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. Author manuscript; available in PMC: 2022 Mar 24.
Published in final edited form as: J Dev Behav Pediatr. 2021 Oct-Nov;42(8):656–665. doi: 10.1097/DBP.0000000000000939

Table 1.

Participant demographic data for the early childhood sample, school age sample and a subset of longitudinal participants seen at both timepoints

Cross-Sectional Longitudinal Subset
Early Childhood School Age T1 T2
Variable n = 50 n = 40 n = 25
Mean Age (SD) 3.96 (1.05) 10.9 (1.59) 4.12 (1.09) 10.40 (1.35)
Sex (Frequency; %)
 Females 19 (38) 18 (45) 11 (44)
 Males 31 (62) 22 (55) 14 (56)
NF Etiology (Frequency; %) Familial: 19 (38)
de novo: 31 (62)
Familial: 13 (32.5)
de novo: 27 (67.5)
Familial: 7 (28)
de novo: 18 (72)
Race/Ethnicity (Frequency; %)
 Caucasian 37 (74) 33 (82.5) 20 (80)
 African-American 5 (10) 4 (10) 3 (12)
 Latino 5 (10) - -
 Asian 1 (2) 1 (2.5) 1 (4)
 Mixed Ethnicity 2 (4) 2 (5) 1 (4)
Hollingshead SES Index Mean (SD) 41.92 (14.86) 46.13 (12.43) 43.04 (14.26) 44.99 (10.82)

Note: Cross-sectional refers to analyses of one timepoint. Longitudinal subset refers to analyses across early childhood and school age within the same participants. T1: early childhood visit for longitudinal subset. T2: school age visit for longitudinal subset. SES = Socioeconomic status. SD: Standard Deviation.