TABLE 2.

Association of Survival with Percentage of Viable Tumor Cells in Patients with NSCLC with or without Neoadjuvant Chemotherapy

Percentage of Viable Tumor Cells	Neoadjuvant Treatment (N = 192)			Surgery Alone (N = 166)
	No. of Patients (%)	HR (95% CI)	p	No. of Patients (%)	HR (95% CI)	p
0–10%	36 (19)	1.00	0.003	0 (0)		0.51
11–30%	19 (10)	2.51 (0.91–6.96)		6 (4)	1.00
31–50%	35 (18)	3.39 (1.40–8.22)		27 (16)	1.02 (0.31–3.33)
51–70%	56 (29)	4.57 (1.98–10.52)		64 (38)	0.62 (0.19–1.96)
71–100%	46 (24)	4.78 (2.06–11.11)		69 (42)	0.76 (0.25–2.41)

HR, hazard ratio; CI, confidence interval.