Table 5

Association of atopy (defined as any skin test reaction at least 3 mm more than control) with respiratory symptoms and asthma

Any skin test 3 mm more than control
Negative (%)Positive (%)OR (95% CI)
Asthma or bronchospasm ever111/576 (19.3)44/181 (24.3)1.35 (0.90 to 2.00)
Symptoms in last 12 months133/576 (23.1)39/181 (21.5)0.91 (0.61 to 1.37)
Asthma attack in last 12 months20/576 (3.5)8/181 (4.4)1.29 (0.56 to 2.97)
Pre-test FEV1 <70% 14/576 (2.4)6/181 (3.3)1.38 (0.52 to 3.64)
15% reduction in FEV1 138/562 (24.6)35/176 (19.9)0.76 (0.50 to 1.16)
  • FEV1 = forced expiratory volume in one second.