From: Assessing Asthma control in UK primary care: Use of routinely collected prospective observational consultation data to determine appropriateness of a variety of control assessment models
BTS Treatment step
0
n = 5,477
1
n = 7,274
2
n = 29,629
3
n = 10,678
4
n = 11,491
5
n = 380
Symptoms
4,401
80%
6,065
83%
24,801
84%
8,754
82%
10,125
88%
357
94%