A paired graph w connected observations

[Mikko Lehtovirta]

Hi,

I know that my question is a banality. However, how to present paired data so that the observations of a person (row) are connected and the data points of a variable (column) appear piled. I want to demonstrate, what happened to individual study subjects’ weights during a 3 month intervention.

Thanks in advance.

Mikko Lehtovirta

* Example generated by -dataex-. To install: ssc install dataex
clear
input long id double(weight_start weight_3m)
31157 59.9 55.7
40958 95.3 84.1
50767 77.1 69.3
60355 79.8 75.2
60566 74.8 71.4
end

[John Mullahy]

Mikko: Perhaps take a look at

help twoway pcspike

For instance, you could do something like this:

gen pre=0
gen post=1
twoway pcspike weight_start pre weight_3m post

after which you could use standard -twoway- options to get your axes, labels, etc. to look the way you'd like.

[Mikko Lehtovirta]

John, thank you very much! I did study pcspike but did not figure out that Stata needs a hint for the start and end points.
Great!
BR Mikko

[Nick Cox]

Search also this forum for mentions of gr0041.

[Mikko Lehtovirta]

Thank you Nick!