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Table 2 Regression coefficients and partial correlation coefficients for urinary cotinine concentration in a multiple regression model

From: Smoking cigarettes of low nicotine yield does not reduce nicotine intake as expected: a study of nicotine dependency in Japanese males

Variable Regression coefficients Partial correlation coefficients
  B p r p
Figure 1     
Intercept 5.270 <0.001   
Nicotine yield by machine 0.762 0.001 0.23 <0.001
Number of cigarettes consumed 0.045 <0.001 0.43 <0.001
Interaction -0.012 0.16   
Figure 2     
Intercept 4.994 <0.001   
Nicotine yield by machine 0.793 0.001 0.18 <0.001
FTND score 0.268 <0.001 0.52 <0.001
Interaction -0.079 0.057   
  1. FTND: Fagerström Test for Nicotine Dependence