Table 1

Demographic details and total leucocyte, neutrophil, lymphocyte, and basophil blood counts per μl at baseline for smokers and non-smokers

SmokersNon-smokers
No.298136
Age (years)43.5 (12.2)45 (13.1)
M/F146/15365/72
Industrial/office workers99/19956/80
Smoking duration (years)22.6 (7.5)—
Daily tobacco consumption1-151 (cigarettes per day)21.9 (8.5)—
Pack years consumption1-151 25.4 (14.4)—
No. of cigarette smokers237—
Total blood leucocytes7.6 (7.4 to 7.9)5.8 (5.6 to 6.0)1-150
Total blood neutrophils4.5 (4.3 to 4.7)3.2 (3.0 to 3.4)1-150
Total blood lymphocytes2.4 (2.3 to 2.5)2.0 (1.9 to 2.2)
Total blood basophils0.02 (0.01 to 0.03)0.01 (0.00 to 0.02)**

  • Values are mean (SD) for demographic variables and mean (95% CI) for leucocyte blood counts.

  • ↵1-150 p<0.0001; **p<0.01, non-parametric test.

  • ↵1-151 See the text for definition.