Number of factors
in the final modela 		% mouthwash users Total number in group
0 factors 27.1 48
1 factor 25.7 307
2 factors 33.5 744
3 factors 50.5 750
4 factors 57.4 423
5 factors 71.9 128
6 factors 93.8 16

aAge (25 - 34 years); education (secondary school or technical college); ever smoker; reason for last dental visit (emergency treatment, can’t remember or other); tooth brushing frequency (twice or more a day); flossing frequency (once every few days or daily); gum disease.