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Table 3 The comparison of TDI- and TMA-specific IgGs between the urethane foam factory workers and controls

From: Evaluation of chemical-specific IgG antibodies in male workers from a urethane foam factory

Concentration of specific IgG Controls Workers OR (95% CI) P value
TDI (μg/mL) N = 87 N = 75   
 T1 (< 0.47) 29 16 1.00 (reference)  
 T2 (≥ 0.47 < 1.28) 29 12 0.71 (0.27–1.84) 0.479
 T3 (≥ 1.28) 29 47 2.71 (1.22–6.04) 0.015
  P for trend = 0.002
TMA (μg/mL) N = 85 N = 75   
 T1 (< 1.00) 28 14 1.00 (reference)  
 T2 (≥ 1.00 < 3.00) 28 24 1.50 (0.62–3.60) 0.369
 T3 (≥ 3.00) 29 37 2.14 (0.92–4.98) 0.078
    P for trend =0.060
  1. OR, 95% CI, and P values were obtained using multivariate logistic regression analysis adjusted for the effects of age and allergic history
  2. Concentration of specific IgGs were divided into three groups (T1–T3) depending on the levels of chemical-specific IgGs detected in controls