Table 1 This table displays the p-values for the association between the Fagerstrom Test for Nicotine Dependence (FTND) and the markers listed above for the different statistical tests: the NPBAT where $E_x={\bar{x}}_c$ is the genotypic mean of the current smokers, NPBAT where $E_x={\bar{x}}_f$ is the genotypic mean of the former smokers, the Improved Score Test and a linear regression

From: A general semi-parametric approach to the analysis of genetic association studies in population-based designs