TABLE 3.

DRS item statistics and reliability.

		Item 1	Item 2	Item 3	Item 4	Item 5	Overall
Response	Strongly agree (floor effect)	0	3.7	0	5.2	0
	Agree	2.5	14.0	4.6	17.2	3.7
	Neither agree nor disagree	14.1	23.6	22.4	23.2	22.7
	Disagree	36.0	28.9	33.5	28.1	33.8
	Strongly disagree (ceiling effect)	47.4	29.8	39.5	26.3	39.9
Item statistics	Mean	4.28	3.67	4.08	3.53	4.10	73.31
	Standard deviation	0.80	1.15	0.89	1.20	0.87	19.01
	Skewness	–0.851	–0.476	–0.545	–0.370	–0.524	–0.154
	Kurtosis	–0.040	–0.726	–0.717	–0.882	–0.753	–0.995
Internal reliability	Alpha if item drop	0.78	0.77	0.78	0.81	0.78
	Item-total correlation	0.65	0.63	0.63	0.65	0.54
	Cronbach’s alpha						0.81
	95% IC						[0.797, 0.835]
	McDonald’s omega						0.81
	95% IC						[0.791, 0.831]
	Gutmann’s lamda						0.81
	95% IC						[0.795, 0.833]
	Average inter-item correlation						0.496
	95% IC						[0.463, 0.529]

The scores of items 2 and 4 have been reversed. Strongly agree means low regret and strongly disagree means high regret. DRS: Item 1, It was the right decision; Item 2, I regret the choice that was made; Item 3, I would go for the same choice if I had to do it over again; Item 4, The choice did me a lot of harm; and Item 5, The decision was a wise one.