Skip to main content
. 2023 Oct 14;23:760. doi: 10.1186/s12903-023-03492-z

Table 2.

Characteristics of the study sample by dentine caries experience (DMFT)

Variables N (%) DMFT
median (IQR)
DMFT
mean (SD)
Total 6351 1 (0–4) 2.50 (3.29)
Sex
 Female 3249 (51.2) 1 (0–4) 2.60 (3.37)
 Male 3102 (48.8) 1 (0–4) 2.39 (3.19)
Age, mean (SD) 15.51 (1.46)
 13–15 years 3629 (57.1) 1 (0–3) 1.88 (2.66)
 16–17 years 2722 (42.9) 2 (0–5) 3.31 (3.82)
Nordic birth country parents
 Both parents 5590 (88.0) 1 (0–4) 2.48 (3.28)
 One parenta 331 (5.2) 1 (0–3) 2.31 (3.03)
 None of the parentsb 401 (6.3) 2 (0–4) 2.95 (3.57)
 Unknown/missing 29 (0.5) 1 (0–5) 2.48 (3.08)
Family economy
 Better/same financial situation as most others 5813 (91.5) 1 (0–4) 2.46 (3.27)
 Worse financial situation 463 (7.3) 2 (0–4) 2.86 (3.45)
 Unknown/missing 75 (1.2) 2 (0–6) 3.28 (3.54)
Parental employment
 Both parents in paid work 4636 (73.0) 1 (0–3) 2.26 (3.07)
 One parent in paid workc 1205 (19.0) 2 (0–4) 2.87 (3.64)
 None of the parents in paid workd 198 (3.1) 3 (0–6) 3.88 (4.08)
 Unknown/missing 312 (4.9) 2 (0–6) 3.60 (3.84)
Living arrangements
 Both parents 3880 (61.1) 1 (0–3) 2.20 (3.09)
 Both parents, but shared 1110 (17.5) 2 (0–4) 2.56 (3.26)
 One of the parents 804 (12.7) 2 (0–5) 3.16 (3.56)
 Not living with parents 260 (4.1) 2 (0–5) 3.30 (3.86)
 Unknown/missing 297 (4.7) 2 (0–6) 3.60 (3.88)
Toothbrushing frequency
 Daily 5910 (93.1) 1 (0–4) 2.39 (3.16)
 Non-daily 406 (6.4) 3 (1–6) 4.18 (4.48)
 Missing 35 (0.6) 0 (0–1) 1.11 (1.92)

N: Number of participants; DMFT: Decayed, Missing, and Filled Teeth; IQR: Interquartile range; SD: Standard deviation

aIncluded 56 participants with a missing answer for one of the parents

bIncluded 31 participants with a missing answer for one of the parents

cIncluded 141 participants with a missing answer for one of the parents

dIncluded 42 participants with a missing answer for one of the parents