Table 3. Adjusted mean differences (AMD), including 95% CI, p-values, and Cohen’s d, between the intervention and control group at T2 and T3.
Outcome | Time point | AMD [95% CI] | p | Cohen’s d |
ACT | T2 | 6.00 [5.31; 6.69] | < 0.001 | 1.69 |
T3 | 4.71 [3.99; 5.43] | < 0.001 | 1.27 | |
AQLQ total | T2 | 1.32 [1.18; 1.45] | < 0.001 | 1.78 |
T3 | 0.91 [0.76; 1.06] | < 0.001 | 1.14 | |
SGRQ total | T2 | –18.5 [–16.3; –20.8] | < 0.001 | –1.57 |
T3 | –15.5 [–12.9; 18.1] | < 0.001 | –1.16 | |
Exertional dyspnea | T2 | –2.38 [–2.77; –1.98] | < 0.001 | –1.17 |
T3 | –2.28 [–2.71; –1.85] | < 0.001 | –1.03 | |
PHQ-9 | T2 | –3.98 [–4.73; –3.24] | < 0.001 | –1.04 |
T3 | –1.96 [–2.70; –1.23] | < 0.001 | –0.53 | |
GAD-7 | T2 | –3.52[–4.23; –2.80] | < 0.001 | –0.95 |
T3 | –2.01 [–2.74; –1.29] | < 0.001 | –0.54 | |
heiQ-SK | T2 | 0.58 [0.50; 0.67] | < 0.001 | 1.28 |
T3 | 0.45 [0.35; 0.54] | < 0.001 | 0.89 | |
IPQ-7 | T2 | 2.02 [1.66; 2.37] | < 0.001 | 1.10 |
T3 | 1.79 [1.37; 2.22] | < 0.001 | 0.81 | |
IPQ-4 | T2 | 0.94 [0.61; 1.28] | < 0.001 | 0.53 |
T3 | 0.23 [–0.12; 047] | 0.200 | 0.13 | |
IPQ-3 | T2 | 1.40 [0.99; 1.81] | < 0.001 | 0.66 |
T3 | 0.59 [0.16; 1.01] | 0.011 | 0.27 | |
MARS-D*1 | T2 | 0.55 [0.28; 0.82] | < 0.001 | 0.41 |
T3 | 0.37 [0.08; 0.66] | 0.003 | 0.24 | |
WAS | T2 | 1.18 [0.82; 1.53] | < 0.001 | 0.65 |
T3 | 1.01 [0.66; 1.36] | < 0.001 | 0.56 | |
Odds ratio [95% CI] | ||||
SPE*2 | T2 | 0.32 [0.20; 0.52] | < 0.001 | |
T3 | 0.73 [0.45;1.14] | 0.163 |
ACT, Asthma Control Test (primary endpoint); AQLQ, Asthma Quality of Life Questionnaire;
CI, confidence interval; GAD-7, Generalized Anxiety Disorder Questionnaire; heiQ-SK, Health Education Impact Questionnaire: scale of Skills and techniques; IPQ, Illness Perception
Questionnaire; IPQ-3, How much control do you feel you have over your asthma?; IPQ-4, How much do you think your treatment can help with your asthma?; IPQ-7, How well do you feel you understand your asthma?; MARS-D, Medical Adherence Rating Scale; PHQ-9, Patient Health Questionnaire 9; SGRQ, St. George’s Respiratory Questionnaire; SPE, Subjective Prognosis of Employment Scale; WAS, Work Ability
Score *1 based on robust regressions; *2 based on ordinal logistic regressions