>>Update [2017/08/29]: Check out this nice automated Stata-to-CONSORT flowchart program: https://github.com/IsaacDodd/flowchart/ <<
The CONSORT flowchart for randomised controlled trials has become a standard requirement when publishing medical and social science research (see http://www.consort-statement.org/).
For me it is a regular powerpointpain (e.g. here: http://onlinelibrary.wiley.com/enhanced/doi/10.1111/jsr.12135/). I always thought it would be nice to be able to populate the flow diagram automatically.
I recently figured out how to get Stata to draw stuff. Thus here the flow chart draw by Stata (12.0).
CONSORT flowchart in Stata (pdf, high resolution)
And here the do-file, which produced the flowchart, nothing fancy, but maybe helpful:
*Definition of boxes and line styles. local osmall = ", box margin(small) size(vsmall)" local omain = ", box margin(small)" local bc = ", lwidth(medthick) lcolor(black)" local bca = ", lwidth(medthick) lcolor(black) mlcolor(black) mlwidth(medthick) msize(medlarge)" *Drawing the graph twoway /// 1) PCI to draw a box 2) PIC horizontal lines 3) pcarrowi: connecting arrows. pci 5.2 0 5.2 6 `bc' || pci 5.2 6 0 6 `bc' || pci 0 6 0 0 `bc' || pci 0 0 5.2 0 `bc' /// || pci 3 1.5 3 4.5 `bc' || pci 1.9 1.5 1.9 4.5 `bc' || pci 0.9 1.5 0.9 4.5 `bc' /// || pcarrowi 5 3 3.5 3 `bca' /// || pcarrowi 4.35 3 4.35 3.35 `bca' /// || pcarrowi 3.5 3 3.2 3 `bca' /// || pcarrowi 3 3 2.1 3 `bca' /// || pcarrowi 1.9 3 1.1 3 `bca' /// , /// Text placed using "added text" [ACHTUNG sizes change with content] text(5 3 "Assessed for eligibility (n= )" `omain') /// text(4.35 4.5 "Excluded ""(n= )" /// "Not meeting inclusion criteria " /// "(n= )" /// "Declined to participate " /// "(n= )" /// "Other reasons""(n= )" `osmall') /// text(3.5 3 "Randomized (n= )" `omain') /// text(3.1 3 "Allocation" ) /// text(2.5 1.5 "ACTIVE" /// "Allocated to intervention""(n=)" /// "Received allocated intervention ""(n=XXX)" /// "Did not receive allocated intervention " /// "(give reasons)" /// "(n= )" `osmall') /// text(2.5 4.5 "CONTROL" /// "Allocated to intervention" /// "(n= )""Received allocated intervention " /// "(n= )" /// "Did not receive allocated intervention " /// "(give reasons)" /// "(n= )" `osmall') /// text(2 3 "Follow-Up" ) /// text(1.5 1.5 "Lost to follow-up" /// "(give reasons)" /// "(n= )" /// "Discontinued intervention " /// "(give reasons)" /// "(n= )" `osmall') /// text(1.5 4.5 "Lost to follow-up" /// "(give reasons)" /// "(n= )" /// "Discontinued intervention " /// "(give reasons)" /// " (n= )" `osmall') /// text(1 3 "Analysis" ) /// text(0.5 1.5 "Analysed" /// "(n= )" /// "Excluded from analysis" /// "(give reasons)" /// "(n= )" `osmall') /// text(0.5 4.5 "Analysed" /// "(n= )" /// "Excluded from analysis " /// "(give reasons)" /// "(n= )" `osmall') /// legend(off) /// xlabel("") ylabel("") xtitle("") ytitle("") /// plotregion(lcolor(black)) /// graphregion(lcolor(black)) xscale(range(0 6)) /// xsize(2) ysize(3) /// A4 aspect ratio title("Consort Flowchart") /// note("{bf: Adapted from:} www.consort-statement.org/consort-statement/flow-diagram" /// , size(tiny))
Anyone who fancies can just put a local to automatically fill the flowchart.
sum participants if(group == "control") local allocated control = r(N)
Thanks for this! very well done- but I have one question. How do I change the background color of the boxes?
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Hi Iris,
you can change the background colour in the locals “osmall” and “omain”, by adding this option [fcolor(blue)] replace “blue” with any colour you find in Stata’s colour styles: http://www.stata.com/manuals13/g-4colorstyle.pdf
This example shows you how it works, just copy it into your Stata:
*–Start–
sysuse auto.dta
scatter price mpg, text(500 30 “Assessed for eligibility (n= )”, box fcolor(blue) color(white))
*–End–
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This is great! I changed the code to a 4 arm trial..but all the text boxes are overlapping. Any ideas on how to get them to not overlap?
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Hi Bridget,
the textbox size is determined by the text size of its content. Thus the easiest way to solve the problem is to reduce the text size (“size(small)”) in the local:
*start
local osmall = “, box margin(small) size(vsmall)”
*end
You probably have to try it a few times, and you want to use the relative text sizes ie. not “vsmall” but “*.5” (which is “half the normal size). That way you have a finer control over the text size. (cf. “Relativesize” documentation: http://www.stata.com/manuals13/g-4relativesize.pdf#g-4relativesize)
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