Features

1999

2000–01

2002

2003

Adults (>=18 years)

Severe

7.9%

5.5%

5.5%

Severe + moderate 28%

Moderate

27.7%

24.5%

27.2%

Mild

27.3%

Mild + very mild 70%

31.4%

Very mild

32.9%

35.9%

Children (<18 years)

Persistent

4.9%

5.1%

2.1%

Persistent + frequent 23.0%

Frequent episodic

21.0%

20.3%

15.5%

Infrequent episodic

68.5%

74.6%

82.5%

Time period

30/3/99 to 7/6/99

28/11/00 to 15/01/01

04/04/02 to 06/05/02

23/9/03 to 27/10/03

Sample

4,285 encounters
from 213 GPs:
Patients with asthma
(480 adults, 143 children)

5,495 encounters
from 95 GPs:
Patients with asthma
(543 adults, 118 children)

3,070 encounters
from 105 GPs:
Patients with asthma
(312 adults, 97 children)

2,527 encounters
from 87 GPs:
Patients with asthma
(367 total)