Table 2.

Effects of the alcohol planning intervention.

Variable	Sequence: intervention–control (AB) (n=66)			Sequence: control–intervention (BA) (n=70)			Test value	P value
	Period 1 (A)	Period 2 (B)	Within-subject difference (period 2−period 1)	Period 1 (B)	Period 2 (A)	Within-subject difference (period 2−period 1)
Number of alcoholic drinks on the previous day with friends or when going out, mean (SD)	2.79 (3.09)	3.68 (3.62)	0.89 (3.71)	4.21 (3.67)	3.43 (3.85)	−0.79 (4.69)	2.31a	.01
Binge drinking on the previous day with friends or when going out, n (%)	20 (30%)	23 (35%)	3 (5%)	25 (36%)	25 (36%)	0 (0.0%)	1.34b	.25

^at test for independent samples for the comparison of the within-subject difference between the condition sequences.

^bChi-square test for the comparison of binge drinking change in period 2 compared with period 1 between the condition sequences.