Table 4.

Univariable logistic regression analysis between diagnostic tests performed and primary site identification.

Diagnostic Test	Odd Ratio (95% CI)	P-value
History and Physical Examination	1.4 (0.3–0.9)	0.690
Alpha fetoprotein (AFP)	1.3 (0.7–2.5)	0.338
Human chorionic gonadotropin (hCG)	1.5 (0.7–3.2)	0.275
Chromogranin A	0.4 (0.1–1.5)	0.202
Prostate specific antigen (PSA)	0.9 (0.4–1.8)	0.689
CK7/CK20 immunohistochemistry	1.1 (0.7–1.9)	0.635
Computed tomography (CT) Head	1.2 (0.7–2.0)	0.420
CT Thorax	1.7 (0.5–7.8)	0.433
CT Abdomen/Pelvis	0.7 (0.2–2.3)	0.571
Octreoscan	1.0 (0.2–3.6)	0.978
Mammography	1.3 (0.6–2.6)	0.456
Endoscopy	0.9 (0.5–1.4)	0.584
Positron Emission Tomography (PET) Scan	1.5 (0.8–2.9)	0.189
Next Generation Sequencing (NGS)	1.2 (0.2–7.4)	0.841