Table 2. Common themes and relevant quotes illustrating barriers and facilitators for motivation.

TDF Domains	Common Themes noted in Interviews	Exemplary Quotes grouped as Barriers and Facilitators
Motivation and Goals	Having incentives for SMBP can motivate PCPs.	• …all the work that’s done in-between office visits currently is not reimbursed, so having some reimbursement for that kind of work would be helpful.—I think one of the things that motivates people and also doctors the most is incentives.
	However, some believed incentives alone would not be enough to overcome the barriers.	• So, I don’t think physician incentives really play a role. Patient incentives—now, that’s a different story. • I think the same barriers will probably still exist though.
Beliefs about Consequences	SMBP make more BP readings available to physicians, improving their ability to manage hypertension.	• …trying to get their blood pressure down, that’s when I’ll say hey, why don’t you measure your blood pressure readings over five different readings over a period of time with more intensive home blood pressure monitoring. • I feel that sometimes [SMBP] keeps me from adjusting the medicines unnecessarily when their readings in the clinic are high. • …I ask them to monitor at home just because we get more data that way.
	SMBP is more accurate than in-clinic BP and can help with managing white coat hypertension.	• …they’re more relaxed at home, and so whenever they see me maybe their blood pressure is a little bit high. . . . • Or some patients have white coat hypertension, which it does help. • I think for white coat hypertension, it’s a very helpful tool to have those home readings. • …but more optimistic about the information I can get from those readings to be able to make reasonable change for that patient • If it is elevated in the clinic then making a decision about whether or not to start medication and diagnosing hypertension [is hard]…
Emotion	SMBP is helpful but is stressful and burdensome.	• …I’m always hopeful that [SMBP] will be helpful. but I wouldn’t say it does not make me feel stressed at all. • I probably feel more hopeful than anything that they’ll take action and take a little responsibility for their blood pressure • …because it is kind of a burden.
Social or Professional Role and Identity	Clinic staff other than physicians can help, but physician involvement is necessary with some aspects of hypertension management.	• I think a team-based approach is definitely the way the future is going…the pharmacist for sure, nurse practitioner just fine. RN would be–a trained RN would be fine. And probably a trained LPN would probably be reasonable. • It could be done by a nurse practitioner or pharmacist. • Although they’re pharmacists, they would know about interactions probably more than physicians do. But as far as the medical interactions, meaning how is this going to affect their memory loss, how is this going to affect their urination, how is this going to affect their quality of life, how is this going to affect their COPD, how will these medications affect their other illnesses, so I think that’s the physician’s perspective. • I think there are some things that are specific conditions that you learn in medical school and residency trainings… • I think we cannot minimize the role of the physician. I mean after having gone through med school. . . • …hypertension does not always have to be an isolated condition. It can be kind of a combination of so many things. Pharmacists I imagine would be able to know maybe medication interaction and see that a medicine is doing that but…I don’t think you can replace the physician’s knowledge. • I think at this point there’s enough guidelines and everything that a nurse or a nurse practitioner or a pharmacist would be able to manage …as long as there were proper protocols within those guidelines that if it got out of whack, it then resorted back to me.
Beliefs about Capabilities	SMBP is underutilized.	• I think we don’t get as many people as we would like. So yes, I think it’s underutilized. I don’t think it’s because people are not prescribing it; I think it’s because of the barriers for people to do it. • I think we still don’t do enough of it.

PCP; primary care physician, SMBP; self-measured blood pressure monitoring, COPD; chronic obstructive pulmonary disease.