Table 3.

Inter-correlations and descriptive statistics of study variables

	Variables					Total Score		Item Score
		1	2	3	4	M (SD)	95% C.I.	M (SD)	95% C.I.
1	Intolerance of uncertainty	1.00				36.40 (8.19)	36.06–36.74	3.03 (0.68)	3.00–3.06
2	Uncertainty about COVID-19	0.506**	1.00			30.77 (6.47)	30.50–31.04	3.08 (0.65)	3.05–3.10
3	Perceived stress	0.538**	0.360**	1.00		40.87 (6.81)	40.58–41.15	2.92 (0.49)	2.90–2.94
4	General sleep status	0.218**	0.159**	0.336**	1.00	4.82 (2.72)	4.71–4.94	/	/

** < 0.01