Chapter 3, Appendix Figure 3:
Asthma admission rates for European countries, age 20-44 v 45+ years.

Rank correlation: r = 0.63, p=0.001

Source: WHO Hospital Morbidity Database, accessed November 2013.

Admissions per 100,000 per year, age 45+
Admissions per 100,000 per year, age 20-44