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Table 7 Cronbach’s α coefficient and ICC for the HELIA and its subscales

From: Development and validation of a short and easy-to-use instrument for measuring health literacy: the Health Literacy Instrument for Adults (HELIA)

Domain

Number of items

Cronbach’s α coefficient

Intraclass Correlation Coefficient (ICC)

Reading

4

0.72

0.86

Access to information

6

0.79

0.91

Understanding

7

0.86

0.81

Appraisal

4

0.77

0.76

Decision making/behavioral intention

12

0.89

0.87

The scale

33

0.93

0.84