Table 2. Narrative review of the association between clinicopathological parameters and CD133 positive expression with respect to non-small-cell-lung cancer patients.

Items	Significant correlation (P<0.05)	Non-significant correlation (P≥0.05)
Age	–	[1], [15], [24], [17], [26], [27], [28], [29], [30], [31], [32], [33]
Gender	–	[1], [8], [15], [24], [17], [26], [27], [28], [29], [30], [31], [32], [33], [36], [37]
Smoking	[36]	[1], [8], [24], [30], [29], [28], [32], [33]
Histology	[8], [29], [32], [33], [36], [38]	[1], [15], [24], [17], [25], [26], [27], [28], [30], [31], [35]
Differentiation	[29], [31], [34], [38]	[1], [26], [37], [24], [25], [35]
Lymph node metastasis	[25], [31], [34], [35]	[8], [17], [26], [32], [36]