Table 4.

The diagnostic value of criteria in discriminating histological types.

	Sensitivity	Specificity	PPV	NPV
NSCLC	87.12% (913/1048)	64.61% (115/178)	93.55% (913/976)	46% (115/250)
SCLC	62.63% (57/91)	99.5% (1129/1135)	90.47% (57/63)	97.08% (1129/1163)
Adenocarcinoma	68.1% (363/533)	70.73% (145/205)	85.82% (363/423)	46.03% (145/315)
Squamous carcinoma	81.63% (120/147)	65.93% (60/91)	79.47% (120/151)	68.97% (60/87)

NSCLC versus Other 1; SCLC versus Other 2; adenocarcinoma versus Other 3; squamous carcinoma versus Other 4. Other 1 = SCLC and benign disease; Other 2 = NSCLC and benign disease; Other 3 = squamous carcinoma, large cell carcinoma, and benign disease; Other 4 = adenocarcinoma, large cell carcinoma, and benign disease.