicely formatted summary table with mean, standard deviation or number and proportion
...FUN = g, stat.name=c("n", "mean", "sd"))) treatment n mean sd 1 Drug 263 49.9 4.94 2 Placebo 237 50.1 4.97 > > # this works but table is rotated, and it count data has to be > # treated separately. -- Keith Wong PhD candidate Sleep & Circadian Research Group Woolcock Institute of Medical Research email keithw at med.usyd.edu.au Phone +61 2 9515 8981 Fax +61 2 9515 7070 Mail PO Box M77, Missenden Road NSW 2050, Australia
2009 Mar 07
6
using a noisy variable in regression (not an R question)
Hi, This is not an R question, but I've seen opinions given on non R topics, so I wanted to give it a try. :) How would one treat a variable that was measured once, but is known to fluctuate a lot? For example, I want to include a hormone in my regression as an explanatory variable. However, this hormone varies in its levels throughout a day. Nevertheless, its levels differ substantially
2008 Jul 28
12
Segfault with GridCellChoiceEditor
I have a problem. In my application I have a few Grid objects in a Notebook. The Grid objects are populated via GridTableBase. Certain Grid cells need to have a choice interface (I''m artificially enforcing foreign key constraints). All this works to the point where you try to edit the value for that cell. The choice box renders (i.e. the drop down arrow appears) then the application