Indices of the five-item Likert scale for each of the categories
| Likert scale | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Experience | Very bad | Bad | Neither | Good | Very good |
| Difficulty | Very hard | Hard | Neither | Easy | Very easy |
| Convenience | Very inconvenient | Inconvenient | Neither | Convenient | Very convenient |
| Embarrassment | Very embarrassed | Embarrassed | Neither | Not embarrassed | Not embarrassed at all |
| Discomfort/pain | Severe discomfort/pain | Some discomfort/pain | Neither | No discomfort/pain | No discomfort/pain at all |
| Confidence | Not at all confident | Unconfident | Neither | Confident | Very confident |