Variable	Mean	SD	Skewness	Kurtosis
ISI_1a	0.97	1.08	1.05	0.45
ISI_1b	1.06	1.14	0.85	0.18
ISI_1c	0.88	1.04	0.93	−0.06
ISI_2	2.01	1.05	−0.03	−0.70
ISI_3	1.67	1.04	0.19	−0.67
ISI_4	1.02	1.04	0.71	−0.43
ISI_5	1.46	1.15	0.47	−0.64

