TAHDTorrington Area Health District (Connecticut)
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A negative TAHD indicated an improvement and a positive TAHD indicated deterioration.
For an easier reading of the data, the TAHD value was converted into Arbitrary Units, named Improvement Progression Unit (IPU) for negative TAHD or Deterioration Progression Unit (DPU) for positive TAHD, where one Unit represents the standard difference of one degree of a histological lesion in the four years median interval between 2nd and 1st LB: one Progression Unit (IPU or DPU) = one degree difference four years x 100 = 25 TAHD points.
After 24 hours of incubation, the TAHD group demonstrated the greatest increase in MDA levels.