Table 1

Baseline characteristics of subjects in the two groups (n=280)

Total (n=280)SMP (n=135)SC (n=145)
SMP=self-management programme; SC=standard care.
χ2 test for association for categorical variables, Mann-Whitney U test for continuous non-parametric variables.
*n=267; categories 1–3 represent more affluent areas, 4–7 less affluent (Carstairs deprivation index15–18).
†Eight patients recalled asthma admissions more than 20 years before their present admission; breakdown was: 23 years previously, n=2; 24 years previously, n=1; 26 years, n=1, 28 years, n=1, 31 years, n=1; two “admitted as child” patients now aged over 40 years. These patients were included in the no previous admission group.
Men94 (34%)54 (40%)40 (28%)
Women186 (66%)81 (60%)105 (72%)
Median (IQR) age (years)29 (22–43)31 (23–43)29 (22–42)
Deprivation category*
    1–3143 (54%)72 (57%)71 (51%)
    4–7124 (46%)55 (43%)69 (49%)
Current smoker121 (43%)66 (46%)55 (41%)
Previous admission for acute asthma
    Never†143 (51%)72 (53%)71 (49%)
    Within 10 years125 (45%)57 (41%)68 (45%)
    Within 11–20 years12 (4%)6 (4%)6 (5%)
Median (IQR) years since previous admission2 (0–6)2 (0–6)2 (0–6)
Inhaled steroid prescribed before admission221 (79%)102 (76%)119 (82%)
Chest clinic outpatient in 12 months before admission63 (23%)28 (21%)35 (24%)
Median (IQR) admission PEF (% pred)41.2 (30.6–55.8)39.8 (30.8–54.2)44.4 (30.6–54.7)
Admitted through A&E76 (27%)36 (27%)40 (28%)