Allergy Treatment Data
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A study was conducted to determine if a medication could be effective
at reducing allergic symptoms.  These data represent symptom scores for 
a randomly selected day for each patient during a 10 week follow-up period.  

Note that a placebo group, and 3 active dose groups were studied.  In addition,
the current pollen count (the stimulus for symptoms) was also measured
for the day that symptoms were collected.


Variables:

obs      patient ID
itchy    symptoms (1=none, 2=mild, 3=moderate, 4=severe)
sneezy   symptoms (1=none, 2=mild, 3=moderate, 4=severe)
runny    symptoms (1=none, 2=mild, 3=moderate, 4=severe)
stuffy   symptoms (1=none, 2=mild, 3=moderate, 4=severe)
treat    treatment (1 = placebo, 2 = 15mg, 3 = 30mg, 4 = 60mg )
day      study day
pollen   pollen count (particles per cubic metre)
age      age in years
weight   weight in pounds
height   height in inches
sex      gender (0=male, 1=female)
center   study center (0, 1, 2, 3)