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. Author manuscript; available in PMC: 2021 Jun 1.
Published in final edited form as: Am J Med Genet C Semin Med Genet. 2020 May 25;184(2):414–427. doi: 10.1002/ajmg.c.31785

TABLE 2.

Participant demographics

Total (N = 105) Trisomy SCA (N = 90) Tetrasomy/Pentasomy SCA (N = 15) p-value
Age (years.): M ± SD, range
 Child 2.3 ± 1.61, 0–5.5 2.1 ± 0.16 3.7 (0.33) .000
 Parent respondent 37.4 ± 5.38, 21–49 38 ± 0.54 33.2 (1.3) .001
Age group .092
 Infant and toddler N = 52 (49.5%) 48 (53.3%) 4 (26.7%)
 Preschool N = 53 (50.5%) 42 (46.7%) 11 (73.3%)
SCA condition
 47,XXX 11 (10.5%) 11 (12.2%) .531
 47,XXY 72 (68.6%) 72 (80%)
 47,XYY 7 (6.7%) 7 (7.8%)
 48,XXYY 9 (8.6%) 9 (60%) .443
 48,XXXY 4 (3.8%) 4 (26.7%)
 49,XXXXY 1 (1%) 1 (6.7%)
 49,XXXXX 1 (1%) 1 (6.7%)
Child gender .692
 Male 93 (88.6%) 79 (87.8%) 14 (93.3%)
 Female 12 (11.4%) 11 (12.2%) 1 (6.7%)
Parent respondent .443
 Mother 94 (89.5%) 79 (87.8%) 15 (100%)
 Father 10 (9.5%) 10 (11.1%) 0 (0%)
 Other 1 (1%) 1 (1.1%) 0 (0%)
Responding parent’s Education .011
 ≤ Bachelor’s degree 59 (56.2%) 46 (51.1%) 13 (86.7%)
 Advanced degree 46 (43.8%) 44 (48.9%) 2 (13.4%)
Second parent’s education .227
 ≤ Bachelor’s degree 76 (72.4%) 63 (70%) 13 (86.7%)
 Advanced degree 29 (27.6%) 27 (30%) 2 (13.3%)
Timing of SCA diagnosis <.001
 Prenatal 76 (72.4%) 74 (82.2%) 2 (13.3%)
 Postnatal 29 (27.6%) 16 (17.8%) 13 (86.7%)
Developmental diagnoses
 Speech language disorder 29 (27.6%) 19 (21.1%) 10 (66.7%) .001
 Autism spectrum disorder 5 (4.8%) 1 (1.1%) 4 (26.7%) .001
 Anxiety disorder 6 (5.7%) 5 (5.6%) 1 (6.7%)
 ADHD 3 (2.9%) 2 (2.2%) 1 (6.7%)
Regiona .140
 Northeast 16 (15.2%) 13 (14.4%) 3 (20%)
 Midwest 27 (25.7%) 20 (22.2%) 7 (46.7%)
 South 33 (31.4%) 31 (34.4%) 2 (13.3%)
 West 29 (27.6%) 26 (28.9%) 3 (20%)
a

US regions as designated by the US Census Bureau. Northeast: CT, MA, ME, NH, NJ, NY, PA, RI, VT; Midwest: IA, IL, IN, KS, MI, MN, MO, NE, ND, OH, SD, WI; South: AL, AR, DC, DE, FL, GA, KY, LA, MD, MS, NC, OK, SC, TN, TX, VA, WV; West: AK, AZ, CA, CO, HI, ID, MT, NM, NV, OR, UT, WA WY.