Table 2 –

Summary of theoretical domains and specific constructs for avoiding sentinel lymph node biopsy (SLNB) in women over age 70 with hormone receptor positive tumors.

Domain	Construct	Sample Quote
Avoiding SLNB in Women Over Age 70 with Hormone Receptor Positive Tumors
Knowledge	Scientific Rationale	“I don’t think that there is so much compelling data, specifically regarding the age, to support foregoing a sentinel node biopsy.” “I use overall health status because, as you know, not all 70-year olds are created equal. If they have a reasonable expectation of good quality of life, I think that doing a sentinel lymph node biopsy is a good idea.”
Beliefs about Consequences	Outcome Expectancies	“Our radiation oncologists are pretty aggressive, so if a negative SLNB would minimize their likelihood of recommending radiation, then that’s something that would push me ..because we could probably save [the patient] radiation.” “I see a lot of healthy 70-year-olds who are motivated to live to 95. It’s long enough for the patient to have a recurrence if you didn’t do a sentinel node and therefore didn’t do some sort of therapy.” “I don’t think that a sentinel [lymph node biopsy] adds a lot of morbidity.”
Social Influence	Social Pressures	“If you talk to medical oncologists, they’ll say a 72-year-old with node-positive disease still benefits from the addition of systemic chemotherapy, so I would still [perform a SLNB] in that setting. “Because they (i.e. medical oncology, radiation oncology) would utilize the information, I still assume that the sentinel node biopsy should be performed.”
	Power	I believe a patient should have a choice as long as they’re well educated in what we do know about that choice.”
Beliefs about Capabilities	Professional Confidence	“It would probably add four minutes to the surgery. So, I kind of [think] it is reasonable.”
Goals	Goal Priority	“If somebody really said, I’m gonna lose sleep by not knowing this information…then yeah [I would perform [a SLNB].”