Table 3.

Quality scores categories. For validity studies, score points and its categories are shown. For reliability studies, score percentages are given. When a non-applicable answer was chosen, calculation was adjusted to exclude the relevant question

Score category	Score points*	Score percentage**
Poor	0–2	0–22%
Fair	3–5	23–56%
Moderate	6 or 7	57–78%
High	8 or 9	> 78%

*Score points of each category as proposed by Prowse et al. [29]

**Our new score scale calculated as percentage