Table 2

Possible asthma control cases when securing an MID in asthma control

Possible casesDescriptionPossible shifts
(current to target scenario)
Current scenario (ACT)Target scenario (ACT)
Asthma is not controlled and a gain in ACT score equal to 3 points:
1 RED to RED
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Did not change the asthma control status—still not controlled.5–108–13
2 RED to YELLOW
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Did change the asthma control status—from not controlled to partially controlled.11–1414–17
Asthma is partially controlled and a gain in ACT score equal to 3 points:
3 YELLOW to YELLOW
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Did not change the asthma control status—still partially controlled.15–1618–19
Asthma moved from partially controlled to controlled and a gain in ACT score equal to 3 points:
4 YELLOW to GREEN
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Did change the asthma control status—from partially controlled to controlled.18–1920–21
Asthma is controlled and a gain in ACT score equal to 3 points:
5 GREEN to GREEN
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Did not change the asthma control status—always controlled.20–21≥23
  • Possible shifts: a series of shifts in care landscape were considered towards a target scenario where a patient with asthma experienced a clinically significant change in ACT score equal to the MID of 3 points in ACT score.

  • ACT, Asthma Control Test; MID, minimally important difference.