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Table 1 Correlations between the severity of the three core features of the attention deficit/hyperactivity disorder and the severity of symptoms or characteristics of eating disorders (N=32)

From: The severity of ADHD and eating disorder symptoms: a correlational study

    

r(p)

Eating disorder symptom/characteristic

n a

M(SD)

Md

ADHD-SR: attention deficit scale

ADHD-SR: hyperactivity scale

ADHD-SR: impulsivity scale

BIS-11: sum score

Age (years)b

32

23.1 (5.6)

 

−0.152 (0.406)

−0.230 (0.205)

−0.035 (0.847)

−0.118 (0.519)

Age at onset (years)b

32

17.1 (4.0)

 

−0.011 (0.952)

−0.004 (0.984)

0.133 (0.467)

0.312 (0.082)

Current BMI (kg/m2)b

32

17.1 (3.8)

 

0.119 (0.515)

−0.185 (0.311)

0.107 (0.561)

0.395 (0.025)

Lowest BMI (kg/m2)b

32

14.8 (3.0)

 

0.109 (0.551)

−0.170 (0.353)

0.079 (0.667)

0.531 (0.002)

Highest BMI (kg/m2)b

32

22.2 (3.7)

 

0.248 (0.171)

−0.075 (0.684)

0.265 (0.143)

0.352 (0.048)

Weight phobiac

32

 

2.0

0.202 (0.267)

0.168 (0.357)

0.323 (0.071)

0.302 (0.093)

Dependence of self-esteem on body shapec

32

 

2.0

0.367 (0.039)

0.070 (0.705)

0.279 (0.122)

0.062 (0.738)

Body-image disturbancesc

32

 

3.0

0.344 (0.054)

0.332 (0.063)

0.064 (0.728)

0.370 (0.037)

Denial of seriousness of low body weightc

23

 

2.0

0.393 (0.063)

0.209 (0.339)

0.052 (0.813)

0.081 (0.712)

Periods (last 3 months)c

29

 

2.0

−0.028 (0.885)

−0.065 (0.739)

−0.160 (0.406)

−0.435 (0.018)

Severity of binge eating episodesc

32

 

2.0

−0.050 (0.787)

−0.249 (0.169)

0.171 (0.350)

0.218 (0.231)

Sense of lack of controlc

18

 

2.0

0.137 (0.588)

0.300 (0.227)

0.512 (0.030)

0.430 (0.075)

Self-induced vomitingc

32

 

1.0

−0.159 (0.385)

−0.203 (0.265)

0.232 (0.202)

0.252 (0.163)

Laxative abusec

32

 

0.0

0.269 (0.136)

0.107 (0.558)

0.143 (0.434)

0.504 (0.003)

Diureticsc

32

 

0.0

--- d

--- d

--- d

--- d

Appetite suppressantsc

32

 

0.0

--- d

--- d

--- d

--- d

Medication to increase thyroid metabolismc

32

 

0.0

--- d

--- d

--- d

--- d

Neglect of insulin treatmentc

32

 

0.0

--- d

--- d

--- d

--- d

Excessive fastingc

32

 

0.0

0.177 (0.334)

0.176 (0.335)

−0.093 (0.614)

0.415 (0.018)

Excessive exercisec

32

 

1.0

0.119 (0.518)

0.137 (0.455)

0.003 (0.988)

0.220 (0.225)

Enemasc

32

 

0.0

--- d

--- d

--- d

--- d

Use of vomitivesc

32

 

0.0

--- d

--- d

--- d

--- d

Frequency of binge eating episodesc

32

 

1.0

−0.037 (0.839)

−0.184 (0.314)

0.220 (0.225)

0.213 (0.243)

Frequency of inappropriate compensatory behaviorsc

32

 

1.0

−0.020 (0.914)

−0.168 (0.357)

0.108 (0.556)

0.214 (0.240)

Dieting or fastingc

32

 

2.0

0.394 (0.026)

0.329 (0.066)

0.312 (0.082)

0.226 (0.214)

Avoidance of fattening foodc

32

 

2.0

0.244 (0.177)

0.301 (0.094)

0.583 (0.000)

0.390 (0.028)

Limits for caloric intakec

32

 

0.5

0.273 (0.131)

0.377 (0.034)

0.439 (0.012)

0.259 (0.152)

Preoccupation with body slimnessc

32

 

2.5

0.447 (0.010)

0.271 (0.134)

0.311 (0.083)

0.411 (0.020)

M (SD)

   

7.3 (4.3)

6.3 (3.2)

3.0 (3.1)

62.7 (10.3)

  1. BMI=Body Mass Index, ADHD-SR=Attention Deficit Hyperactivity Disorder–Self-Report, BIS-11=Barratt Impulsiveness Scale, Version 11.
  2. Bonferroni corrected alpha=0.05/88=0.00057. Values in boldface are significant correlations when applying Bonferroni correction.
  3. aSome items were not applicable for all patients in the sample. For example, the item “Denial of seriousness of low body weight” was not applicable for 9 patients who were not underweight.
  4. bPearson’s product–moment correlation.
  5. cSpearman’s rank correlation. The items of the Structured Interview for Anorexia and Bulimia Nervosa–Expert Rating (SIAB–EX) were rated on a rank-ordered scale ranging from 0=no to 4=very severe/strong/frequent.
  6. dSymptom or characteristic was reported by none or only one patient. No correlations were calculated.