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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Schizophr Res. 2013 Sep 20;150(0):498–504. doi: 10.1016/j.schres.2013.08.038

Table 2.

Baseline demographics, clinical characteristics, and social cognitive performance

Variable Clinical High
Risk
(n=147)
Help-Seeking
Control
(n=85)
Converters
(n=28)
Non-
converters
(n=204)
P
Prodromal and
Control
Converter and Non-
converter

Sex, n (%)
χ2=0.80 (df=1)
Z=−.64
t=−.607 (df=225)
t=−.259 (df=225)
Male 85 (57.8%) 44 (51.8%) 14 (50.0%) 115 (56.4%)
Female 62 (42.2%) 41 (48.2%) 14 (50.0%) 89 (43.6%)

Age, mean (SD) 19.79 (4.68) 19.41 (4.08) 19.68 (4.43) 19.45 (4.81)

Race, n (%) χ2= 1.26 (df= 4)
Z=−1.47
White 115 (78.2%) 65 (76. 5%) 19 (67.9%) 161 (78.9%)
Black or African American 12 (8.2%) 8 (9.4%) 4 (14.3%) 16 (7.8%)
Canadian Aboriginal/Native 0 (0%) 0 (0%) 0 (0%) 0 (0%)
American/American Indian or Alaskan
Native
Asian
11 (7.5%) 4 (4.7%) 3 (10.7%) 12 (5.9%)
Native Hawaiian or Other Pacific Islander 1 (0.7%) 0 (0%) 0 (0%) 1 (0.5%)
Mixed 8 (5.4%) 8 (9.4%) 2 (7.1%) 14 6.9%)

Spanish/Hispanic/Latino, n (%) χ2= 3.54 (df=1)
Z=−1.25
Yes 11 (7.5%) 13 (15.3%) 1 (3.6%) 23 (11.3%)
No 136 (92.5%) 72 (84.7%) 27 (96.4%) 181 (88.7%)

Current marital status, n (%) χ2= .79 (df=2)
Z=−1.60
Common law or legal married 7 (4.8%) 3 (3.5%) 3 (10.7%) 7 (3.4%)
Widowed 0 (0%) 0 (0%) 0 (0%) 0 (0%)
Divorced 0 (0%) 0 (0%) 0 (0%) 0 (0%)
Separated 1 (.7%) 0 (0%) 0 (0%) 1 (0.5%)
Never married 139 (94.6%) 82 (96.5%) 25 (89.3%) 196 (96.1%)

Currently living with a significant other, n (%) χ2=1.64 (df= 1)
Z=−1.73
Yes 16 (10.9%) 5 (5.9%) 5 (17.9%) 16 (7.8%)
No 131 (89.1%) 80 (94.1%) 23 (82.1%) 188 (92.2%)

Education, n (%)
χ2= 3.10 (df= 8)
Z=−.15
Did not complete High School n (%) 64 (43.5%) 40 (47.1%) 14 (50.0%) 90 (44.1%)
GED/High School diploma, n (%) 1 (.7%) 0 (0%) 0 (0%) 1 (0.5%)
Some college, did not graduate, n (%) 13 (8.8%) 9 (10.6%) 1 (3.6%) 21 (10.3%)
Community college or Technical School Degree, n (%) 50 (34.0%) 26 (30.6%) 7 (25.0%) 69 (33.8%)
College graduate, n(%) 7 (4.8%) 3 (3.5%) 2 (7.1%) 8 (3.9%)
College graduate and some Master’s level course, n (%) 6 (4.1%) 4 (4.7%) 3 (10.7%) 7 (3.4%)
Master’s degree completed, n (%) 4 (2.7%) 1 (1.2%) 1 (3.6%) 4 (2.0%)
Advanced degree courses, not graduated, n (%) 2 (1.4%) 1 (1.2%) 0 (0%) 3 (1.5%)
Advanced degree completed, n (%) 0 (0%) 1 (1.2%) 0 (0%) 1 (0.5%)
If you did not complete High School or obtain GED, indicate # of years of education: M (SD) 8.89 (1.86) 9.00 (2.03) 9.14 (1.75) 8.90 (1.95) t= 0.28 (df= 102)
Z=−.38

