Adaptation and validation of the Online-Fear of Missing Out Inventory into Turkish and the association with social media addiction, smartphone addiction, and life satisfaction

Table 2 Psychometric properties of the On-FoMO Inventory at the item level

Item^#	Factor loading*^†	Item−total correlation	Mean (SD)	S	K	Infit MnSq	Outfit MnSq	Difficulty	Discrimination	DIF contrast across gender ^§^,^¶
Item 1	0.700	.53	2.72 (1.03)	−.21	−1.13	1.24	1.35	−0.98	0.71	0.31
Item 2	0.732	.61	2.03 (1.04)	.66	−.79	0.89	0.90	−0.58	1.01	−0.32
Item 3	0.783	.57	2.66 (1.06)	−.21	−1.18	0.97	0.92	−0.79	1.06	−0.34
Item 4	0.969	.73	2.17 (1.07)	.42	−1.11	1.03	0.97	0.82	1.01	−0.45
Item 5	0.925	.68	2.26 (1.05)	.33	−1.11	0.69	0.68	0.53	1.38	0.35
Item 6	0.531	.52	1.58 (.92)	1.45	.96	1.24	1.17	0.48	0.88	0.15
Item 7	0.743	.58	2.07 (1.12)	.60	−1.06	1.03	0.98	−0.67	0.97	0.15
Item 8	0.832	.66	2.28 (1.01)	.29	−.99	1.07	1.10	0.43	0.88	0.10
Item 9	0.797	.72	1.68 (.93)	1.18	.31	0.69	0.69	0.13	1.37	00
Item 10	0.558	.48	1.89 (1.01)	.76	−.66	1.50	1.50	−0.41	0.67	−0.15
Item 11	0.706	.68	1.54 (.87)	1.59	1.57	0.75	0.69	0.54	1.35	0.18
Item 12	0.429	.43	1.55 (.84)	1.44	1.13	1.28	1.09	0.53	0.80	00
Item 13	0.856	.64	2.04 (1.11)	.58	−1.08	0.80	0.82	−0.78	1.27	00
Item 14	0.751	.67	1.74 (.99)	1.06	−.15	0.86	0.81	0.06	1.20	−0.32
Item 15	0.652	.54	1.97 (1.02)	.68	−.74	1.33	1.43	−0.11	0.68	0.26
Item 16	0.523	.56	1.50 (.85)	1.67	1.86	1.17	1.12	0.71	0.93	0.46
Item 17	0.696	.56	2.05 (1.05)	.63	−.84	1.13	1.15	−0.29	0.84	−0.04
Item 18	0.757	.63	2.09 (1.02)	.55	−.85	0.69	0.71	−0.38	1.36	−0.36
Item 19	0.569	.60	1.77 (.82)	.97	.52	0.89	0.86	0.39	1.04	0.46
Item 20	0.699	.58	1.77 (1.03)	1.21	.22	0.96	0.80	0.39	1.31	−0.39

MnSq = mean square error; DIF = differential item functioning; S = Skewness; K = Kurtosis
*All factor loadings were significant at p < 0.001
^†Based on the first-order confirmatory factor analysis (CFA)
^§DIF contrast > 0.5 indicates substantial DIF
^#DIF contrast across gender = Difficulty for male-Difficulty for female

ISSN: 2050-7283