Being sensitized to both shrimp and mites was independently associated with having angioedema, wheeze, and chronic airflow limitation, after adjusting for age, sex, and birch and cat sensitization. Being sensitized to shrimp or mite alone was associated with having urticaria (Table 2). There was also an independent association between lower FEV₁ (% of predicted) and sensitization to both shrimp and mites: -3.5 (-6.5, -0.5) % of predicted units.

Table 2. Logistic regression adjusted for age, sex, and sensitization to birch and cat (odds ratio, 95% confidence interval)