Attended special education classes, n (%) χ2= 0.39 (df= 1)
Z=−.16
Yes 23 (15.6%) 16 (18.8%) 5 (17.9%) 34 (16.7%)
NO 124 (84.4%) 69 (81.2%) 23 (82.1%) 170 (83.3%)

Failure to complete an educational program, n (%) χ2=1.47 (df=1)
Z=−.90
Yes 36 (24.5%) 15 (17.6%) 8 (28.6%) 43 (21.1%)
NO 111 (75.5%) 70 (82.4%) 20 (71.4%) 161 (78.9%)

Parents Education, n (%) χ2= 5.16 (df= 9)
Z=−.21
Did not complete High School, n (%) 7 (4.8%) 7 (8.3%) 3 (10.7%) 11 (5.4%)
Unknown, n (%) 4 (2.7%) 2 (2.4%) 1 (3.6%) 5 (2.5%)
GED/High School diploma, n (%) 20 (13.6%) 11 (13.1%) 2 (7.1%) 29 (14.2%)
Some college, did not graduate, n (%) 15 (10.2%) 12 (14.3%) 1 (3.6%) 26 (12.7%)
Community College or Technical School degree, n (%) 11 (7.5%) 7 (8.3%) 2 (7.1%) 16 (7.8%)
College graduate, n(%) 41 (27.9%) 26 (31.0%) 11 (39.3%) 56 (27.5%)
College graduate and some Master’s level course, n (%) 6 (4.1%) 2 (2.4%) 3 (10.7%) 5 (2.5%)
Master’s degree completed, n (%) 23 (15.6%) 8 (9.5%) 2 (7.1%) 29 (14.2%)
Advanced degree courses, not graduated, n (%) 2 (1.4%) 2 (2.4%) 0 (0.0%) 4 (2.0%)
Advanced degree completed, n (%) 18 (12.2%) 7 (8.3%) 3 (10.7%) 22 (10.8%)
If he/she did not complete high school or obtain GED, indicate # of years of education: M (SD) 8.13 (2.61) 9.29 (2.43) 4.67 (.58) 9.82 (1.33) t= .85 (df= 12)
Z=−2.63**

IQ Score, mean (SD) 111.75 (19.03) 111.94 (17.12) 103.2 (22.23) 112.97 (16.87) t=−.06 (df=176)
Z=−1.87

Baseline total SOPS symptoms, mean (SD) t=−.33 (df=230)
t=−4.10 (df=230)****
Z=−7.562****
t=−2.51 (df=230)*
t=−.93 (df=230)
t=−2.33 (df=230)*
t=−3.22 (df=230)**
t=−3.24 (df=230)**
Negative symptoms 8.51 (5.86) 8.24 (6.32) 12.64 (6.38) 7.83 (5.75)
Positive symptoms 10.90 (3.04) 6.47 (4.34) 11.11 (4.01) 9.03 (4.12)
Disorganized symptoms 4.09 (2.77) 3.72 (3.15) 5.14 (2.64) 3.79 (2.92)
Total general symptoms at basline 6.94 (4.03) 5.16 (4.06) 8.61 (3.78) 5.97 (4.08)

Baseline Social cognitive performance
t=.09 (df=229)
t=2.23 (df=229)*
t=.38 (df=228)
t=−.97 (df=228)
t=−1.26 (d=228)
t=.062 (df=228)
Eyes Task (Theory of Mind) 25.05 (4.93) 25.11 (4.91) 23.14 (3.86) 25.33 (4.99)
Trustworthiness Task: Trustworthiness 3.11 (32.28) 4.75 (30.67) 9.26 (38.27) 2.98 (30.68)
Trustworthiness Task: Approachability 17.98 (26.88) 22.84(30.26) 16.63(36.07) 20.19(27.06)

Mann-Whitney U tests were conducted if Levene’s test for equality of variances was significant (p<.05), indicated by Z scores.

*

= p<0.05,

**

= p<0.01,

***

= p<0.001,

****

=p<0.0001