# Effect of Active Telephone Calls in the Compliance of Hypertensive Patients With Treatment

> **NCT00813722** · PHASE4 · UNKNOWN · sponsor: **University of Sao Paulo** · enrollment: 400 (actual)

## Conditions studied

- Blood Pressure

## Interventions

- **BEHAVIORAL:** phone call
- **DRUG:** amlodipine (calcium chanel blocker) and losartan (at1 antagonist)
- **DRUG:** atenolol (beta blocker) and hydrochlorothiazide (diuretic)

## Key facts

- **NCT ID:** NCT00813722
- **Lead sponsor:** University of Sao Paulo
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 1999-03
- **Primary completion:** 2009-01
- **Final completion:** 2009-06
- **Target enrollment:** 400 (ACTUAL)
- **Last updated:** 2008-12-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00813722

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00813722, "Effect of Active Telephone Calls in the Compliance of Hypertensive Patients With Treatment". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT00813722. Licensed CC0.

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