Table 1.

Patient characteristics

	N (%) (n=22)
Age (years), mean (range)	38 (20–51)
Gender
Female	55
ACQ* score, mean (range)	1.2 (0–2.9)
Prebronchodilator FEV1 % predicted, range	94 (79–107)
Level of education
Low	45
Unknown	10
High	45
Ethnicity
Dutch	22 (100)

All variables are in % except where indicated.

Low education indicates that persons whose highest education level is primary education, junior general secondary education or lower vocational education.

*Asthma Control Questionnaire, range (0) optimal asthma control–(6) uncontrolled asthma.

ACQ, asthma control questionnaire; FEV₁, forced expiratory volume in 1 s; PN, practice nurse.