Table 1.

Occurrence of problem behaviour by gender and ASD diagnosis.

Behavioural Topography	Occurrence in males with FXS without ASD (n = 26)	Occurrence in males with FXS and ASD (n =16)	Occurrence in females with FXS without ASD (n = 9)	Occurrence in females with FXS and ASD (n = 2)
Defiance	23 (88%)	14 (87%)	9 (100%)	1 (50%)
Hyperactivity/Inattention	26 (100%)	14 (87%)	7 (78%)	0 (0%)
Tantrum	21 (80%)	12 (75%)	6 (67%)	2 (100%)
Stereotypy	13 (50%)	14 (87%)	3 (33%)	2 (100%)
Social Inappropriateness	17 (65%)	9 (56%)	4 (44%)	1 (50%)
Verbal Aggression	16 (61%)	9 (56%)	4 (44%)	1 (50%)
Physical Aggression	14 (53%)	11 (68%)	2 (22%)	2 (100%)
Anxiety	14 (53%)	6 (37%)	4 (44%)	1 (50%)
Lack of Personal Safety	9 (34%)	6 (37%)	3 (33%)	1 (50%)
Verbal Stereotypy	14 (53%)	3 (18%)	1 (11%)	0 (0%)
Incontinence	7 (26%)	8 (50%)	0 (0%)	1 (50%)
Sleep Issues	2 (7%)	10 (62%)	3 (33%)	1 (50%)
Elopement	5 (19%)	9 (56%)	0 (0%)	1 (50%)
Clingy	6 (23%)	2 (12%)	4 (44%)	1 (50%)
Self-Injury	3 (11%)	9 (56%)	0 (0%)	1 (50%)
Property Destruction	6 (23%)	6 (37%)	0 (0%)	0 (0%)
Overeating	2 (7%)	4 (25%)	0 (0%)	0 (0%)
Stealing	1 (3%)	4 (25%)	0 (0%)	0 (0%)
Vomiting	1 (3%)	2 (12%)	0 (0%)	0 (0%)
Undressing	2 (7%)	1 (6%)	0 (0%)	0 (0%)