Table 1.

Test-retest reliability of the Korean MEQ (N=21)

Item number	1st Test		2nd Test		Z	p†	Spearman Correlation
	Mean	SD	Mean	SD			r	p
1	3.62	1.02	3.43	.75	−1.41	.157	.831	<.0001
2	3.00	.71	3.14	.79	−.74	.461	−.328	.147
3	2.76	.83	2.62	.92	−1.13	.257	.802	<.0001
4	2.62	.92	2.81	.93	−1.10	.271	.604	<.01
5	2.86	.91	2.57	.75	−1.90	.058	.749	<.01
6	1.90	.77	1.76	.70	−1.00	.317	.620	<.01
7	2.48	.81	2.48	.51	.00)	1.000	.643	<.01
8	2.38	.87	2.29	.72	−.71)	.480	.614	<.01
9	2.67	.91	2.90	.89	−1.67	.096	.749	<.0001
10	3.33	.86	3.10	.63	−1.18	.238	.333	.140
11	4.19	1.99	4.19	1.78	.00	1.000	.814	<.0001
12	1.62	1.36	1.95	.92	−.92	.355	.227	.321
13	2.05	1.02	2.00	1.00	−.28	.782	.641	<.01
14	2.24	.83	2.38	.87	−.76	.448	.352	.118
15	2.86	1.01	2.71	.90	−.55	.582	.471	<.05
16	1.86	.73	1.81	.75	−.28	.782	.432	.051
17	3.24	1.18	3.10	1.04	−.87	.386	.587	<.01
18	3.19	.87	3.14	.73	−.30	.763	.215	.350
19	3.24	1.73	3.43	1.81	−1.00	.317	.854	<.0001
Total score	52.10	11.48	51.81	10.19	−.28	.776	.898	<.0001

^†:Wilcoxon signed ranks test

MEQ: Morningness-Eveningness Questionnaire