Table 2.

Distribution of study population according to plaque status among different age-groups and gender

Age category	Plaque status
	Excellent	Good	Fair	Poor	Total	Mean ± SD
	n (%)	n (%)	n (%)	n (%)	N (%)
12 years	62 (20.4)	168 (55.3)	72 (23.7)	2 (0.7)	304 (100.0)	0.7 ± 0.54
13 years	82 (29.4)	137 (49.1)	53 (19.0)	7 (2.5)	279 (100.0)	0.63 ± 0.58
14 years	36 (22.6)	80 (50.3)	37 (23.3)	6 (3.8)	159 (100.0)	0.7 ± 0.57
15 years	24 (15.2)	92 (58.2)	39 (24.7)	3 (1.9)	158 (100.0)	0.75 ± 0.51
Total	204 (22.7)	477 (53.0)	201 (22.3)	18 (2.0)	900 (100.0)	0.68 ± 0.2
p valuea = 0.018*						0.146#
Male	117 (18.7)	344 (55.0)	150 (24)	15 (2.4)	626 (100.0)	0.73 ± 0.55
Female	87 (31.8)	133 (48.5)	51 (18.6)	3 (1.1)	274 (100.0)	0.58 ± 0.54
Total	204 (22.7)	477 (53.0)	201 (22.3)	18 (2.0)	900 (100.0)
p valuea < 0.001*						<0.001*

^*Statistically significant

^#Non-significant

^aChi-square test