Table 3.

Quit ratio (95% Confidence interval) for daily cigarette smoking according to snus use in seven Norwegian surveys. P-values contrasts ‘never used’.

	Current status of snus use
Survey	Daily user	P	Occasional user	P	Former user	P	Never used
1	80.4 (74.9–85.9)	<0.001	32.0 (25.6–38.4)	<0.001	45.5 (39.9–51.1)	0.033	51.9 (50.1–53.7)
2	54.8 (45.2–64.9)	<0.001	21.7 (4.9–38.6)	0.895	31.1 (20.6–41.7)	0.178	22.9 (17.4–28.4)
3	81.1 (68.5–93.7)	0.010	42.7 (32.0–53.4)	0.001	85.7 (75.9–95.5)	<0.001	62.7 (56.9–68.4)
4	61.6 (53.5–69.7)	0.035	27.6 (19.7–35.5)	<0.001	–	–	52.5 (50.2–54.8)
5	75.4 (65.2–85.6)	<0.001	21.2 (14.8–27.6)	<0.001	53.9 (42.7–65.1)	0.015	44.9 (40.2–49.6)
6	89.7 (81.9–97.5)	<0.001	24.4 (17.1–31.8)	<0.001	83.9 (74.3–93.5)	<0.001	50.0 (45.1–54.9)
7	72.7 (68.2–77.2)	<0.001	17.4 (13.6–21.2)	<0.001	48.8 (44.4–53.2)	0.037	43.3 (40.6–46.0)