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. 2020 Mar 9;17(5):1764. doi: 10.3390/ijerph17051764

Table 1.

Demographics and change in parameters from baseline to follow-up among all students (n = 457).

Co-variate Baseline Follow-Up p-Value
Age (years) 18.2 ± 0.4 1
Sex (Male) 217 (47.5) 2
Daily brushing frequency (≥2 times) 374 (81.8) 387 (84.7) 0.249 3
Daily flossing (Yes) 26 (5.7) 68 (15.1) <0.001 3
Regular dental checkup (Yes) 70 (15.3) 66 (14.4) 0.643 3
OHI-S score 0.6 ± 0.6 0.6 ± 0.7 0.881 4
BOP (%) 28.7 ± 24.2 31.4 ± 23.0 0.040 4
DMFT 2.3 ± 2.8 2.9 ± 2.7 <0.001 4
BMI (kg/m2) 20.7 ± 2.8 21.0 ± 2.9 <0.001 4
Community periodontal index (CPI)
0 50 (10.9) 26 (5.7) <0.001 5
1 115 (25.2) 88 (19.3)
2 223 (48.8) 128 (28.0)
3 69 (15.1) 199 (43.5)
4 0 (0.0) 16 (3.5)
PPD ≥4 mm (Yes) 69 (15.2) 215 (47) <0.001 3

OHI-S, simplified oral hygiene index; BOP, bleeding on probing; DMFT, decayed, missing, and filled teeth; BMI, body mass index; PPD, probing pocket depth. 1 mean ± standard deviation, 2 number (%), 3 McNemar test, 4 paired t-test, 5 chi-square test.