Skip to main content

Table 9 Regression analysis of absolute and relative risk of micronucleus prevalence data in relation to radiation dose, using all samples

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

Model number

Linear term for absolute risk (α) model (/1000 Scored cells /Gy)

Linear term for relative risk (α) (/Gy)

Exponential term (β) (/Gy)

Deviance (df)

p-value

 

AIC-minimizing background model (no dose term)

1

-

-

-

114.05 (80)

 
 

Absolute risk model in dose (1), background adjusted using AIC-minimizing model

2

2.90 (−1.26a, 7.66)

-

-

110.90 (79)

0.1379b

3

0.28 (−2.28a, 21.56)

-

3.64 (−9.59a, 16.87a)

110.73 (78)

0.7310c

 

Relative risk model in dose (2), background adjusted using AIC-minimizing model

4

-

0.94 (−0.66, 3.68)

-

112.50 (79)

0.3003b

5

-

0.06 (−0.74a, 0.86a)

4.57 (−16.45a, 25.60a)

111.72 (78)

0.4625d

  1. All p-values relate improvement in fit evaluated via an F-test
  2. aWald-based CI
  3. b p-value of improvement in fit over null model in dose (model number 1)
  4. c p-value of improvement in fit over linear model in dose (model number 2)
  5. d p-value of improvement in fit over linear model in dose (model number 4)
Back to article page

Environmental Health

ISSN: 1476-069X