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Table 8 Influence of various potentially hazardous factors on micronuclei (MN) counts, using all samples (including 6 cancer cases)

From: Buccal mucosa micronuclei counts in relation to exposure to low dose-rate radiation from the Chornobyl nuclear accident and other medical and occupational radiation exposures

  

Number

%

Translocation rate

Mean MN / 1000 scored

SD

p-value heterogeneity

Dose (mSv)

0–19

66

59.5

4.17

5.84

0.5867

20–99

29

26.1

3.48

4.32

100–249

5

4.5

7.40

10.02

250–499

8

7.2

4.71

3.86

≥500

3

2.7

3.67

0.58

Age at buccal sample (years)

40–49

19

17.1

4.21

7.08

0.7879

50–59

33

29.7

3.37

4.90

60–69

40

36.0

5.34

5.74

≥70

19

17.1

2.99

3.77

Years since last exposure

< 12

14

12.6

3.81

4.66

0.4611

12–13

35

31.5

5.36

6.89

≥ 14

59

53.2

3.55

4.77

Unknown

3

2.7

3.67

3.51

Days of active work in Chornobyl exclusion zone

0

1

0.9

4.00

0.00

0.9364

1–29

21

18.9

4.22

5.18

30–59

46

41.4

3.85

5.30

60–89

20

18.0

6.03

7.89

90–179

15

13.5

3.39

3.41

≥ 180

8

7.2

2.54

2.98

Smoking status

Never smoker/missing

40

36.0

3.85

5.85

0.2428

Former and current smokers

71

64.0

4.33

5.31

Alcohol consumption status

Never drinker/missing

25

22.5

3.82

6.36

0.6316

Former and current drinkers

86

77.5

4.26

5.25

Work as industrial radiographer

Never

107

96.4

4.16

5.45

0.0475

Ever

1

0.9

15.00

0.00

Unknown

3

2.7

0.33

0.58

Work with potential radiation exposure (other than Chornobyl)

Never

94

84.7

4.30

5.62

0.6426

Ever

16

14.4

3.54

4.92

Unknown

1

0.9

1.00

0.00

Work in nuclear industry (including Chornobyl NPP)

Never

102

91.9

4.33

5.68

0.1705

Ever

6

5.4

3.11

0.84

Unknown

3

2.7

0.33

0.58

Work in army with potential radiation exposure (excluding Chornobyl)

Never

103

92.8

4.29

5.49

0.2015

Ever

6

5.4

3.17

6.34

Unknown

2

1.8

0.50

0.71

Work with potential radiation exposure (excluding Chornobyl)

Never

106

95.5

4.31

5.56

0.2436

Ever

3

2.7

1.33

2.31

Unknown

2

1.8

0.50

0.71

Radiotherapy for conditions other than cancer

Never

109

98.2

4.17

5.52

0.3851

Ever

1

0.9

6.67

0.00

Unknown

1

0.9

0.00

0.00

Any dental X-rays

Never

46

41.4

4.45

6.16

0.1184

Ever

65

58.6

3.95

5.00

Any chest X-rays

Never

54

48.6

3.40

5.47

0.1464

Ever

55

49.5

4.93

5.52

Unknown

2

1.8

3.33

4.71

Any bone X-rays

Never

62

55.9

4.70

6.33

0.2739

Ever

48

43.2

3.55

4.17

Unknown

1

0.9

0.00

0.00

X-rays other than dental, chest, bone

Never

77

69.4

3.72

5.48

0.0629

Ever

33

29.7

5.31

5.47

Unknown

1

0.9

0.00

0.00

Total

 

111

100.0

4.16

5.49

 
  1. Heterogeneity p-values are adjusted for overdispersion