Table 4.

Inter-item correlation of the five items of the WHO-5

Item	1	2	3	4	5
1. I have felt cheerful and in good spirits.	-	0.78	0.79	0.70	0.75
2. I have felt calm and relaxed.		-	0.75	0.73	0.67
3. I have felt active and vigorous.			-	0.71	0.76
4. I woke up feeling fresh and rested.				-	0.71
5. My daily life has been filled with things that interest me.					-

Note: All values are significant (p < 0.001).