Table 1.

Individuals with fragile X syndrome included in the study

	Total Sample (n=1223)		Males (n=954)		Females (n=269)
Variable	n	%	n	%	n	%
Race/ethnicity
White non-Hispanic	926	75.7%	733	76.8%	193	71.7%
Black non-Hisp	89	7.3%	69	7.2%	20	7.4%
Asian	36	2.9%	28	2.9%	8	3.0%
Hispanic	156	12.8%	110	11.5%	46	17.1%
Other	16	1.3%	14	1.5%	2	0.7%
Age at Baseline [Mean (SD)]	1223	12.3 (9.3)	954	12.2 (9.0)	269	12.5 (10.3)
Age at Baseline -- categorized
0-5	282	23.1%	217	22.7%	65	24.2%
6-10	383	31.3%	298	31.2%	85	31.6%
11-18	337	27.6%	264	27.7%	73	27.1%
19+	221	18.1%	175	18.3%	46	17.1%
Number of Follow up (FU) Assessments
1	710	58.1%	549	57.6%	161	59.9%
2	247	20.2%	197	20.7%	50	18.6%
3+	266	21.7%	208	21.7%	58	21.5%
Time Followed in months (Only those with >1 FU Assessments) [Mean (SD)]	513	38.1 (20.4)	405	38.4 (20.6)	108	36.9 (19.7)
Height, cm [Mean (SD)]	1223	140.2 (27.0)	954	141.0 (28.1)	269	137.2 (22.5)