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Table 1 Demographic characteristics of the CHR and non-CHR individuals

From: Screening of the college students at clinical high risk for psychosis in China: a multicenter epidemiological study

Variables CHR (n = 72) Non-CHR (n = 22,991) t / χ2/ U p
Age mean (S.D.) 18.3 (1.5) 18.4 (1.2) 0.38 0.707
Female (%) 38 (52.8) 10,990 (47.8) 0.71 0.399
Disciplines
 Arts (%) 19 (26.4) 2502 (10.9) 751,769.50 0.243
 Humanities (%) 4 (5.6) 1100 (4.8) 751,769.50 0.243
 Social sciences (%) 3 (4.2) 2482 (10.8) 751,769.50 0.243
 Natural sciences (%) 3 (4.2) 3355 (14.6) 751,769.50 0.243
 Applied sciences (%) 40 (55.6) 12,769 (55.5) 751,769.50 0.243
 Unclassified (%) 2 (2.8) 623 (2.7) 751,769.50 0.243
 Null (%) 1 (1.4) 160 (0.7) 751,769.50 0.243
PQ-B total score mean (S.D.) 18.0 (4.4) 8.5 (7.1) 18.22 < 0.001
PQ-B distress score mean (S.D.) 66.0 (22.1) 24.6 (21.1) 16.64 < 0.001