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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