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. 2020 Jul 6;20:190. doi: 10.1186/s12903-020-01182-8

Table 1.

Characteristic oral health in adolescents from 12 to 14 years from Mexico

DMFT < 5n = 165 DMFT ≥ 5n = 256 Value p
Age 12.3 (±0.53) 12.4 (±0.55) 0.055a
Sex
 Boys 90 (54.6) 108 (42.2) 0.013b
 Girls 75 (45.4) 148 (57.8)
Toothbrushing frequency
  < 2 times a day 119 (72.1) 160 (62.5) 0.042b
  ≥ 2 times a day 46 (27.9) 96 (37.5)
Oral hygiene (OHI-S)
 Good hygiene 33 (20.0) 82 (32.0) 0.007b
 Poor hygiene 132 (80.0) 174 (68.0)
Dental Calculus
 No 111 (67.3) 186 (72.7) 0.237b
 Yes 54 (32.7) 70 (27.3)
Mother’s level of education
 Primary or less 35 (21.2) 60 (23.4) 0.027b
 Secondary 53 (32.1) 109 (42.6)
 Technical or University 77 (46.7) 87 (34.0)

aWilcoxon rank-sum (Mann-Whitney) test bChi-squared test