Skip to main content
. Author manuscript; available in PMC: 2020 Mar 1.
Published in final edited form as: Mutat Res Genet Toxicol Environ Mutagen. 2019 Jan 18;839:21–35. doi: 10.1016/j.mrgentox.2019.01.007

Table 9:

A comparison of statistical analyses for liver, stomach and bone marrow after data curation

A: Liver
Table Sensitivity#
(95% CI)
PI BI Kappa
(95% CI)
PABAK
(95% CI)
AC1
(95% CI)
+ve and −ve 0.86
(0.72-0.99)
0.61 0.09 0.53c
(0.20e−0.85)
0.70b
(0.45c-0.86)
0.78b
(0.57c-0.99)
E calls +ve 0.86
(0.74-0.97)
0.64 0.07 0.44c
(0.14e −0.73)
0.67b
(0.43c-0.86)
0.76b
(0.58c-0.95)
E calls −ve 0.69
(0.53-0.84)
0.43 0.24 0.35d
(0.09e −0.60)
0.43c
(0.14e −.71)
0.51c
(0.24d-0.79)
B: Stomach
Table Sensitivity#
(95% CI)
PI BI Kappa
(95% CI)
PABAK
(95% CI)
AC1
(95% CI)
+ve and −ve 0.80
(0.35-1.00)
0.80 0.20 NA 0.60c
(−0.20f-1.00)
0.75b
(0.03 e −1.00)
E calls +ve 0.57
(0.13-1.00)
0.57 0.43 NA 0.14e
(−0.43h-0.71)
0.35d
(−0.59h-1.00)
E calls −ve 1.00
(0.42*−1.00)
0.29 −0.14 0.70b
(−0.01f-1.00)
0.71b
(0.14e −1.00)
0.74b
(0.11 e −1.00)
C: Colon
Table Sensitivity#
(95% CI)
PI BI Kappa
(95% CI)
PABAK
(95% CI)
AC1
(95% CI)
+ve and −ve 1.00
(0.63*−1.00)
1.00 0.00 NA 1.00a
(0.63*b-1.00)
1.00a
(0.63*b-1.00)
D: Bone Marrow
Table Sensitivity#
(95% CI)
PI BI Kappa
(95% CI)
PABAK
(95% CI)
AC1
(95% CI)
+ve and −ve 0.50
(0.14-0.86)
0.50 0.50 NA 0.00 f
(−0.60h-0.60)
0.20 e
(−0.60h-1.00)
E calls +ve 0.62
(0.31-0.92)
0.62 0.38 NA 0.23d
(−0.23g-0.69)
0.44c
(0.58h-0.95)
E calls −ve 0.38
(0.08-0.69)
0.39 0.62 NA −0.23g
(−0.69i-0.34)
−0.07 e
(−0.80i-0.65)
#

= ability of the comet assay to detect TGR positives

*

= Clopper-Pearson Lower Limit

CI = confidence interval

PI = prevalence index

BI = bias index

a

= very good agreement (0.81-1.00)

b

= good agreement (0.61-0.80)

c

= moderate agreement (0.41-0.60)

d

= fair agreement (0.21-0.40)

e

= poor agreement (<0.20)

f

= some disagreement (0 to −0.20)

g

= fair disagreement (−0.21 to −0.40)

h

= moderate disagreement (−0.41 to −0.60)

i

= substantial disagreement (−0.61 to −0.80)