Table 2.

Spearman’s rank correlation coefficients (ρ) for waiting time for patients treated with neoadjuvant therapy followed by esophagectomy or primary surgery for esophageal cancer

	Neoadjuvant therapy	Primary surgery
Age at diagnosis	0.11	0.25
Gender	0.02	0.03
ASA score	0.16	0.14
Tumor location	0.05	−0.03
Type of neoadjuvant therapy	−0.08	n.a.
Surgical approach	0.02	0.22
Histological type	0.01	0.01
pT stage	0.06	−0.22
pN stage	0.07	−0.11
Radicality	0.01	0.09
Referral	0.16	0.10
Year of diagnosis	−0.22	0.17

ASA American Society of Anesthesiologists, n.a. not applicable

Positive or negative coefficients indicate positive or negative correlations with 1 or −1 being the strongest positive or negative relationship