Table 1—

Demographic data of studied subjects

		Japanese population		British population
		Control	Asthmatic	Control	Asthmatic
Total number of subjects		181	210	92	142
Total serum IgE	≥200 IU·mL⁻¹	41	128	1	78
	<200 IU·mL⁻¹	140	82	91	64
RAST (house dust mite)	≥2	54	93	15	91
	<2	127	117	77	51
Severity of asthma	Mild		67		38
	Moderate - severe		143		104

IgE: immunoglobulin E; RAST: radioallergosorbent test