Table 3. - Analysis of the reliability of the Brazilian version of the Self-efficacy for Appropriate Medication Adherence Scale (n=147). Campinas, SP, Brazil, 2014.
SEAMS* - Domains | Cronbach alpha | Item/total correlation | Alpha - If item deleted | ICC† | CI95%‡ |
Self-efficacy for taking medications, under difficult circumstances | 0.8 | 0.9 | [0.7-0.9] | ||
Item 1 | 0.5 | 0.8 | |||
Item 2 | 0.6 | 0.8 | |||
Item 3 | 0.7 | 0.8 | |||
Item 4 | 0.6 | 0.8 | |||
Item 6 | 0.6 | 0.8 | |||
Item 7 | 0.7 | 0.8 | |||
Item 8 | 0.6 | 0.8 | |||
Self-efficacy for continuing to take medications when the circumstances which permeate this act are uncertain | 0.9 | 1.0 | [0.9-1.0] | ||
Item 5 | 0.5 | 0.9 | |||
Item 9 | 0.8 | 0.9 | |||
Item 10 | 0.8 | 0.9 | |||
Item 11 | 0.8 | 0.9 | |||
Item 12 | 0.8 | 0.9 | |||
Item 13 | 0.7 | 0.9 | |||
Total score | 0.92 |
*Self-efficacy for Appropriate Medication Adherence Scale - SEAMS; † Intraclass Correlation Coefficient (ICC); ‡confidence interval of 95%.