Table 1 Demography and atopic status data from three of most representative studies on severe asthma

Study design/location

Cross-sectional European multicentre study (9 Countries)

U.S. Multicentre

Observational study

Observational cross-sectional multicentre study

(9 sites in U.S. and 1 site in U.K.)

Patients (N.) with severe asthma

163

2282 (48% OF TOTAL)

204

Age characteristics

Age range: 17-65 yrs

Mean age ± SD : 38.9 ± 20.92 yrs

Mean age ± SD: 41 ± 13 yrs

Sex

Sex ratio (F/M) : 4.4 / 1

Not reported^c

Females: 64%

≥1 Positive skin prick test

58%

(VS. 78% OF Controlled asthmatics)

-

71%

(VS. 85% of mild and 87% of moderate asthma)

Mean total serum IgE

109 KU/L-¹, 95% CI: 85-139

106.6 IU/ml^a

2.0 ± 7.6^b

References

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