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Table 2 Effect of cigarette sticks smoked per day on semen parameters

From: Tobacco smoking is associated with decreased semen quality

Semen parameters Number of sticks
β r2 p-value
Volume (ml) −0.01 0.00 0.667
pH −0.13 0.42 0.001
Active (%) −1.31 0.15 0.004
Sluggish 0.22 0.01 0.358
Immobile −0.60 0.05 0.093
Morphology (%) −1.10 0.19 0.001
Viability (%) −1.44 0.17 0.002
Count (sperm/ml) −2.70 0.10 0.019
Total count (# of sperm) −7.43 0.07 0.037
PC (cells/HPF) 0.08 0.02 0.236
EC (cells/HPF) 0.01 0.00 0.650
RBC (cells/HPF) −0.01 0.01 0.491
  1. Shows linear regression of the effect of number of cigarette sticks smoked per day and the duration of the smoking on semen parameters. β slope of the line of best fit, r 2 coefficient of determination, PC pus cells, EC epithelial cells, RBC red blood cells, # number