Characteristics of asthma education studies (n = 77) and interventions (n = 94) by year
| Study characteristics | Year | p value4-150 | |||
|---|---|---|---|---|---|
| 1979–89 (n = 22) | 1990–94 (n = 25) | 1995–98 (n = 30) | |||
| Mean (SE) no. of patients studied | 68 (17) | 170 (37) | 79 (11) | 0.01 | |
| Randomised study (%) | 10 (46) | 13 (52) | 19 (63) | 0.19 | |
| Intervention characteristics (%) | n = 28 | n = 31 | n = 35 | ||
| Hours of training | |||||
| Mean (SE) | 8.4 (3.6) | 4.3 (1.5) | 7.8 (2.6) | 0.51 | |
| n | 13 | 17 | 22 | ||
| Duration of training period (days) | |||||
| Mean (SE) | 48.7 (24.6) | 78.5 (28.1) | 173.2 (45.3) | 0.05 | |
| n | 20 | 22 | 29 | ||
| Training tools (%) | |||||
| Book | 6 (21) | 6 (19) | 10 (29) | 0.48 | |
| Diary card | 4 (14) | 5 (16) | 16 (46) | 0.01 | |
| Self-management card | 3 (11) | 5 (16) | 12 (34) | 0.02 | |
| Peak flow | 1 (4) | 6 (19) | 11 (31) | 0.01 | |
| Others | 4 (14) | 3 (10) | 6 (17) | 0.71 | |
| Mean (SE) number of tools | 1.3 (0.2) | 1.3 (0.2) | 2.3 (0.2) | <0.01 | |
| Training methods (%) | |||||
| Lecture (vertical) | 23 (82) | 29 (93) | 31 (89) | 0.48 | |
| Interaction4-160 | 17 (60) | 11 (36) | 20 (57) | 0.89 | |
| Content (%) | |||||
| Self-management | 10 (36) | 15 (48) | 27 (77) | <0.01 | |
| Peak flow | 6 (21) | 12 (39) | 27 (77) | <0.01 | |
| Trigger | 5 (18) | 18 (58) | 25 (71) | <0.01 | |
| Personalisation | 13 (46) | 12 (39) | 18 (51) | 0.65 | |