RETRACTED ARTICLE: Ultrasound versus temporal artery biopsy in patients with Giant cell arteritis: a prospective cohort study

Table 3 Diagnostic parameters of adopted modalities

Parameters of giant cell arteritis	Diagnostic modalities examinations
	MRI	PC		TAB		PC + TAB		Us		PC + Us
	MRI	Value	^*p	Value	^*p	Value	^*p	Value	^*p	Value	^*p
Patients enrolled	980	980	^*p	980	^*p	980	^*p	980	^*p	980	^*p
True positive	840(86)	350(36)	< 0.0001	400(41)	< 0.0001	643(65)	< 0.0001	385(39)	< 0.0001	650(66)	< 0.0001
True negative	140(14)	40(4)	< 0.0001	50(5)	< 0.0001	50(5)	< 0.0001	45(5)	< 0.0001	100(10)	0.007
False positive	0(0)	290(30)	< 0.0001	270(28)	< 0.0001	127(13)	< 0.0001	46(5)	< 0.0001	45(5)	< 0.0001
False negative	0(0)	100(10)	< 0.0001	85(9)	< 0.0001	35(4)	< 0.0001	15(2)	0.0003	15(2)	< 0.0001
Inconclusive	0(0)	200(20)	< 0.0001	175(18)	< 0.0001	125(13)	< 0.0001	489(50)	< 0.0001	170(17)	< 0.0001
Sensitivity	1	0.8	< 0.0001	0.82	< 0.0001	0.87	< 0.0001	0.5	< 0.0001	0.83	< 0.0001
Accuracy	1	0.4	< 0.0001	0.46	< 0.0001	0.71	< 0.0001	0.44	< 0.0001	0.77	< 0.0001

MRI Magnetic resonance imaging
PC Physical and clinical features examinations
TAB Temporal artery biopsy examinations results
Us Ultrasound examinations results
Continuous variables are represented as mean and constant variables are represented as number (percentage)
Constant data were analyzed by the Chi-square test of Independence
The results were considered significant if p < 0.01
^*p-value comparison with respect to MRI examinations

ISSN: 1471-2342