Figure 2From: The impact of a minimal smoking cessation intervention for pregnant women and their partners on perinatal smoking behaviour in primary health care: A real-life controlled study Proportion of women who stopped smoking during pregnancy in Trondheim, Bergen and Norway 1999–2004. Data from the Medical Birth Registry in Norway. †p = 0.43 for difference in smoking cessation between Trondheim and Bergen 2002. *p = 0.03 for difference in smoking cessation between Trondheim and Bergen 2003. §p = < 0.001 for difference in smoking cessation between Trondheim and Bergen 2004.Back to article page