T
1
= 1
T
1
= 0
T
2
=1
T
2
=0
T
2
=1
T
2
=0
Total
D
=1
s
11
s
10
s
01
s
00
s
D
=0
r
11
r
10
r
01
r
00
r
Total
N
11
n
00
n
01
n
00
n
Table 4:
Frequencies observed when comparing two binary tests in paired designs.