Table 2—

Geometric means of immunoglobulin- (Ig)G and IgA antibodies measured by enzyme immunoassay (EIA) against the heat shock protein (HSP) 60 of Chlamydia pneumoniae and human in asthmatic subjects, asymptomatic controls and bronchitis controls

Asthmatic subjectsAsymptomatic controlsBronchitis controls
Subjects n244517
C. pneumoniae Hsp60 EIU
 IgG689531483
 IgA184139143
Human Hsp60, EIU
 IgG399392443
 IgA244234251
  • EIU: enzyme immunoassay unit

  • optical density multiplied by 1,000

  • p=0.03 versus asymptomatic controls, p=0.01 versus all controls (asymptomatic and bronchitis) using analysis of variance after log transformation of EIA units with age, sex and (ever-) smoking as covariates