Lumbar Spinal Stenosis Decision Tool

Lumbar Spinal Stenosis Decision Tool     

[select name="Q1" value="Less than 60 (0 points)=0|60 to 70 (2 points)=2|Greater than 70 (3 points)=3"] <-- Age
[select name="Q2" value="6 months ago or less (0 points)=0|More than 6 months ago (1 point)=1"] <-- Onset of symptoms
[select name="Q3" value="Yes (2 points)=2|No (0 points)=0"] <-- Do symptoms improve when bending forward?
[select name="Q4" value="Yes (-2 points)=-2|No (0 points)=0"] <-- Do symptoms improve when bending backward?
[select name="Q5" value="Yes (2 points)=2|No (0 points)=0"] <-- Do symptoms worsen when standing up?
[select name="Q6" value="Yes (1 point)=1|No (0 points)=0"] <-- Is intermittent claudication present?     
[comment memo="Intermittent claudication: pain in the calf, thigh or buttock that is elicited by exertion and relieved with a few minutes of rest (like worsening pain with walking)"]   
[select name="Q7" value="Yes (1 point)=1|No (0 points)=0"] <-- Is urinary incontinence present?
Score --> [calc value="score=(Q1)+(Q2)+(Q3)+(Q4)+(Q5)+(Q6)+(Q7)" memo="Score"] out of 10 points.
[calc value="score=(Q1)+(Q2)+(Q3)+(Q4)+(Q5)+(Q6)+(Q7);score>6?'74.8%':score>4?'51.7%':score>2?'29.2%':'16.7%'" memo="Interpretation"] probability of lumbar spinal stenosis.
[checkbox memo="display/hide references" name="footnotes" value=""][conditional field="footnotes" condition="(footnotes).is('')"]
reference:  
[link url="//www.aafp.org/afp/2009/1115/p1145.html" memo="#1"] Ebell (2009) Am Fam Phys 80(10):1145-7
[/conditional]