Table 1

Mean scores (± standard deviation) for demographic and clinical variables between groups, tested by chi-square or ANOVA
Stage 1b (n = 94) Stage 2/3 (n = 100) Controls (n = 50) Significance Test [p] Post hoc
1b v 2/3 1b v Ctrl 2/3 v Ctrl
Females, n (%) 58 (62%) 43 (43%) 29 (58%) χ2 (2, 244) = 7.4 [.025]
Age, years 22.2 ± 3.2 23.0 ± 3.3 23.0 ± 2.7 F (2, 243) = 2.2 [.118]
Age of onset, years 15.4 ± 3.3 17.6 ± 4.9 n/a F (1, 160.8) = 12.7 [.000]
Predicted IQ 103.0 ± 8.5 103.2 ± 10.8 106.0 ± 7.8 F (2, 242) = 1.9 [.148]
Education, years 12.8 ± 2.1 13.1 ± 2.4 14.8 ± 2.2 F (2, 243) = 13.7 [.000] *** ***
SOFAS 61.4 ± 11.3 56.4 ± 12.5 92.0 ± 3.2 F (2, 143.9) = 557.5 [.000] ** *** ***
HDRS total 12.9 ± 6.5 12.5 ± 8.5 2.0 ± 2.2 F (2, 150.2) = 149.6 [.000] *** ***
BPRS total 40.5 ± 9.6 42.7 ± 12.3 26.5 ± 2.7 F (2, 147.4) = 146.2 [.000] *** ***
K10 total 28.1 ± 7.7 26.0 ± 9.1 15.4 ± 5.1 F (2, 135.5) = 72.4 [.000] *** ***

Note: Significance levels for each Scheffé’s post-hoc comparison are depicted by: *** = p<.001; ** = p<.01.

Hermens et al.

Hermens et al. BMC Psychology 2013 1:8   doi:10.1186/2050-7283-1-8

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