Factor Number
in group		 Mouthwash
user (%)a		 Х2 test
P-value
Type of regular dental care received
NHS (State Healthcare) 1169 44.6 0.365
Private 329 48.3
Unable to get a dentist 989 43.9
Time since last dental check-up
Less than a year 1945 43.5 0.128
1-2 years 241 44.8
2-5 years 133 54.9
5-10 years 132 47.7
Have not visited a dentist for over 10 years 111 43.2
Reasons for the last dental visit
Emergency treatment needed for teeth or gums 372 50.3 0.009
Non-urgent treatment for teeth or gums 373 43.7
Dental check-up 1610 42.4
Can't remember 96 52.1
Other 105 53.3
Flossing frequency
Daily 339 59.9 < 0.001
Once every few days 617 51.9
Less than once a month 515 39.6
Never 1083 37.3
Tooth brushing frequency
Twice or more a day 1726 48.7 < 0.001
Once a day 742 36.8
Less than daily 86 31.4
Never 18 27.8

aUser: every day or once every few days; non-user: less than once a month or never.