Table 3.

Mixed‐effect regression model estimates (95% CI) for volume (ml) of wine consumed per 14‐day period (n = 166).

				95% CI for estimate
	Estimate (SE)	t‐value	P‐value	Lower	Upper
Intercept	277.8 (547.5)	0.51	0.612	−781.7	1337.8
Bottle size 75 cl (ref: 50 cl)	191.1 (76.5) *	2.49	0.013	42.03	339.2
Intervention period (ref: period 1)	−80.5 (74.1)	−1.08	0.278	−225.1	63.04
Intervention order (ref: 50 cl first)	32.8 (197.0)	0.17	0.878	−348.5	413.7
Baseline consumption (ml)	2.24 (0.16) **	13.8	< 0.001	1.93	2.56
Guest consumption (ml)	0.55 (0.09) **	5.75	< 0.001	0.36	0.74
Out‐of‐home consumption (ml)	−0.03 (0.06)	−0.56	0.578	−0.15	0.08
Non‐study wine consumption at home (ml)	0.004 (0.074)	0.05	0.956	−0.14	0.15
Price (£) per litre	−4.41 (40.0)	−0.11	0.912	−82.8	72.9
‘Usual behaviour’ period duration (days)	−56.7 (15.1) **	−3.77	< 0.001	−85.9	−27.6
Number of wine drinkers in household	−28.4 (149.2)	−0.19	0.849	−316.9	260.4

^*Significant at the P < 0.05 level;

^**significant at the P < 0.01 level. CI = confidence interval; SE = standard error.