Figure 1
From: Exploratory survey study of long-term users of nicotine replacement therapy in Danish consumers
Equivalence ratio between current NRT use and recalled smoking. The regression line is based on a fractional polynomial regression and includes respondents using acute-acting single-dose NRT (N = 75). One outlier with high recalled cig/day and low NRT pieces/day was omitted (delta-beta = −8.1 SD). Logistic regression up to and including 25 cig/day showed a significant equivalence ratio of 0.86. No significance was found for those with recalled smoking of more than 25 cig/day.