Table 6.

Distribution of CF patients with FEV₁ ≥70% predicted followed in the 2008 Cystic Fibrosis Foundation Patient Registry [1]

	Age range§, yrs
	≥6	6–12	13–17	18–24	≥25
Patients, n	12,972	4,992	3,300	2,427	2,253
FEV1 % predicted * , n
70 to <85	5,108	1,267	1,266	1,288	1,287
85 to <100	4,281	1,681	1,129	786	685
≥100	3,583	2,044	905	353	281
Weight-for-age percentile † , n
≥25th	8,910	3,234	2,232	1,633	1,811
<25th	4,060	1,758	1,068	794	440
P. aeruginosa culture history in 2007, n
All negative	3,143	476	802	962	903
Any positive	8,478	4,263	2,284	1,151	780
IV exacerbations in 2007, n
0	9,010	3,657	2,097	1,575	1,681
1	2,527	956	714	502	355
2	851	261	265	194	131
≥3	584	118	224	156	86

^§Age as of Jan 1, 2008.

^*First available FEV₁ measure in 2008.

^†First available weight-for-age percentile measure in 2008.