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Table 6 Logistic analysis of effect of Mn concentration on semen quality

From: Effects of manganese on routine semen quality parameters: results from a population-based study in China

Mn Group

N

OR

95%CI

aOR

95%CI

lower

upper

lower

upper

Abnormal semen volume

 <20%

233

0.77

0.50

1.16

0.90

0.56

1.46

 20–39%

232

0.68

0.44

1.04

0.62

0.39

0.98

 40–59%

242

1.00

1.00

 60–79%

235

0.82

0.54

1.23

0.81

0.52

1.27

 80%

237

0.54

0.35

0.84

0.55

0.34

0.89

Oligospermia

 <20%

233

0.65

0.25

1.71

0.43

0.16

1.19

 20–39%

232

1.15

0.50

2.65

1.01

0.46

2.63

 40–59%

242

1.00

1.00

 60–79%

235

1.33

0.59

2.99

1.83

0.77

4.32

 80%

237

1.12

0.48

2.59

1.49

0.62

3.61

Abnormal sperm viability

 <20%

233

0.82

0.57

1.17

0.88

0.56

1.41

 20–39%

232

1.25

0.86

1.81

1.49

0.94

2.35

 40–59%

242

1.00

1.00

 60–79%

235

1.29

0.89

1.88

1.15

0.72

1.84

 80%

237

1.29

0.89

1.86

1.06

0.66

1.69

Asthenospermia

 <20%

233

0.76

0.53

1.09

0.91

0.58

1.42

 20–39%

232

1.16

0.81

1.68

1.34

0.87

2.06

 40–59%

242

1.00

1.00

 60–79%

235

1.23

0.86

1.77

0.93

0.59

1.46

 80%

237

1.56

1.07

2.25

1.33

0.85

2.10

Teratospermia

 <20%

230

1.35

0.79

2.31

0.98

0.52

1.89

 20–39%

220

1.33

0.77

2.29

1.01

0.54

1.88

 40–59%

230

1.00

1.00

 60–79%

221

0.71

0.38

1.31

0.92

0.46

1.84

 80%

219

1.24

0.71

2.16

2.27

1.18

4CP37

  1. Note: aOR means the odds ratio adjusted for area, abstinence interval, season, registered residence, age, educational level, income, smoking and drinking.