Table 5 Internal consistency and test–retest reliability for items in Part 3 for the overall scale and subscales at initial test (T1) and retest (T2)

Overall scale

0.816

0.786

0.692

0.829

0.820

0.688

1. Perceived threat subscale

0.874

0.876

0.928

0.756

0.560

0.421

2. Knowledge/perceived susceptibility/ severity to the disease subscale

0.828

0.866

0.829

0.899

0.816

0.681

3. Perceived benefits of action subscale

0.874

0.835

0.916

0.923

0.558

0.511

4. Perceived benefits of using a measuring spoon subscale

0.771

0.660

0.803

0.794

0.671

0.655

5. Likelihood of following the recommended interventions subscale

0.850

0.869

0.817

0.886

0.798

0.818

6. Perceived barriers subscale

0.783

0.896

0.765

0.657

0.762

0.652