. Author manuscript; available in PMC: 2016 Nov 25.

Published in final edited form as: Int J Health Econ Manag. 2015 Mar 22;15(2):241–268. doi: 10.1007/s10754-015-9169-x

Table 5.

Lack of Self-Control Over Alcohol Consumption

VARIABLES	Drinker-driver Groups
	Total	0	1–4	5+	0 vs. 5+	0 vs. 1–4	1–4 vs. 5+

	Means	Means	Means	Means	t-test	t-test	t-test
Difficulty of limiting drinking^a	1.51	1.35	1.78	1.91	−6.88^**	−10.33^**	−1.24
Very easy	0.59	0.70	0.39	0.36	5.69^**	10.28^**	0.47
Somewhat easy	0.31	0.24	0.44	0.41	−2.96^**	−7.04^**	0.56
Somewhat difficult	0.09	0.04	0.15	0.20	−5.37^**	−6.44^**	−0.97
Very difficult	0.01	0.01	0.01	0.03	−2.04^*	−0.32	−1.55

^**

Significant at the 1 percent level

Significant at the 5 percent level

This variable is coded on a scale of 1–4, where a response of 1 indicates “very easy” and a response of 4 indicates “very difficult.”