Immunohistochemical analysis of undifferentiated and poorly-differentiated head and neck malignancies at a tertiary hospital in Nigeria

Table 3 Sensitivity and specificity of histology

	Carcinomas	Sarcomas	Lymphomas	Neuroendocrine carcinomas
Sensitivity	0.971	0.545	0.285	0.142
Specificity	0.477	0.947	0.984	0.986
PPV	0.596	0.800	0.800	0.500
NPV	0.954	0.843	0.864	0.922
Accuracy	0.696	0.835	0.860	0.911
Kappa statistics value	0.42	0.54	0.42	0.18