CONTROL GROUP   No signs Only signs Moderate Severe
Smokers (n=54) 3 18 20 13
Non-smokers
(n= 58)
23 19 14 12
  Statistical
analysis
  n.s. p= 0.0002 p= 0.0001
PTX GROUP   No signs Only signs Moderate Severe
Smokers (n=54) 24 16 10 4
Non-smokers
(n= 58)
  9 8 0
  Statistical
analysis
  p<0.07 p<0.49 p< 0.06
Table 2: Effect of pentoxifylline on manifestation of TAO after 12 month therapy.
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