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. 2022 Mar 11;78(2):144–150. doi: 10.1136/thoraxjnl-2021-218436

Table 2.

Difference-in-difference estimates and 95% CIs for being an ex-, current and never-smoker from 2005 to 2010, stratified by sex (corresponding, online supplemental figure S2–S4)

Year Probability in Denmark compared with Switzerland in year 2006
Absolute difference in % (95% CI)
Ex-smoker Current smoker Never-smoker
Women Men Women Men Women Men
2005 1.4
(−1.3 to 4.0)
−6.2
(−9.1 to −3.3)
1.1
(−1.3 to 3.6)
5.4
(2.6 to 8.1)
−2.4
(−5.5 to 0.6)
0.8
(−2.3 to 3.9)
2006 ref. ref. ref. ref. ref. ref.
2007 6.8
(4.0 to 9.6)
0.5
(−2.6 to 3.7)
−5.2
(−7.7 to −2.7)
−2.5
(−5.4 to 0.4)
−1.4
(−4.6 to 1.8)
2.0
(−1.4 to 5.5)
2008 3.3
(0.5 to 6.1)
−1.2
(−4.2 to 1.9)
−3.5
(−6.0 to −1.0)
0.5
(−2.4 to 3.4)
0.3
(−2.9 to 3.5)
0.6
(−2.7 to 3.9)
2009 5.4
(2.5 to 8.2)
−0.3
(−3.4 to 2.8)
−7.8
(−10 to −5.4)
−1.5
(−4.3 to 1.3)
2.6
(−0.7 to 5.8)
1.8
(−1.6 to 5.1)
2010 6.9
(4.1 to 9.8)
2.4
(−0.6 to 5.5)
−3.9
(−6.3 to −1.5)
−1.7
(−4.4 to 1.1)
−3.0
(−6.2 to 0.2)
−0.7
(−4.0 to 2.6)

The estimates in the table show the probability of being an ex-, current or never-smoker in Denmark from 2005 to 2010 in women and men compared with Switzerland in year 2006. For example, the probability of being an ex-smoker was 6.9% higher 3 years after the smoking ban implementation in 2010 for the Danish female population compared with the Swiss female population.

Ref, reference.