Equation

Obs.

R²

F

P-value

Volume

349

0.0512

9.34

0.0001

Sperm count ×10⁶/ml

0.0325

5.81

0.0033

Motility

0.0107

1.87

0.1560

Coefficient

SE

t

P-value

95% CI

Volume

Age

−0.04

0.01

−4.05

0.0001

−0.06, −0.02

BMI

−0.03

0.02

−1.59

0.113

−0.06, 0.01

Constant

4.63

0.65

7.14

0.0001

3.36, 5.91

Sperm concentration

Age

0.03

0.03

0.99

0.324

−0.03, 0.09

BMI

−0.18

0.06

−3.24

0.001

−0.29, −0.07

Constant

9.26

1.98

4.67

0.000

5.36, 13.16

Motility

Age

0.05

0.13

0.37

0.713

−0.21, 0.31

BMI

−0.48

0.25

−1.89

0.060

−0.98, 0.02

Constant

47.03

9.01

5.22

0.000

29.30, 64.76

Equation

Obs.

R²

F

P-value

Volume

349

0.0443

16.08

0.0001

Sperm concentration

0.0031

1.07

0.3004

Motility

0.0005

0.16

0.6865

Coefficient

SE

t

P-value

95% CI

Volume

Age

−0.04

0.01

−4.01

0.0001

−0.06, −0.02

Constant

3.83

0.41

9.32

0.000

3.02, 4.64

Sperm concentration

Age

0.03

0.03

1.04

0.300

−0.03, 0.09

Constant

4.28

1.27

3.36

0.001

1.77, 6.78

Motility

Age

0.05

0.13

0.40

0.687

−0.21, 0.31

Constant

33.84

5.72

5.91

0.000

22.58, 45.10

Equation

Obs.

R²

F

P-value

Volume

349

0.0062

2.18

0.141

Sperm concentration

0.0298

10.65

0.001

Motility

0.0103

3.61

0.058

Coefficient

SE

t

P-value

95% CI

Volume

BMI

−0.03

0.02

−1.48

0.141

−0.06, 0.01

Constant

2.95

0.51

5.79

0.000

1.95, 3.96

Sperm concentration

BMI

−0.18

0.06

−3.26

0.001

−0.29, −0.07

Constant

10.51

1.52

6.89

0.000

7.51, 13.51

Motility

BMI

−0.48

0.25

−1.90

0.058

−0.98, 0.02

Constant

49.15

6.92

7.10

0.000

35.53, 62.76