Table 2.

Mean plaque score (OHI-S), by age, gender, and location.

Variable	N (%)	Plaque mean (SD)
Age
12-year-old	275 (55)	0.60 (0.36)
13-year-old	225 (45)	0.69 (0.44)
Gender$
Male	250 (50)	0.69 (0.50)
Female	250 (50)	0.66 (0.46)
Location$
Urban	338 (67.5)	0.66 (0.33)
Rural	163 (32.5)	0.67 (0.39)

^$No significant difference in the mean plaque score.