Table II shows a repeated pattern of work related symptoms
occurring to excess in the air conditioned and mechanically
ventilated buildings compared with the naturally ventilated
ones. Table III confirms the excesses in each building compared
with the naturally ventilated buildings. This excess of
symptoms in the air conditioned and mechanically ventilated
buildings was also present in the three pairs of buildings in
which the workers were interviewed blind: buildings 1 and 2,
3 and 4, and 8 and 9. A complex of symptoms affecting the nose,
eyes, and mucous membranes with headache, dry skin, and
lethargy emerged. These symptoms were, with one exception
(nasal symptoms in building 3), most prevalent in the two
buildings (buildings 5 and 8) in which dissatisfaction among the
workforce"had led to a request for an independent examination
of the air conditioning system (table III). In these two buildings
one further symptom emerged: itchiness of the skin.