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. 2016 Oct 27;26(4):e1543. doi: 10.1002/mpr.1543

Table 1.

Descriptive statistics for the self‐report measures

M SD Skewness Kurtosis Range Ordinal alpha
YPARQ‐B total score 5.11 4.86 1.30 1.78 0–28 0.94
RADS
Dysphoric mood 16.18 4.39 0.60 0.02 8–32 0.76
Anhedonia 11.45 2.84 0.96 1.11 7–25 0.70
Negative self‐evaluation 12.77 4.24 1.12 1.13 8–32 0.83
Somatic complains 15.52 3.46 0.26 –0.09 7–28 0.78
SDQ
Emotional symptoms 3.21 2.38 0.62 –0.31 0–10 0.75
Conduct problems 2.02 1.70 1.05 1.26 0–10 0.72
Peer problems 1.88 1.84 1.33 2.00 0–10 0.74
Hiperactive 4.46 2.12 0.18 –0.30 0–10 0.71
Prosocial 8.34 1.76 –1.42 2.42 0–10 0.75
Total dificultes 11.57 5.51 0.55 0.00 0–30 0.84
SSI‐SM
Emotional 23.67 7.24 0.54 0.20 10–50 0.90
Physiological 10.96 3.47 1.08 1.83 6–27 0.78
Behavioural 10.37 3.20 1.04 1.98 6–29 0.79

Note: YPARQ‐B, Youth Psychosis At‐Risk Questionnaire – Brief; RADS, Reynolds Adolescent Depression Scale; SDQ, Strengths and Difficulties Questionnaire; SSI‐SM, Student Stress Inventory – Stress Manifestations.