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. 2018 Apr 30;3:34. Originally published 2018 Mar 26. [Version 2] doi: 10.12688/wellcomeopenres.14159.2

Table 15. Valid and missing responses.

Variable
name:
Variable topic Valid (%) Missing (%)
YPC1950 Length of time since respondent last went to the dentist 4094 (97.0) 128 (3.0)
YPC1960 Reason respondent usually goes to the dentist 4092 (96.9) 130 (3.1)
YPC1970 Any of respondent’s teeth taken out for braces/traintracks/orthodontics 4043 (95.8) 179 (4.2)
YPC2070 Number of times respondent has had pain from their wisdom teeth 3678 (87.1) 544 (12.9)
YPC2071 Number of times respondent has had a course of antibiotics for problems with their
wisdom teeth
3659 (86.7) 563 (13.3)
YPC2072 Number of times respondent has had facial swelling from their wisdom teeth 3655 (86.6) 567 (13.4)
YPC2080 Respondent has ever had to stay in a hospital bed, either during the day or overnight,
because of problems from their wisdom teeth
3714 (88.0) 508 (12.0)
YPC2090 Respondent has had any wisdom teeth removed 3714 (88.0) 508 (12.0)
YPC2100 Respondent has had any other treatment to their wisdom teeth when they were
causing pain, like cleaning around the gum or removing part of the gum
3685 (87.3) 537 (12.7)
YPC2110 Respondent ever had mouth ulcers 4053 (96.0) 169 (4.0)
YPC2111 Age when respondent first noticed that they had mouth ulcers (Count excludes those
that answered “Don’t remember to YPC2111, N = 509; Percentage relates to those that
answered “Yes,…” to YPC110, N = 2,870)
2423 (84.4) 447 (15.6)
YPC2112 Frequency respondent gets mouth ulcers (Count excludes those that answered “Don’t
remember to YPC2112, N = 236; Percentage relates to those that answered “Yes,…” to
YPC110, N = 2,870)
2705 (94.3) 165 (5.7)