. 2021 Sep 27;18(19):10142. doi: 10.3390/ijerph181910142

Table 6.

Descriptive statistics and discriminant validity of subscales of shortened versions of the Depression Anxiety Stress Scale 21.

DASS Subscales	Samples	Korean DASS-12					DASS-13					Osman’s DASS-9					Modified DASS-9
DASS Subscales	Samples	MD	Q1–Q3	U	W	z	MD	Q1–Q3	U	W	z	MD	Q1–Q3	U	W	z	MD	Q1–Q3	U	W	z
Depression	Sample 1	5	2–9	53,363.0	544,899.0	−7.659	7	2–13	51,796.0	543,332.0	−8.014	4	1–8	53,045.0	544,581.0	−7.826	5	2–9	54,378.5	545,914.5	−7.384
Depression	Sample 2	2	0–4	53,363.0	544,899.0	−7.659	3	0–5	51,796.0	543,332.0	−8.014	1	0–3	53,045.0	544,581.0	−7.826	2	0–4	54,378.5	545,914.5	−7.384
Anxiety	Sample 1	2	0–5	55,078.5	546,614.5	−7.724	2	0–5	55,078.5	546,614.5	−7.724	2	0–4	55,800.0	547,336.0	−7.609	3	0–6	54,555.0	546,091.0	−7.940
Anxiety	Sample 2	0	0–2	55,078.5	546,614.5	−7.724	0	0–2	55,078.5	546,614.5	−7.724	0	0–1	55,800.0	547,336.0	−7.609	0	0–2	54,555.0	546,091.0	−7.940
Stress	Sample 1	5	2–8	54,327.5	545,863.5	−7.424	4	1–6	56,008.5	547,544.5	−7.096	3	1–4	57,678.5	549,214.5	−6.780	2	0–4	56,053.5	547,586.5	−7.316
Stress	Sample 2	2	0–5	54,327.5	545,863.5	−7.424	1	0–3	56,008.5	547,544.5	−7.096	1	0–3	57,678.5	549,214.5	−6.780	0	0–2	56,053.5	547,586.5	−7.316

MD: median, Q1: first quartile, Q2: third quartile, U: Mann Whitney U test, W: Wilcoxon test, all p values < 0.001. For the depression subscale on the DASS-8, MD (Q1–Q2) = 4 (1–7, sample 1) and 1 (0–3, sample 2), U = 50,965.0, W = 542,501.0, z = −8.229.