. Author manuscript; available in PMC: 2023 Jul 27.

Published in final edited form as: Ann Surg. 2023 Apr 6;277(5):e1106–e1115. doi: 10.1097/SLA.0000000000005370

Table 3.

Probability of completion lymph node dissection and adjuvant systemic therapy based on patient, disease, and treating center factors^a

	Completion Lymph Node Dissection		Adjuvant Systemic Therapy
	Odds Ratio (95% Confidence Interval)	P-Value	Odds Ratio (95% Confidence Interval)	P-Value
Primary site
Head and neck	2.19 (1.26, 3.80)	0.006	1.04 (0.66, 1.61)	0.877
Trunk	1.10 (0.73, 1.66)	0.657	1.06 (0.77, 1.47)	0.705
Extremity	Reference		Reference
Tumor ulceration	0.88 (0.54, 1.43)	0.594	1.20 (0.82, 1.75)	0.349
Microsatellites	0.84 (0.45, 1.56)	0.582	0.92 (0.54, 1.55)	0.746
AJCC 8^th edition stage
IIIA	0.70 (0.39, 1.26)	0.234	0.37 (0.23, 0.59)	<0.001
IIIB	0.57 (0.32, 1.02)	0.060	0.71 (0.47, 1.08)	0.108
IIIC/D	Reference		Reference
Nodal tumor ≥1 millimeter	3.62 (2.33, 5.63)	<0.001	1.65 (1.20, 2.27)	0.002
Extranodal tumor extension	1.70 (0.89, 3.24)	0.106	1.52 (0.84, 2.76)	0.165

Models contained random intercept to account for clustering of patients within facility