Table 2.

Means, standard deviations, and evidence of validity based on the relationship of the MI with other variables in both studies

		M	SD	Cronbach’s Alpha	Skewness z	Kurtosis z	Spearman’s correlation coefficient (rs)
							2	3	4	5	6
Study 1 (Clinical sample, n = 495)	1. MI	18.55	6.46	0.84	− 0.64	− 0.18	0.61**	0.55**	0.46**	− 0.40**	− 0.64**
	2. ODSIS	10.16	5.25	0.94	− 0.43	− 0.77		0.68**	0.47**	− 0.41**	− 0.64**
	3. OASIS	11.09	4.35	0.87	− 0.55	− 0.03			0.46**	− 0.35**	− 0.55**
	4. Neuroticism	32.86	7.14	0.76	− 0.43	− 0.03				− 0.37**	− 0.52**
	5. Extraversion	21.37	8.34	0.81	0.24	− 0.02					0.51**
	6. QLI	4.46	1.59	0.87	0.39	− 0.14
Study 2 (University students sample, n = 433)	1. MI	8.56	6.98	0.88	0.46	− 0.74	0.58**	0.53**	0.48**	− 0.24**	− 0.39**
	2. ODSIS	3.21	4.32	0.94	1.38	1.11		0.57**	0.56**	− 0.32**	− 0.40**
	3. OASIS	4.33	4.37	0.91	1.04	0.50			0.62**	− 0.26**	− 0.39**
	4. Neuroticism	21.39	9.36	0.88	0.19	− 0.61				− 0.39**	− 0.36**
	5. Extraversion	29.62	8.21	0.88	− 0.23	− 0.38					0.27**
	6. EQ-VAS	78.5	15.7		-1.21	1.74

Note: MI: Maladjustment Inventory; ODSIS: Overall Depression Severity and Impairment Scale; OASIS: Overall Anxiety Severity and Impairment Scale; Neuroticism: NEO-Five-Factor Personality Inventory Neuroticism; Extraversion: NEO-Five-Factor Personality Inventory Extraversion; QLI: Quality of Life Index; EQ-VAS: visual analog scale of the EuroQol-5D questionnaire; **p < .001