(b).

Nested PCR
UC	Vs	IBS	p = 0.060	Z = 1.88
UC	Vs	CC	p = 0.050	Z = 2.51
UC	Vs	HC	p < 0.001	Z = 9.16
IBS	Vs	CC	p = 0.210	Z = 1.25
IBS	Vs	HC	p < 0.001	Z = 9.04
CC	Vs	HC	p < 0.001	Z = 4.51
ViAb
UC	Vs	IBS	p = 0.36	Z = 0.91
UC	Vs	CC	p = 0.53	Z = 0.63
UC	Vs	HC	p = 0.25	Z = 1.15
IBS	Vs	CC	p = 0.98	Z = 0.05
IBS	Vs	HC	p = 0.77	Z = 0.29
CC	Vs	HC	p = 0.83	Z = 0.21
Widal
TO
UC	Vs	IBS	p = 0.080	Z = 1.77
UC	Vs	CC	p = 0.080	Z = 1.73
UC	Vs	HC	p = 0.530	Z = 0.62
IBS	Vs	CC	p < 0.001	Z = 3.61
IBS	Vs	HC	p = 0.130	Z = 1.51
CC	Vs	HC	p < 0.010	Z = 2.63
TH
UC	Vs	IBS	p < 0.001	Z = 3.70
UC	Vs	CC	p = 0.120	Z = 1.59
UC	Vs	HC	p < 0.001	Z = 4.52
IBS	Vs	CC	p = 0.280	Z = 1.07
IBS	Vs	HC	p < 0.001	Z = 10.1
CC	Vs	HC	p < 0.001	Z = 5.68
AH
UC	Vs	IBS	p = 0.42	Z = 0.79
UC	Vs	CC	p = 0.92	Z = 0.04
UC	Vs	HC	p = 0.21	Z = 1.25
IBS	Vs	CC	p = 0.48	Z = 0.69
IBS	Vs	HC	p = 0.68	Z = 0.41
CC	Vs	HC	p = 0.28	Z = 1.07