Table 1 Items in the questionnaire and respective response options

“When were you born?”

yymmdd

“Please indicate your gender”

0 Female

1 Male

“How tall are you?”

cm

“How much do you weigh?”

kg

“What is your highest completed level of education?”

1 Elementary School, not finished +

Elementary School, finished

2 Upper Secondary School

3 University

“How do you assess your own dental health at present?”

1 Bad +

Somewhat bad

2 Good

3 Very good

“Do you smoke?”

1 Yes +

No, but used to

2 No

“How much do you exercise in your spare time?”

1 Almost no exercise at all +

Short walks, now and then

2 Regularly, once a week +

Regularly, twice or more a week

3 Regularly, hard, at least twice a week

“Have you been motivated to follow advice and instructions that you have received concerning your oral health?”

1 No +

Yes, a bit motivated

2 Yes, quite motivated

3 Yes, very motivated

“In your opinion, do your dietary habits affect your oral health?”

1 No +

Yes, a little

2 Yes, somewhat

3 Yes, very much

“In your opinion, how significant is good oral health for your general wellbeing?”

1 Not at all significant +

A little

2 Somewhat significant

3 Very significant

“How satisfied are you with the appearance of your teeth?”

1 Very dissatisfied +

Quite dissatisfied

2 Quite satisfied

3 Very satisfied