. 2018 Jan-Feb;44(1):55–64. doi: 10.1590/S1806-37562017000000135

Table 1. Lung cancer distribution by histology and staging.

Author	N	Type of facility	NSCLC, %	SCC/Ad ratio	III-IV, %
Ismael et al.⁽ ¹⁸ ⁾	1,887	Public	89	0.93	71
Younes et al.⁽ ¹⁹ ⁾	737	Public	100^a	1.20	74
Westphal et al.⁽ ²⁰ ⁾	352	Public	91	2.54	66
Barros et al.⁽ ²¹ ⁾	263	Public	87	1.96	94
Novaes et al.⁽ ²² ⁾	240	Public	80	1.25	72
Araujo et al.⁽ ²³ ⁾	566	Private	100^a	0.33	80
Caires-Lima et al.⁽ ²⁶ ⁾	232	Public	92	0.48	93
Mascarenhas et al.⁽ ²⁴ ⁾	338	Private	83	0.38	78
Freitas et al.⁽ ²⁵ ⁾	93	Private	100^a	0.33	88

NSCLC: non-small cell lung cancer cases; SCC: squamous cell carcinoma cases; Ad: adenocarcinoma cases; and III-IV: patients in stages III or IV. ^aStudies including only NSCLC cases.