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Table 4 Standardised version of the Asthma Quality of Life Questionnaire for 12 years and older (AQLQ12+)

From: Modification of the asthma quality of life questionnaire (standardised) for patients 12 years and older

AQLQ12+ Mean Score at baseline Mean change score during treatment
(adjusted means)
Internal Consistency at baseline
Cronbach's alpha
  ≥ 18 yr 12–17 yr p value ≥ 18 yr 12–17 yr p value ≥ 18 yr 12–17 yr
  Study 1
Overall 4.95 5.14 0.063 0.58 0.47 0.17 0.96 0.95
Symptoms 4.87 4.96 0.40 0.65 0.57 0.41 0.93 0.92
Activity limitation 5.09 5.41 0.002 0.52 0.39 0.12 0.91 0.86
Emotional function 5.06 5.11 0.68 0.57 0.46 0.26 0.87 0.77
Environmental stimuli 4.64 4.94 0.028 0.54 0.4 0.16 0.82 0.77
  Study 2
Overall 4.69 4.72 0.82 0.66 0.59 0.52 0.97 0.97
Symptoms 4.68 4.64 0.73 0.73 0.67 0.60 0.94 0.95
Activity limitation 4.81 4.96 0.25 0.57 0.51 0.57 0.92 0.91
Emotional function 4.74 4.68 0.70 0.76 0.62 0.27 0.86 0.91
Environmental stimuli 4.24 4.43 0.24 0.57 0.56 0.96 0.84 0.88