**16.1 Internal reliability**

The internal consistency of the knowledge scale was calculated using 'Cronbach's Alpha and the average inter-item correlation' ([33]:209). These values are presented in **Table 2** below.

Although the values of 'Cronbach's Alpha and average inter-item correlation' ([33]:209) are 0.483 and 0.130 respectively, below the minimum acceptable values, they are acceptable since it was expected that the respondents would possess some knowledge on the level of added sugar in SSBs depending on their exposure and usage of nutrition labels of the SSBs.
