Clinical and psychological correlates of health-related quality of life in obese patients

Table 2 Weight history, scores on the Binge Eating Scale and Symptom CheckList-90 by obesity classes.

	Class I Obesity^† n = 723	Class II Obesity n = 529	Class III Obesity n = 634	P value
Weight history variables
BMI at age 20 (kg/m²)	23.8 ± 3.4	25.7 ± 4.6	28.3 ± 6.1	< 0.001*
Extra weight since age 20 (kg/year)	1.1 ± 0.8	1.4 ± 0.9	2.2 ± 1.7	< 0.001*
No. of previous dieting (per year)	0.20 (0 - 2.6)	0.21 (0 - 4.0)	0.27 (0 - 2.5)	< 0.001*
Age at first dieting (years)	29.6 ± 11.7	27.1 ± 11.2	25.4 ± 10.4	< 0.001*
Maximum weight loss (kg)	13.0 ± 8.4	15.9 ± 9.1	21.1 ± 11.5	< 0.001*
Cumulative weight loss (kg/year)	1.4 ± 1.9	1.9 ± 2.4	2.7 ± 3.1	< 0.001*
Binge Eating Scale
Score	12.9 ± 9.0	15.0 ± 9.5	16.8 ± 9.5	< 0.001*
Score in the range 17 - 26 (%)	24 (20 - 26)	27 (24 - 31)	29 (25 - 32)	0.064°
Score > 26 (%)	11 (9 - 13)	13 (11 - 16)	15 (13 - 18)	0.042°
Symptom CheckList-90
Global Severity Index	0.70 ± 0.53	0.79 ± 0.57	0.90 ± 0.62	< 0.001*
Mild distress (%)	15 (13 - 18)	14 (12 - 18)	20 (17 - 23)	0.016°
Moderate distress (%)	5 (3 - 6)	9 (7 - 12)	10 (7 - 12)	0.001°
Severe distress (%)	3 (2 - 5)	4 (3 - 6)	6 (5 - 8)	0.024°

Data are presented as mean ± SD, median and range, or as prevalence (95% confidence interval) of cases exceeding selected cut - offs.
^† For ranges of obesity classes, see Table 1.
*Kruskall-Wallis or °chi² test

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