Table 3.

Contribution of significant signs and symptoms to the diagnosis asthma and COPD combined as derived from logistic regression analysis

Variable	Asthma or COPD
	β coefficient (SE)	P value
Reported wheeze	1.2 (0.35)	0.002
Reported dyspnoea*	1.0 (0.36)	0.01
Prolonged expiration	1.3 (0.50)	0.01
Pack years of smoking	0.04 (0.01)	0.01
Symptoms provoked by allergens	1.5 (0.42)	0.02
Sex	0.88 (0.38)	0.02

^*Reporting of breathlessness (attack of dyspnoea, woken up by dyspnoea, or persistent dyspnoea) during past 2 weeks.