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. 2021 Jun 3;57(6):2003103. doi: 10.1183/13993003.03103-2020

TABLE 4.

Daily adherence to maintenance therapy over months 4–6 by baseline asthma control test (ACT) total score and by age group, with the difference in arms 1–4 versus arm 5

Months 46 Arm 1 (n=87) Arm 2 (n=88) Arm 3 (n=88) Arm 4 (n=88) Arm 5 (n=86)
Baseline ACT total score: ≤15
 n# 28 31 41 29 33
 Least squares mean±se % 82.7±4.61 82.4±4.51 75.5±3.99 75.6±4.61 64.5±4.36
 CIS arm versus arm 5
  Difference % 18.3 18.0 11.0 11.2
  95% CI % 7.1–29.5 7.2–28.7 1.0–21.1 0.1–22.2
Baseline ACT total score: 16–19
 n# 55 53 43 53 52
 Least squares mean±se % 80.7±3.66 74.8±3.45 81.7±3.90 78.5±3.70 72.7±3.76
 CIS arm versus arm 5
  Difference % 8.0 2.1 9.0 5.8
  95% CI % −0.5 to 16.5 −6.3 to 10.6 0.1 to 17.8 −2.6 to 14.3
Age group: 18–35years
 n# 23 21 21 13 28
 Least squares mean±se % 70.1±5.00 58.8±5.12 68.0±5.30 62.3±6.60 56.9±4.78
 CIS arm versus arm 5
  Difference % 13.2 1.9 11.1 5.5
  95% CI % 0.9–25.6 −10.8 to 14.6 −1.4 to 23.6 −9.1 to 20.0
Age group: 36–48years
 n# 20 24 22 28 19
 Least squares mean±se % 82.0±5.38 82.3±4.90 74.7±5.05 76.3±4.68 65.6±5.47
 CIS arm versus arm 5
  Difference % 16.5 16.8 9.1 10.8
  95% CI % 2.6–30.3 3.4–30.1 −4.4 to 22.6 −2.1 to 23.7
Age group: 49–58years
 n# 21 21 18 27 13
 Least squares mean±se % 85.1±5.30 84.6±5.21 79.2±5.52 82.1±4.70 76.4±6.47
 CIS arm versus arm 5
  Difference % 8.7 8.2 2.8 5.7
  95% CI % −6.8 to 24.2 −7.1 to 23.5 −13.1 to 18.6 −8.9 to 20.3
Age group: >58years
 n# 19 18 23 14 25
 Least squares mean±se % 88.0±5.56 82.8±5.53 91.6±5.05 87.4±6.42 81.6±4.90
 CIS arm versus arm 5
  Difference % 6.4 1.2 10.0 5.8
  95% CI % −6.9 to 19.7 −12.2 to 14.6 −2.6 to 22.6 −9.1 to 20.6

Arm 1: maintenance data to participants and HCPs; arm 2: maintenance data to participants; arm 3: maintenance and rescue data to participants and HCPs; arm 4: maintenance and rescue data to participants; arm 5: no feedback (control). CIS: connected inhaler system; CI: confidence interval; HCP: healthcare professional. #: over months 4–6, n included the number of participants with observed and imputed data.