Effects of a web-based patient activation intervention to overcome clinical inertia on blood pressure control: cluster randomized controlled trial

Jeffrey Thiboutot, Christopher N Sciamanna, Bonita Falkner, Donna K Kephart, Heather L Stuckey, Alan M Adelman, William J Curry, Erik B Lehman, Jeffrey Thiboutot, Christopher N Sciamanna, Bonita Falkner, Donna K Kephart, Heather L Stuckey, Alan M Adelman, William J Curry, Erik B Lehman

Abstract

Background: Only approximately half of patients with hypertension have their blood pressure controlled, due in large part to the tendency of primary care providers (PCPs) not to intensify treatment when blood pressure values are elevated.

Objective: This study tested the effect of an intervention designed to help patients ask questions at the point of care to encourage PCPs to appropriately intensify blood pressure treatment.

Methods: PCPs and their patients with hypertension (N=500) were recruited by letter and randomized into 2 study groups: (1) intervention condition in which patients used a fully automated website each month to receive tailored messages suggesting questions to ask their PCP to improve blood pressure control, and (2) control condition in which a similar tool suggested questions to ask about preventive services (eg, cancer screening). The Web-based tool was designed to be used during each of the 12 study months and before scheduled visits with PCPs. The primary outcome was the percentage of patients in both conditions with controlled blood pressure.

Results: Of 500 enrolled patients (intervention condition: n=282; control condition: n=218), 418 (83.6%) completed the 12-month follow-up visit. At baseline, 289 (61.5%) of participants had controlled blood pressure. Most (411/500, 82.2%) participants used the intervention during at least 6 of 12 months and 222 (62.5%) reported asking questions directly from the Web-based tool. There were no group differences in asking about medication intensification and there were no differences in blood pressure control after 12 months between the intervention condition (201/282, 71.3%) and control condition (143/218, 65.6%; P=.27) groups. More intervention condition participants discussed having a creatinine test (92, 52.6% vs 49, 35.5%; P=.02) and urine protein test (81, 44.8% vs 21, 14.6%; P<.001), but no group differences were observed in the rate of testing. The control condition participants reported more frequent discussions about tetanus and pneumonia vaccines and reported more tetanus (30, 13.8% vs 15, 5.3%; P=.02) and pneumonia (25, 11.5% vs 16, 5.7%; P=.02) vaccinations after 12 months.

Conclusions: The use of an interactive website designed to overcome clinical inertia for hypertension care did not lead to improvements in blood pressure control. Participant adherence to the intervention was high. The control intervention led to positive changes in the use of preventive services (eg, tetanus immunization) and the intervention condition led to more discussions of hypertension-relevant tests (eg, serum creatinine and urine protein). By providing patients with individually tailored questions to ask during PCP visits, this study demonstrated that participants were likely to discuss the questions with PCPs. These discussions did not, however, lead to improvements in blood pressure control.

Trial registration: ClinicalTrials.gov NCT00377208; https://ichgcp.net/clinical-trials-registry/NCT00377208 (Archived by WebCite at http://www.webcitation.org/6IqWiPLon).

Keywords: Internet; Web-based; hypertension; tailored-feedback.

Conflict of interest statement

Conflicts of Interest: None declared.

Figures

Figure 1
Figure 1
CONSORT diagram of participant flow.
Figure 2
Figure 2
Screenshot of intervention condition monthly survey.
Figure 3
Figure 3
Screenshot of intervention condition feedback from monthly survey.
Figure 4
Figure 4
Percentage of participants using the intervention during each of the 12 study months.
Figure 5
Figure 5
Mean (± standard error) number of log-ins per month in both conditions in each of the 12 study months.

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