Table 3.

Comprehensive Item Analysis and Descriptive Statistics for SFSS-Youth Items and Summary Scores

Item No*	Item	N	mean	SD	skewness	kurtosis	CORR	Primary Factor Loading	MEASURE	INMSQ	OUTMS	DISCR
1	Feel unhappy	758	2.95	1.24	0.02	−0.81	0.60	0.63	−0.54	0.79	0.86	1.10
2	Get in trouble	753	2.79	1.27	0.16	−0.91	0.53	0.57	−0.40	0.96	1.06	0.86
3	Lack of energy	751	2.41	1.27	0.49	−0.77	0.39	0.40	−0.05	1.24	1.49	0.61
4	Disobey	750	2.66	1.24	0.27	−0.76	0.57	0.60	−0.28	0.86	0.88	1.07
5	Bully	751	1.64	0.95	1.53	1.91	0.45	0.47	0.84	1.07	0.99	0.98
6	Afraid others laugh	759	1.97	1.26	1.09	0.04	0.52	0.52	0.41	1.24	1.13	1.00
7	Hard to wait turn	758	2.04	1.19	0.94	0.00	0.51	0.55	0.33	1.06	1.04	1.01
8	Nervous/shy	755	2.38	1.29	0.52	−0.76	0.48	0.49	−0.02	1.14	1.19	0.88
9	Cant' sit still	755	2.61	1.36	0.32	−1.07	0.57	0.62	−0.24	1.02	1.01	0.99
10	Cry easily	756	2.24	1.38	0.77	−0.67	0.51	0.52	0.12	1.28	1.30	0.90
11	Annoy others	755	2.23	1.29	0.73	−0.53	0.61	0.54	−0.20	0.86	0.84	1.18
12	Argue	757	2.57	1.29	0.34	−0.87	0.52	0.65	0.12	1.12	1.08	0.97
13	Throw things	754	1.98	1.15	0.92	−0.13	0.53	0.53	0.26	0.94	0.90	0.98
14	Interrupt others	750	2.54	1.18	0.39	−0.52	0.62	0.56	−0.38	0.84	0.86	1.15
15	Lie to get things	753	2.10	1.15	0.91	0.11	0.52	0.56	−0.17	0.87	0.96	0.94
16	Temper	757	2.74	1.36	0.26	−1.04	0.63	0.67	−0.35	0.89	0.86	1.19
17	Worry	756	3.04	1.36	−0.03	−1.13	0.60	0.62	−0.62	0.94	0.97	1.01
18	Can't get along	756	2.47	1.28	0.51	−0.73	0.61	0.67	−0.11	0.87	0.85	1.09
19	Feel worthless	756	2.06	1.30	0.93	−0.35	0.64	0.66	0.30	1.02	0.90	1.19
20	Hard to have fun	757	2.06	1.21	0.86	−0.25	0.46	0.49	0.30	1.17	1.28	0.90
21	Peers in trouble	757	2.19	1.23	0.75	−0.41	0.42	0.47	0.17	1.22	1.21	0.79
22	Can't pay attention	760	2.77	1.30	0.16	−0.98	0.49	0.66	0.39	1.07	1.09	0.95
23	Trouble sleeping	756	2.34	1.39	0.62	−0.90	0.58	0.61	0.02	1.13	1.10	1.03
24	Feel tense	752	2.28	1.28	0.64	−0.66	0.63	0.66	0.08	0.89	0.88	1.21
25	Drink alcohol1	764	1.26	0.68	2.87	8.37	0.22	0.21	1.48	1.46	1.37	0.96
26	Use drugs1	760	1.26	0.75	3.25	10.67	0.19	0.16	1.47	1.76	1.71	0.93
Total SFSS Scale Score		760	50.10	10.01	0.37	−0.22
Total Externalizing		761	50.14	10.73	0.39	−0.22
Total Internalizing		759	50.01	12.03	0.54	−0.38
Short Form A		755	50.03	10.08	0.42	−0.08
Short Form B		754	50.14	10.80	0.42	−0.22

^*Items in order as found on measure

¹Items not included in total scale score

Note: Bolded items may be out of desired range for statistic; SD = Standard Deviation; CFA = Confirmatory Factor Analysis standardized factor loadings; Corr = Correlation with total; Measure = item difficulty; Discrim = Discrimination