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. Author manuscript; available in PMC: 2023 Feb 1.
Published in final edited form as: Biol Psychiatry Cogn Neurosci Neuroimaging. 2021 Apr 28;7(2):171–179. doi: 10.1016/j.bpsc.2021.04.011

Table 1.

Demographic Characteristics

Characteristic HC (n = 190) CHR-NC (n = 375) CHR-C (n = 61) Statistical Test for Significance (2-Tailed) P value Post Hoc Tukey Test
Age, mean (SD), range 20.8 (4.6), 12 – 34 19.2 (3.9), 12 – 34 18.7 (3.6), 12 – 28 F = 10.6 < .001 HC > CHR-NC, CHR-C
Male gender, No. (%) 101 (53.2) 224 (59.7) 39 (63.9) χ2 = 3.2 .21 NA
Education level, mean (SD) 13.1 (3.6) 11.5 (2.8) 11.3 (2.6) F = 18.6 < .001 HC > CHR-NC, CHR-C
Paternal education score, mean (SD) 6.5 (1.6) 6.3 (1.7) 6.4 (1.8) F = .97 .38 NA
Maternal education score, mean (SD) 6.7 (1.5) 6.3 (1.6) 6.6 (1.7) F = 4.2 .01 CHR-NC < HC, CHR-C
Race/ethnicity, No. (%)
White 107 (56.3) 224 (59.7) 32 (52.5) χ2 = 1.5 .48 NA
Hispanic or Latino 28 (14.7) 69 (18.4) 9 (14.8) χ2 = 1.4 .49 NA
Black 35 (18.4) 58 (15.5) 9 (14.8) χ2 = 93 .63 NA
Asian 22 (11.6) 22 (5.9) 7 (11.5) χ2 = 6.4 .06 NA
First Nations 4 (2.1) 7 (1.9) 1 (1.6) χ2 = .07 .97 NA
Multiracial 14 (7.4) 40 (10.7) 9 (14.8) χ2 = 3.2 .21 NA
LES, mean (SD) 57.9 (37.1) 104.5 (133.0) 107.2 (100.8) F = 12.1 < .001 HC < CHR-NC, CHR-C