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. 2022 Mar 9;72(4):506–511. doi: 10.1016/j.identj.2021.12.003

Table 2.

Caries prevalence and mean number of DMFS by period of FMR.

Period of FMR N Prevalence Odds ratio 95% CI
Pa Mean DMFS 95% CI
Differenceb Pc
Low High Low High
Non-FMR group 364 64.6% 1 4.47 3.78 5.16 ref. -
Elementary school 96 47.9% 1.97 1.25 3.11 .002 2.15 1.39 2.90 51.9% <.001
Preschool and elementary school 22 59.1% 1.26 0.52 3.02 .383 2.86 0.96 4.77 36.0% .659
Elementary and junior high school 43 55.8% 1.44 0.76 2.72 .172 3.93 1.86 6.00 12.1% 1.000
Preschool, elementary, and junior high school 26 57.7% 0.75 0.34 1.69 .310 2.58 0.90 4.25 42.3% .316
a

Fisher's exact test (2-tailed) comparing distributions of subjects with dental caries in permanent teeth.

b

Difference: Difference of mean values of DMFS between the non-FMR group and the other FMR groups.

c

Welch's t test (2-tailed) comparing mean DMFS between the non-FMR group and the other FMR groups.

CI, confidence interval; DMFS, decayed, missing, and filled surfaces; FMR, fluoride mouth rinse.