Table 2.

Multinomial Logistic Regression Reporting on the Relative Risk Ratio of SDM and BP Group Membership^*

	High SDM			Lower SDM
	Reduction in SBP ≥10	Reduction in SBP <10		Reduction in SBP ≥10		Reduction in SBP <10
		RRR (95% CI)	P value	RRR (95% CI)	P value	RRR (95% CI)	P value
Sociodemographic characteristics
Age	Ref	1.03 (1.01,1.04)	0.002‡	1.01 (0.99–1.02)	0.371	1.01 (0.99–1.02)	0.396
Male sex	Ref	1.08 (0.75–1.56)	0.686	1.08 (0.79–1.46)	0.628	1.25 (0.90–1.75)	0.186
Race and ethnicity
NL White participants (437)	Ref
NL Black participants (690)	Ref	1.64 (1.05–2.54)	0.029‡	1.09 (0.77–1.55)	0.610	0.81 (0.56–1.19)	0.286
Latino participants (85)	Ref	1.56 (0.73–3.34)	0.251	0.54 (0.27–1.09)	0.085	0.63 (0.30–1.30)	0.211
Education
<High school	Ref
High school	Ref	0.73 (0.44–1.19)	0.200	1.44 (0.91–2.28)	0.115	0.81 (0.50–1.33)	0.410
>High school	Ref	0.83 (0.48–1.43)	0.502	1.87 (1.12–3.11)	0.016‡	1.27 (0.75–2.17)	0.378
Other characteristics
Knowledge that high BP means hypertension	Ref	1.57 (1.01–2.44)	0.045‡	1.25 (0.87–1.80)	0.232	2.20 (1.41–3.43)	<0.001‡
High BP is a serious health concern	Ref	0.89 (0.60–1.32)	0.559	0.77 (0.55–1.06)	0.109	0.75 (0.53–1.07)	0.113
Taking BP medication is very important	Ref	1.36 (0.62–2.96)	0.440	0.60 (0.35–1.01)	0.056	0.58 (0.32–1.03)	0.062
Patient activation†	Ref	1.00 (0.99–1.01)	0.517	0.98 (0.97–0.99)	<0.001‡	0.99 (0.98–1.00)	0.039‡

Log likelihood = −1572.7. BP indicates blood pressure; High SDM, CollaboRATE sum score 27; HTN, hypertension; Lower SDM, CollaboRATE sum score ≤26; NL, non‐Latino; RRR, relative risk‐ratio; SBP, systolic blood pressure; and SDM, shared decision‐making.

^*Adjusted for intervention group assignment.

^† Patient Activation Measure (PAM‐13).

^‡ Statistically significant, P value <0.05.