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. Author manuscript; available in PMC: 2009 Sep 21.
Published in final edited form as: Dev Med Child Neurol. 2003 Oct;45(10):683–692. doi: 10.1017/S0012162203001270

Table V.

Self Concept and Depression by IQ group and sex; mean (SD) and % at risk

Measure Low IQ (56–84) Middle IQ (85–100) High IQ (101–130) pb
Piers–Harris Self-Concept Scale (n=47; 24M, 23F) (n=56; 23M, 33F) (n=57; 33M, 24F)
Total
 Overall 54.61 (10.77) 59.49 (11.81) 61.78 (12.20) 0.0079
 Male 60.31 (7.78) 60.24 (12.83) 61.62 (12.71) 0.0183
 Female 48.67 (10.34) 58.97 (11.23) 62.00 (11.72)
Anxiety
 Overall 8.23 (3.22) 9.54 (3.16) 10.04 (3.33) 0.0175
 Male 10.25 (2.27) 10.91 (2.92) 10.52 (3.01) 0.0426
 Female 6.13 (2.69) 8.58 (3.00) 9.38 (3.69)
Behavior
 Overall 12.71 (2.48) 13.32 (2.84) 13.81 (2.42) 0.1035
 Male 13.17 (2.37) 12.70 (3.02) 13.55 (2.69) 0.1342
 Female 12.24 (2.55) 13.76 (2.66) 14.17 (1.99)
Happiness
 Overall 8.72 (1.92) 9.79 (1.50) 9.79 (1.63) 0.0016
 Male 9.38 (1.61) 9.87 (1.42) 9.64 (1.73) 0.0326
 Female 8.04 (2.01) 9.73 (1.57) 10.00 (1.50)
Physical Appearance
 Overall 10.13 (3.14) 10.52 (2.85) 11.18 (2.83) 0.1789
 Male 11.33 (2.41) 10.83 (3.08) 10.86 (3.24) 0.0200
 Female 8.88 (3.38) 10.30 (2.70) 11.63 (2.14)
Popularity
 Overall 8.66 (3.07) 10.14 (3.43) 10.35 (3.75) 0.0310
 Male 9.83 (2.91) 10.61 (3.80) 10.48 (4.01) 0.2847
 Female 7.43 (2.79) 9.81 (3.17) 10.17 (3.43)
School
 Overall 11.65 (2.77) 12.63 (3.28) 13.70 (2.88) 0.0029
 Male 12.71 (2.66) 12.35 (3.17) 13.61 (3.07) 0.0547
 Female 10.55 (2.48) 12.82 (3.40) 13.83 (2.65)
Child Depression Inventory (n=48; 25M, 23F) (n=56; 22M, 34F) (n=57; 33, 24F)
Total score
 Overall 10.81 (6.61) 7.97 (6.59) 6.72 (6.54) 0.0066
31% 20% 12% 0.0631
 Male 9.06 (4.61) 7.66 (6.47) 6.85 (7.44) 0.2852
20% 23% 15% 0.1689
 Female 12.70 (7.93) 8.18 (6.75) 6.54 (5.20)
43% 18% 8%
a

For mean, p value is for ANOVA F-test for equality of means overall and for interaction of IQ group and sex when reporting results by sex. For percentage at risk (Child Depression Inventory only), p value is for Wald test from logistic model for IQ group overall and interaction of sex and IQ group when reporting results by sex. p value for comparing percentage at risk is below that for comparing means when both are present.

b

For CDI, at risk is defined as a score greater than 12.