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Table 2 Risk factors, presented as odds ratios (OR) and 95% confidence intervals (CI) for fewer-symptom asthma and multi-symptom asthma from a multiple logistic regression analysis of 18,087 responders in the West Sweden Asthma Study.

From: Multi-symptom asthma is closely related to nasal blockage, rhinorrhea and symptoms of chronic rhinosinusitis-evidence from the West Sweden Asthma Study

   Non-asthma vs. fewer-symptom asthma Non-asthma vs. multi-symptom asthma Fewer-symptom asthma vs. multi-symptom asthma
Risk factors   OR (95% CI) OR (95% CI) OR (95% CI)
Family history +Asthma-Allergy 2.42 (1.93-3.05) 2.44 (1.55-3.84) 1.15 (0.69-1.91)
  +Allergy-Asthma 0.97 (0.81-1.15) 1.42 (1.03-1.97) 1.53 (1.05-2.22)
  Both 2.39 (2.02-2.82) 3.68 (2.72-4.99) 1.63 (1.16-2.29)
Smoking Ex-smokers 1.41 (1.22-1.63) 1.15 (0.87-1.52) 0.76 (0.56-1.05)
  Smokers 1.08 (0.92-1.27) 1.26 (0.96-1.66) 1.28 (0.93-1.77)
Age (years) 31-45 0.91 (0.78-1.07) 0.97 (0.71-1.33) 1.07 (0.75-1.52)
  46-60 0.70 (0.59-0.83) 1.16 (0.84-1.59) 1.70 (1.18-2.45)
  61-75 0.80 (0.66-0.97) 1.70 (1.21-2.38) 2.08 (1.40-3.09)
Occupational exposure   1.22 (1.06-1.41) 1.63 (1.28-2.07) 1.36 (1.03-1.80)
Gender Women 1.12 (0.99-1.27) 1.59 (1.26-2.02) 1.31 (1.00-1.72)
Allergic rhinitis   4.98 (4.37-5.68) 3.72 (2.90-4.76) 0.97 (0.73-1.29)
Nasal blockage   1.29 (1.09-1.52) 2.82 (2.15-3.71) 2.21 (1.64-2.97)
Rhinorrhea   1.31 (1.10-1.55) 1.75 (1.32-2.31) 1.49 (1.10-2.02)
  1. All co-variates incorporated in the analysis are presented.