Variable

Category

All

Sperm concentration

≥15 × 10⁶/ml

0 × 10⁶/ml

1 - 3/hpf

4 - 10/hpf

1 - 3/hpf

4 - 10/hpf

1 - 3/hpf

4 - 10/hpf

Freq.

%

Freq.

%

Freq.

%

Freq.

%

Freq.

%

Freq.

%

Age group

All

546

97.3

15

2.7

445

98.2

8

1.8

101

93.5

7

6.5

<30

6

1.1

0

1.1

4

0.9

0

0.0

2

2.0

0

0.0

30 - 39.9

187

34.2

4

34.1

150

33.7

3

37.5

37

36.6

1

14.3

40 - 49.9

265

48.5

6

48.3

220

49.4

4

50.0

45

44.6

2

28.6

50 - 59.9

80

14.7

4

26.7

65

14.6

1

12.5

15

14.9

3

42.9

≥60

8

1.5

1

6.7

6

1.3

0

0.0

2

2.0

1

14.3

BMI group

18.5 - 24.9

164

30.0

6

40.0

143

32.1

5

62.5

21

20.8

1

14.3

25.0 - 29.9

289

52.9

5

33.3

231

51.9

3

37.5

58

57.4

2

28.6

≥30

93

17.0

4

17.3

71

16.0

0

0.0

22

21.8

4

57.1

Mean (±sd)

1.44 (0.94)

1.41 (0.69)

1.56 (1.61)

t-test (P-value)

0.95 (0.17)

overweight (OW) vs. normal (NOR)

χ² (P-value)

1.56 (0.21)

1.06 (0.30)

0.16 (0.69)*

OR (95% CI)

0.47 (0.14, 1.57)

0.37 (0.09, 1.58)

0.72 (0.06, 8.41)

OW vs. NOR. 1 - 3/hpf

χ² (P-value)/OR (95% CI)

3.83 (0.05)/1.71 (1.00, 2.94)

OW vs. NOR 4 - 10/hpf

0.03 (0.85)/3.33 (0.20, 54.53)

obese (OB) vs. normal

χ² (P-value)

0.01 (0.93)

1.17 (0.28)

0.56 (0.45)*

OR (95% CI)

1.18 (0.32, 4.27)

undefined

3.82 (0.39, 37.01)

OB vs. NOR. 1 - 3/hpf

χ² (P-value)/OR (95% CI)

5.02 (0.02)/2.11 (1.09, 4.09)

OB vs. NOR 4 - 10/hpf

3.75* (0.05)/undefined