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Table 3 Internal consistency (alpha) for four autonomy support scales

From: Psychometric properties of a brief measure of autonomy support in breast cancer patients

Target Overall (n = 155) Surgeon (n = 157) Medical Oncologist (n = 138) Radiation Oncologist (n = 106)
Alpha with all items 0.93 0.94 0.97 0.92
Alpha if item removed     
Provided me with choices 0.93 0.94 0.96 0.93
Understood how I saw things 0.92 0.93 0.96 0.90
Expressed confidence 0.92 0.92 0.96 0.90
Listened 0.91 0.92 0.96 0.89
Encouraged questions 0.94 0.95 0.97 0.93
Tried to understand 0.91 0.93 0.96 0.89