. 2023 Jul 12;158(9):954–964. doi: 10.1001/jamasurg.2023.2414

Table 2. Preoperative and Postoperative Model Statistics.

Variable	OR (95% CI)	P value	Measure, %
Preoperative model (model 1)
Baseline age (per 1-y increase)	1.01 (1.00-1.02)	.13	MEM, 0.1
Baseline weight (per 1-kg increase)	1.01 (1.00-1.02)	.009	MEM, 0.1^a
Height (per 1-cm increase)	0.98 (0.96-1.00)	.10	MEM, −0.1
Race^b
Asian	0.99 (0.48-2.06)	.99	APM, 6.9^a
Black	1.53 (1.01-2.32)	.047	APM, 10.2^a
White	1 [Reference]	NA	APM, 6.9^a
Other race	1.11 (0.49-2.51)	.80	APM, 7.6^a
Lymphadenectomy
SLNB	1 [Reference]	NA	APM, 3.1^a
ALND	7.89 (5.14-12.10)	<.001	APM, 20.0^a
Any radiation therapy
No	1 [Reference]	NA	APM, 6.5^a
Yes	1.17 (0.79-1.73)	.43	APM, 7.5^a
Any chemotherapy
No	1 [Reference]	NA	APM, 5.3^a
Yes	1.66 (1.03-2.68)	.04	APM, 8.5^a
Postoperative model (model 2)
Current age (per 1-y increase)	1.02 (1.01-1.04)	.002	MEM, 0.1^a
Current weight (per 1-kg increase)	1.00 (0.99-1.01)	.50	MEM, 0
Race^b
Asian	1.22 (0.54-2.72)	.63	APM, 6.9^a
Black	1.26 (0.79-2.00)	.34	APM, 7.1^a
White	1 [Reference]	NA	APM, 5.7^a
Other race	0.94 (0.39-2.29)	.89	APM, 5.4^a
Lymphadenectomy
SLNB	1 [Reference]	NA	APM, 3.4^a
ALND	3.62 (2.25-5.83)	<.001	APM, 11.4^a
Any chemotherapy
No	1 [Reference]	NA	APM, 4.2^a
Yes	1.68 (1.01-2.81)	.047	APM, 6.9^a
Any swelling
No	1 [Reference]	NA	APM, 4.0^a
Yes	10.85 (7.48-15.74)	<.001	APM, 31.0^a
Unknown	1.14 (0.47-2.76)	.77	APM, 4.5^a

Abbreviations: ALND, axillary lymph node dissection; APM, adjusted predictive margin; MEM, marginal effect at the mean; SLNB, sentinel lymph node biopsy.

^{^a}

P < .05.

^{^b}

Race data were self-reported. The other race category included American Indian and Alaska Native, other race, patient refused to disclose, or unknown.