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Effectiveness of SMS text reminders to improve blood pressure among patients with hypertension at a general medicine outpatient clinic in a tertiary government center in Manila, Philippines: A randomized controlled trial.

Author

Lia Aileen M. Palileo

Related Institution

Sagip Buhay Medical Foundation, Inc

Publication Information

Publication Type
Research Project
Date
October 1, 2010-August 15, 2012

Abstract

OBJECTIVES: 1) To determine if mobile phone SMS text reminders will improve blood pressure and medication adherence among hypertensive patients maintained on blood pressure-lowering medications. 2) To determine acceptability of mobile phone or text reminders.


METHODS: Adult patients wit hypertension,maintained on anti-hypertensive medications and consulting at the general medicine Outpatients Clinic of the Philippine General Hospital were randomized (1:1) to intervention or control. For 12 weeks, intervention patients were sent 2 SMS text messages per week that provided information on hypertension and reminded them to take their medications on top of the usual care they receive . Participants in the control arm received usual care. Blood pressure was measured using a calibrated digital sphygmomanometer. Medication adherence was assessed using the adherence Self Report Questionnaire(ASRQ). Intention to treat analysis was done. Acceptability of the text messages was evaluated using standardized questionnaire.


RESULTS: 700 patients were randomized however, only 292 patients completed follow-up (intervention 44.2%; control 42.9%). Mean reduction is systolic blood pressure was greater in the intervention group compared to control, but this was not statistically significant (mean difference -4.2,CI-9.4,1.0;p=0.057). A greater proportion of patients in the intervention arm achieved controlled blood pressure at the end of 12 weeks compared to control (controlled SBP RR 1.3, CI 1.1, 1.6; p=0.002; controlled SBP and DBP RR 1.3, CI 1.04). Median ASRQ score in the intervention arm(median 1,rank sum 17772.50) compared to control (RR 1.3, CI 1.01, 1.6; =p0.04). SMS Text messages were deemed acceptable by study participants.


CONCLUSION: SMS text reminders seem to improve blood pressure and medication adherence among hypertensive patients, however further studies with better follow-up should be done to confirm these results.

Physical Location

LocationLocation CodeAvailable FormatAvailability
Philippine Council for Health Research and Development PRP 402/ C1, C2, C3/ R858.E34 P35 2012 Fulltext Print Format
Philippine Council for Health Research and Development PRP 402/ C1, C2, C3/ R858.E34 P35 2012 Fulltext pdf (Request Document)

 
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