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Table 1 Parentally reported mean Strengths and Difficulties Questionnaire (SDQ) Total scores and (standardised) Factor Scores for "Internalising" and "Externalising" factors by International Obesity Taskforce (IOTF) classification

From: Modelling the relationship between obesity and mental health in children and adolescents: findings from the Health Survey for England 2007

IOTF Classification Status Mean SDQ Total (sd) Mean Internalising Factor Score (sd) Mean Externalising Factor Score (sd) N (%) Emotional Disorder Screen Positive N (%) Conduct Disorder Screen Positive
Obese (n = 305) 10.18 (6.1)* .17 (.4)* .21 (.6)* 53 (17%)* 48 (16%)**
Overweight (n = 760) 8.07 (5.4) .06 (.4) .02 (.6) 84 (11%) 84 (11%)
Normal weight (n = 2,704) 7.57 (5.4) -.01(.4) .00 (.6) 226 (8%) 275 (11%)
Underweight (n = 192) 7.59 (5.1) .01 (.4) .00 (.6) 16 (8%) 14 (7%)
  1. Note: *Difference between "Obese" and other groups significant at p < .001 level; **Difference between "Obese" and other groups significant at p < .01 level