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Table 1 Scales of the questionnaire and internal consistencies

From: Third-party toothbrushing is associated with a positive patient experience: randomized, single-blind, patient-centered analysis

Scale (Crohnbach’s α) Items (translated from German)
Positive aspects of wellbeing (0.89) That someone else brushed my teeth…
  …was fun for me
  …gave me joy
  …I found normal
  …made me feel good
  …I found helpful
  …I found pleasant
  …I found motivating
  …I found reassuring
Negative aspects of wellbeing (0.87) …I found disgusting
  …I found shameful
  …I found uncomfortable
  …I found distressing
  …I found disconcerting
  …I found too intimate
  …I found embarrassing
  …I found invasive
Pleasant sensations regarding the experience of being brushed (0.87) When the other person brushed my teeth…
  … I was confident that the person could do this well
  …I had the impression that the person was well prepared
  …he/ she was skilful in handling the toothbrush
  …I felt respected
  …the cleaning person enjoyed it
  …I was looking forward to the result
  …the cleaning person was proud of it
  …he/ she enjoyed it
  …I was grateful that he/she was doing it
  …he/ she took great care to make me feel comfortable
Unpleasant sensations with regard to the experience of being brushed (0.91) … I was afraid during the cleaning that the person would hurt me
  …he/ she hurt me
  …I was unsure how to behave
  …I was worried that the person would hurt me
  …I felt that it was taking too long
  …it was difficult to find a comfortable position for me
  …the cleaning person caused me pain
  …I felt helpless
  …I felt like a kid
  …I felt embarrassed that I do need it
  …I felt uncomfortable
…I was unsure how to behave
  …I was afraid of contact
  …I felt patronized
  …I had the feeling that he/she was getting too close to me
  …I had the feeling that he/she felt uncomfortable
  …I felt that he/she was exceeding my limits