Table 1. Characteristics of 17 individuals with FXS reported by parents (N = 13).

Parent code	Case number	Gender	Current age (in completed years)	Age of first parental concern (in months)	Area of first parental concern	Age of diagnosis	Diagnosed after 2000	Number of signs
P1	6b	M	48	> 24	MB+SL	16 years 0 months	No	2
P1	5b	M	47	> 24	MB+SL	15 years 0 months	No	4
P2	8	M	21	19-24	MB+SL	3 years 0 months	No	1
P3	13b	F	19	19–24	MB+SL	10 years 0 months	Yes	1
P3	14b	F	18	19–24	MB+SL	8 years 6 months	Yes	1
P4	3b	M	19	< 12	MB	4 years 11 months	No	5
P4	1b	M	17	< 12	MB	3 years 5 months	No	6
P4	2b	M	17	< 12	MB	3 years 5 months	No	4
P5	10a	M	18	< 12	MB+O	10 years 0 months	Yes	7
P6	12	M	16	< 12	O	1 years 10 months	No	6
P7	16	F	14	19–24	SL+O	3 years 2 months	Yes	7
P8	17	M	10	19–24	SL	3 years 9 months	Yes	6
P9	11	M	10	< 12	MB+O	7 years 1 month	Yes	5
P10	7	M	10	13–18	MB	2 years 0 months	Yes	4
P11	9	M	7	< 12	MB+O	1 years 6 months	Yes	6
P12	4a	M	5	< 12	MB+SL+O	1 years 1 month	Yes	6
P13	15	M	2	< 12	MB	1 years 1 month	Yes	3

Note. Individuals with FXS (Cases 1–17) are sorted in descending order according to the current age. MB = motor behaviours; SL = speech/language; O = others.

^aThese cases were additionally diagnosed with ASD.

^bCases 5 and 6, Cases 13 and 14 as well as Cases 1, 2, and 3 are siblings, Cases 1 and 2 being twins.