Table 2.

Mean, standard deviation (SD), coefficient of variation (CV) of the Montgomery-Åsberg Depression Rating Scale (MADRS) for severely obese patients (N = 374). Item-total correlation and commonalities

Item	Mean	SD	CV	α	h 2
Apparent sadness	1.10	1.70	1.55	0.92	0.79
Reported sadness	0.99	1.72	1.74	0.92	0.77
Inner tension	0.94	1.47	1.56	0.92	0.71
Reduced sleep	1.00	1.63	1.63	0.93	0.41
Reduced appetite	0.48	1.08	2.25	0.94	0.33
Concentration difficulties	0.74	1.39	1.88	0.93	0.62
Lassitude	0.76	1.38	1.82	0.92	0.67
Inability to feel	0.76	1.45	1.91	0.92	0.81
Pessimistic thoughts	0.63	1.35	2.14	0.92	0.74
Suicidal thoughts	0.33	0.99	3.00	0.93	0.49
Total	7.73	11.33	1.47	0.93	0.63a

CV Pearson’s coefficient of variation = SD/Mean

α Cronbach’s alpha coefficient of internal consistency

h ² Commonality

^aTotal percentage of data explained by unidimensional model of the MADRS