Table 2

Descriptive characteristics of respondents (n = 147)

Characteristics

Mean (SD) or n (%)

Age (missing = 1)

53.2 (16.2)

Male gender

48 (32.7)

Asthma duration

< 12 months

0

1 to 4 years

14 (9.5)

5 to 10 years

33 (22.4)

More than 10 years

100 (68.0)

English is first spoken language (missing = 2)

143 (97.3)

Difficulty of questionnaire (missing = 2)

Very

4 (2.7)

Moderately

20 (13.8)

Slightly

29 (20.0)

Not

92 (63.4)

Haughney et al. BMC Pulmonary Medicine 2007 7:16   doi:10.1186/1471-2466-7-16