Table 1.
Demographic information and comparisons between FEP participants and healthy controls.
| Characteristic | Statistic | Total (N = 129) |
FEP (n = 86) |
Controls (n = 43) |
Statistic | Value | df | p |
|---|---|---|---|---|---|---|---|---|
| Demographics | ||||||||
| Age | M (SD) | 18.7 (2.9) | 18.5 (2.8) | 19.2 (3.0) | t | 1.29 | 125 | 0.200 |
| Sex | ||||||||
| Males | % (N) | 40.6 (52) | 44.7 (38) | 32.6 (14) | χ2 | 1.75 | 1 | 0.186 |
| Females | % (N) | 59.4 (76) | 55.3 (47) | 67.4 (29) | ||||
| Ethnicity | ||||||||
| Caucasian | % (N) | 82.8 (106) | 84.7 (72) | 79.1 (34) | χ2 | 0.64 | 3 | 0.425 |
| Other | % (N) | 17. 2 (22) | 15. 3 (13) | 20.9 (9) | ||||
| Education | ||||||||
| Total number of years of education/training | M (SD) | 12.6 (2.2) | 12.2 (2.1) | 13.3 (2.2) | t | 2.85 | 116 | .009a |
| Symptomatology | ||||||||
| BPRS total score | M (SD) | 49.2 (14.9) | 58.2 (9.4) | 31.6 (3.6) | t | 23.00 | 117.98 | <.001a |
| BPRS psychotic subscale | M (SD) | 11.1 (5.8) | 14.7 (3.4) | 4.1 (0.3) | t | 28.30 | 85.40 | <.001a |
| SANS total scoreb | M (SD) | 35.8 (18.3) | ||||||
| Functioning | ||||||||
| SOFAS | M (SD) | 63.2 (16.7) | 54.3 (11.9) | 80.7 (9.0) | t | 14.02 | 107.75 | <.001a |
Notes. Ns vary due to missing data. N = Valid number of participants; % = Valid percent of participants, M = Mean; SD; Standard deviation.
BPRS = Brief Psychiatric Rating Scale; SOFAS = Social and Occupational Functioning Assessment Scale. Average scores of BPRS Total and BPRS Psychotic among controls indicate few to no clinical symptoms. Overall sample SOFAS score within range of 61–70, indicating some difficulty in functioning but generally functioning well. Sample with FEP in range of 51–60, indicating moderate difficulty in functioning; and control sample in range of 81–90 (when rounded to nearest whole number), indicating good functioning in all areas.
Independent Samples Mann-Whitney U test (non-parametric) p values for variables not meeting normality assumptions of parametric t-test.
SANS (Scale for the Assessment of Negative Symptoms) was not administered to healthy controls.