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. 2014 Feb 10;9(2):e87403. doi: 10.1371/journal.pone.0087403

Table 4. Regression Coefficients of the Association between Current Smoking and Biomarkers.

FEV1/FVC HDL Log CRP Leukocyte Monocyte Lymphocyte Granulocyte
Sex (Female = 1) 0.023*** 10.686*** 0.100*** −0.208* −0.035*** 0.074 −0.230**
Education 0.000 0.232** −0.006 −0.009 −0.001 −0.007 −0.002
Black 0.210*** 7.365*** 0.173*** −0.996*** −0.067*** 0.086* −1.033***
Hispanic 0.220*** −0.802 0.009 0.174 0.028 0.100 0.043
BMI 0.003*** −0.822*** 0.036*** 0.063*** 0.005*** 0.023*** 0.036***
Age (60–69) −0.020*** −0.988 0.047 0.105 0.014 0.025 0.060
Age (70–79) −0.038*** −2.553** 0.092* 0.448*** 0.027 −0.033 0.437***
Age (80+) −0.039*** −2.606* 0.187*** 0.960*** 0.075*** 0.027 0.841***
Smoking a −0.075*** −3.785** 0.231*** 2.210*** 0.140*** 0.437*** 1.636***
Age (60–69) by Smoking −0.011 2.210 −0.009 −0.524* −0.029 −0.024 −0.471*
Age (70–79) by Smoking 0.002 4.449* −0.010 −0.849** −0.058* −0.125 −0.688**
Age (80+) by Smoking 0.012 5.523* −0.129 −1.538*** −0.089* −0.344* −1.102***
Constant 0.689 5.049 65.926 0.121 5.049 1.516 3.223
R-squared .203 .172 .088 .149 .081 .042 .157
N 4075 4366 4334 4404 4323 4404 4323

* p<0.05; ** p<0.01; *** p<0.001

Results Based on separate OLS Regression Models

a

Smoking refers to current smoking