Table 2.

Questionnaire on oral health and dental hygiene habits in adults with autism spectrum disorder (n = 47) and a control group (n = 69)

Question	ASD group every day	Control group every day	P valuea
Do you brush your teeth in the evening?	37/46 (81 %)	61/69 (88 %)	0.238
Do you brush your teeth in the morning?	29/47 (62 %)	60/69 (87 %)	0.002
Do you use dental floss?	8/46 (17 %)	8/69 (12 %)	0.379
Does your gingiva bleed when you brush your teeth?	1/47 (2 %)	3/69 (4 %)	0.646b
Do you use an electric toothbrush?	8/46 (17 %)	21/69 (30 %)	0.101

ASD Autism spectrum disorder

^aChi² test

^bFisher’s exact test