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. Author manuscript; available in PMC: 2017 Jun 5.
Published in final edited form as: Genet Med. 2016 Oct 13;19(6):659–666. doi: 10.1038/gim.2016.161

Table 2. Scale Descriptives.

Variable Number of items in scale Cronbach's alpha Mean Possible Range, (Observed) SD % scoring above scale mid-point
Illness Representation Constructs
Acute Timeline 6 0.61 27.42 6-30, (17-30) 2.653 99.0
Cyclical Timeline 4 0.66 12.88 4-20, (4-20) 3.145 57.0
Consequences 6 0.74 21.21 6-30, (8-30) 4.507 71.7
Control 6 0.81 18.61 6-30, (6-30) 4.753 54.1
Treatment Control 5 0.76 14.49 5-25, (5-25) 3.795 43.1
Coherence 5 0.87 18.45 5-25, (5-25) 4.314 77.3
Emotional Representations 6 0.89 18.64 6-30, (6-30) 5.436 50.0
Identity 15 0.82 4.82 0-14, (0-14) 3.142 N/A
Health Belief Model Constructs
Susceptibility 5 0.83 20.16 5-25, (10-25) 3.569 89.6
Barriers 9 0.71 19.79 9-45, (9-38) 5.387 8.4
Benefits 4 0.65 15.33 4-20, (4-20) 2.698 88.2
Self-Efficacy 10 0.90 40.03 10-50, (13-50) 7.201 91.2
Response Efficacy 4 0.87 16.78 4-20, (4-20) 3.018 92.5