Do not smoke cigarette (n = 88)

F (5,82) = 1.60

Prob > F = 0.17

R² = 0.1010

Root MSE = 18.75

SDFI

Coef.

SE

t

P > [t]

95% Confidence Interval

Age

0.26

0.25

1.01

0.32

−0.25, 0.76

BMI

0.33

0.51

0.64

0.52

−0.69, 1.35

Years trying to conceive

−0.47

0.36

−1.30

0.20

−1.18, 0.25

Count

0.02

0.09

0.19

0.85

−0.17, 0.40

Motility

−0.30

0.13

−2.29

0.02

−0.55, −0.04

_cons

29.87

16.25

1.84

0.07

−2.46, 62.19

Smoke cigarette (n = 23)

F (5, 17) = 5.62

Prob > F = 0.0031

R² = 0.3361

Root MSE = 15.60

SDFI

Coef.

SE

t

P > [t]

95% Confidence Interval

Age

0.28

0.28

0.97

0.34

−0.32, 0.88

BMI

−0.26

0.64

−0.40

0.69

−1.62, 1.10

Years trying to conceive

−1.28

0.65

−1.96

0.07

−2.660, 0.10

Count

0.39

0.09

4.49

0.0001

0.21, 0.57

Motility

−0.59

0.19

−3.14

0.006

−0.98, −0.19

_cons

53.58

24.45

2.19

0.043

1.99, 105.17