Table 2.

Dental history and oral hygiene practice

Variable	Case subjects n (%)	Control subjects n (%)	p value
Reported age at first dental visit			<0.001
≤4 years	23 (24.2)	25 (41.0)
>4 years	30 (31.6)	32 (52.5)
Never visited a dentist before	42 (44.2)	4 (6.6)
Last dental visit			<0.001
<6 months	25 (26.3)	29 (47.5)
6–12 months	8 (8.4)	18 (29.5)
>12 months	20 (21.1)	10 (16.4)
Brushing frequency			0.014
≥2 times/day	25 (26.3)	24 (39.3)
Once a day	34 (35.8)	27 (44.3)
Occasional/never	36 (37.9)	10 (16.4)