Table 1. Tattooed and non-tattooed group comparison using unpaired t-test.

Variable	Tattoo	n	M	SD	t	p	Cohen’s d	95% CI
Global score	Yes	103	3.40	.45	3.64	.001**	0.44	.09, .29
	No	209	3.20	.43
Lack of concern	Yes	103	3.72	.55	3.31	.001**	0.40	.09, .36
	No	209	3.49	.58
Not follow rules	Yes	103	3.04	.60	2.42	.02	0.29	.03, .30
	No	209	2.87	.55
Defend beliefs publicly	Yes	103	3.23	.72	1.92	.06	0.23	-.004, .32
	No	209	3.07	.65

n, subsample size; M, means; SD, standard deviation; t, t-test

**, p ≤ .001; CI, confidence interval.