Skip to main content
. Author manuscript; available in PMC: 2021 Jun 7.
Published in final edited form as: Psychol Med. 2015 Mar 2;45(11):2275–2284. doi: 10.1017/S0033291715000227

Table 1.

Demographic and clinical characteristics of the groups

CHR (n = 735) Controls (n = 278) Statistics p
Sex
 Male 424 (57.6) 140 (50.4) χ2 = 4.23 0.04
 Female 311 (42.4) 138 (49.6)
Race
 First Nations 14 (1.9) 4 (1.4) χ2 = 6.69 0.67
 Asian 55 (7.4) 30 (10.8)
 Black 109 (14.8) 48 (17.3)
 Latin America/Middle East/White 461 (62.7) 166 (59.7)
 Native Hawaiian/Pacific Islander 3 (0.4) 1 (0.4)
 Inter-racial 92 (12.5) 29 (10.4)
Mean age, years (s.d.) 18.5 (4.2) 19.6 (4.7) t = 3.89 <0.001
Mean duration of education, years (s.d.) 11.3 (2.8) 12.7 (3.6) t = 6.43 <0.001

Data are given as number of participants (percentage) unless otherwise indicated.

CHR, Clinical high risk; s.d., standard deviation.