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Table 2 Means (and standard deviations) derived from the ASRQ and BSQ on sibling relationship quality and the YSR on psychopathological symptoms

From: Sibling relationships of female adolescents with nonsuicidal self-injury disorder in comparison to a clinical and a nonclinical control group

Measure Adolescents Siblings
NSSI (n = 56) M (SD) CC (n = 33) M (SD) NC (n = 50) M (SD) F(2, 134) η2 NSSI (n = 21) M (SD) CC (n = 11) M (SD) NC (n = 41) M (SD) F(2, 65) M (SD) η2
ASRQ
 Warmth 141.27 (38.12) 152.75 (26.82) 164.97 (25.69) 7.42** 0.10 155.62 (21.72) 159.15 (31.88) 154.00 (28.50) 0.14 0.00
 Conflict 57.81 (14.49) 57.88 (14.46) 56.64 (13.20) 0.12 0.00 56.11 (13.36) 51.78 (9.51) 55.28 (14.20) 0.33 0.01
 Rivalry 0.53 (0.47) 0.38 (0.41) 0.14 (0.23) 14.27** 0.18 0.26 (0.47) 0.10 (0.20) 0.31 (0.44) 0.91 0.03
BSQ
 Empathy 3.12 (0.99) 3.39 (0.88) 3.70 (0.70) 5.39** 0.08 3.36 (0.56) 3.44 (0.70) 3.36 (0.67) 0.06 0.00
 Boundaries 4.23 (0.71) 4.20 (0.67) 3.89 (0.88) 3.47* 0.05 2.25 (0.86) 1.89 (0.68) 2.06 (0.59) 0.96 0.03
 Similarity 2.41 (0.67) 2.55 (0.46) 2.87 (0.50) 9.29** 0.12 2.78 (0.42) 2.57 (0.39) 2.61 (0.57) 0.83 0.03
 Coercion 1.95 (0.68) 1.75 (0.68) 1.71 (0.63) 1.11 0.02 2.11 (0.59) 1.57 (0.19) 1.75 (0.52) 4.43* 0.12
YSR
 INT 35.33 (10.14) 21.70 (9.29) 8.95 (5.87) 120.76** 0.64 10.13 (7.49) 9.04 (6.84) 10.53 (7.92) 0.14 0.00
 EXT 19.94 (10.54) 11.61 (6.43) 9.33 (5.39) 23.42** 0.26 9.18 (5.03) 7.60 (5.14) 9.18 (5.03) 0.73 0.02
  1. NSSI adolescents with nonsuicidal self-injury, CC clinical control group, NC nonclinical control group, ASRQ Adult Sibling Relationship Questionnaire, BSQ Brother Sister Questionnaire, YSR Youth Self Report, INT Internalizing symptoms, EXT externalizing symptoms
  2. * p < 0.05
  3. ** p < 0.01