Table 1.
Baseline demographic characteristics of study population per group.
| M (SD) | Overall sample (n=88) |
Intervention group (n=44) |
Control group (n=44) |
Lost to follow-up (n=8) |
| Age | 56.6 (15.2) | 57.0 (14.2) | 56.3 (16.2) | 53.5 (12.11) |
| Female N (%) | 53.0 (60.2) | 27.0 (61.4) | 26.0 (59.1) | 6 (75) |
| BMI | 29.5 (6.1) | 28.9 (5.9) | 30.1 (6.3) | 32.7 (4.3) |
| Length of diagnosis | 24.0 (17.5) | 25.2 (17.2) | 22.8 (17.8) | 30 (18.9) |
| FEV1 | 2.5 (0.8) | 2.6 (0.8) | 2.5 (0.8) | 2.40 (0.47) |
| % predicted FEV1 | 92.3 (16.0) | 94.8 (16.0) | 89.8 (15.8) | 92.0 (12.9) |
| FEV1/FVC | 76.6 (8.5) | 77.1 (8.0) | 76.1 (9.0) | 74.9 (4.1) |
| Peak flow | 421.2 (104.7) | 421.3 (108.3) | 421.1 (102.3) | 420.6 (83.8) |
| Ethnicity | ||||
| White N (%) | 84 (95.5) | 42 (95.5) | 42 (95.5) | 7 (87.5) |
| Other N (%) | 4 (4.5) | 2 (4.5) | 2 (4.5) | 1 (12.5) |
| Smoking status | ||||
| Current N (%) | 9 (10.2) | 7 (15.9) | 2 (4.5) | 2 (25.0) |
| Former N (%) | 29 (33.0) | 13 (29.5) | 16 (36.3) | 3 (37.5) |
| Never N (%) | 50 (56.8) | 24 (54.5) | 26 (59.1) | 3 (37.5) |
| Age left education | 18.5 (5.3) | 19.4 (7.0)* | 17.7 (2.7) | 20.4 (8.2) |
| 16 or under N (%) | 40 (46.5) | 18 (42.9) | 22 (50.0) | 4 (50.0) |
| 17–18 n (%) | 22 (25.6) | 9 (21.4) | 13 (29.5) | 1 (12.5) |
| Above 18 (%) | 24 (27.9) | 15 (35.7) | 9 (20.5) | 3 (37.5) |
| Index of Multiple Deprivation Mean Rank (median decile) |
17 192 (5.5) | 17 231 (6.5) | 17 212 (5) | 4505.5 (1.5) |
| AQLQ | 4.81 (1.01) | 4.85 (0.94) | 4.78 (1.09) | 4.26 (0.55) |
| ACQ | 1.45 (0.80) | 1.35 (0.66) | 1.56 (0.91) | 1.52 (0.73) |
| HADS-A | 6.60 (4.47) | 6.57 (3.87) | 6.64 (5.04) | 8.63 (3.9) |
| HADS-D | 3.89 (3.57) | 3.39 (3.07) | 4.39 (3.99) | 4.75 (4.4) |
| EQ-5D-5L | 0.83 (0.19) | 0.86 (0.15) | 0.81 (0.22) | 4 (50.0) |
| EQ-5D-VAS | 71.5 (18.2) | 70.0 (19.3) | 73.0 (17.2) | 1 (12.5) |
| ICECAP-A | 0.87 (0.18) | 0.89 (0.12) | 0.88 (0.16) | 3 (37.5) |
| PEI | 2.52 (1.23) | 2.44 (1.09) | 2.60 (1.37) | 2.73 (1.0) |
| MARS-A | 4.70 (1.05) | 4.80 (0.90) | 4.60 (1.20) | 4.3 (0.8) |
*Percentages are reported from 42 participants as 2 participants in the intervention group did not complete these data.
ACQ, Asthma Control Questionnaire; AQLQ, Asthma Quality of Life Questionnaire; BMI, body mass index; EQ-5D-5L, EuroQol Five Dimensional Quality of Life; EQ-5D-VAS, EuroQol-5D Visual Analogue Scale; FEV1, forced expiratory volume; FVC, forced vital capacity; HADS-A, Hospital Anxiety and Depression Scale-Anxiety; ICECAP-A, Icepop Capability measure for Adults; MARS-A, Medication Adherence Rating Scale for Asthma; PEI, patient enablement instrument.