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Kaplan-Meier Survival Plot – with at risk table
Credit for the bulk of this code is to Abhijit Dasgupta and the commenters on the original post here from earlier this year. I have made a few changes to the functionality of this which I think warrant...
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Latent class mixed models – with graphics
Foreword Apologies that the output isn’t showing well as far as spacing and alignment is concerned. Am working on fixing that! Background Generally when we have a set of data, we have known groupings....
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Graphing – margins, titles, mtext, workspace
This is a great post, very true, not enough of R’s graphics are well displayed online to really see how to achieve what the often ambiguous ‘help’ information suggests....
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Child health metrics
In analysis of Child Health data, generally z-scores or percentile groupings are used as children do not growth is not linear. The CDC (Center for Disease Control and Prevention) have released tables...
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Mixed Models – Part 1
Very brief. Have been exploring mixed models in R using nlme::lme. Am looking forward to understanding them more, they’re going to be used more and more in years to come I’ve no doubt of that. Here are...
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Automatic descriptive statistic tables
Here is some code I worked on a while back to make the process of generating descriptive tables quicker. This was driven by constantly making data frames for and calculating means or counts for either...
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Colours for R graphs
Here is an extensive list of colours to be used in graphs in R. http://research.stowers-institute.org/efg/R/Color/Chart/
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Calculating Age
Both ‘first’ and ‘second’ need to be date vectors. This is to achieve a calculation of age rounded DOWN in the same way that we say our age (as in we say 17, right up until the day we turn 18)....
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