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. 2015 Sep 23;17(9):e221. doi: 10.2196/jmir.4943

Table 3.

Summary statistics from classical test theory procedures across final scales.

Scale Cronbach alpha Corrected item-total (r) range
Social Media Self-Efficacy .98 .66-.86
Social Media Experience .98 .75-.85
Effort Expectancy .74 .51-.63
Performance Expectancy .81 .60-.73
Facilitating Conditions .66 .57-.70
Social Influence .66 .41-.57