Table 2.

Data at Time of First BPD Control Questionnaire (Surveyed at Recruitment)

		Mean ± S.D. [Range]
Study population (N)		1049
Age at first questionnaire (recruitment) (years)		1.9 ± 2.4 [0.08, 16.7]
Sum score at first questionnaire (recruitment)		22.8 ± 3.4 [6, 25]
Score Category at first questionnaire (recruitment)	Controlled (Sum score: 20-25)	86.2%
	Partially controlled (Sum score: 15-19)	9.9%
	Not controlled (Sum score: 5-14)	3.9%
Number of acute respiratory events at first questionnaire	Sick visits	0.5 ± 1.5 [0, 30] (n = 1033)
	Emergency department visits	0.3 ± 0.9 [0, 8] (n = 1035)
	Hospital readmissions	0.2 ± 0.7 [0, 10] (n = 1031)
	Antibiotic use	0.3 ± 1.0 [ 0, 15] (n = 1019)
	Systemic steroid	0.2 ± 0.8 [0, 10] (n = 1012)