Trial reportHealth and quality of life outcomes2014
Impact of angina frequency on health utility values of patients with chronic stable angina.
Trial report in Health and quality of life outcomes, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00091429 (A Double-Blind, Randomized, Placebo-Controlled, Parallel-Group Study of Ranolazine SR at a Dose of 1000 mg Twice a Day in Patients With Chronic Angina Who Remain Symptomatic Despite Treatment With Amlodipine 10 mg Once a Day), which is not on this map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Double-Blind, Randomized, Placebo-Controlled, Parallel-Group Study of Ranolazine SR at a Dose of 1000 mg Twice a Day in Patients With Chronic Angina Who Remain Symptomatic Despite Treatment With Amlodipine 10 mg Once a Day
Who cites it
5 citing papers in PubMed.
- Health-related qualify of life, angina type and coronary artery disease in patients with stable chest pain.Health and quality of life outcomes · 2020Trial
- Design and rationale of the WARRIOR ancillary study for coronary CT angiographic analysis.American heart journal · 2026Article
- QUIET WARRIOR - Rationale and design: An ancillary study to the Women's IschemiA TRial to Reduce Events in Nonobstructive CAD (WARRIOR).American heart journal plus : cardiology research and practice · 2025Article
- Enhanced External Counterpulsation for the Treatment of Angina With Nonobstructive Coronary Artery Disease.The American journal of cardiology · 2024Article
- Translation and psychometric testing of the Farsi version of the Seattle angina questionnaire.Health and quality of life outcomes · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundChronic angina is a profoundly symptomatic disease. We evaluated the relationship between angina frequency and health utility.
methodsWe used data from stable angina patients reporting ≥3 attacks/week enrolled in the Efficacy of Ranolazine in Chronic Angina (ERICA) trial. Angina frequency was classified using the Seattle Angina Questionnaire angina frequency (SAQAF) domain into no (100); monthly (61-99); weekly (31-60); and daily (0-30) angina. EuroQol (EQ)-5D health utility scores were derived from SAQ data using two mapping equations. Median EQ-5D utility scores for each SAQAF classification after the 6-week trial period were calculated (reported as: Equation 1/Equation 2). Changes in EQ-5D utility scores from baseline to end-of-trial for patients achieving and not achieving a ≥20-point improvement in SAQAF score and improving and not improving ≥1 SAQAF classification were compared.
resultsMedian EQ-5D utility scores (n = 548) were 0.68/0.60. Compared to patients reporting no angina symptoms (n = 28; 0.89/0.87) patients reporting monthly (n = 188; 0.80/0.76), weekly (n = 283; 0.72/0.65) and daily (n = 49; 0.65/0.54) symptoms had poorer health utility (p < 0.001 for both equations). Patients improving ≥1SAQAF classification (n = 254/541, 47%) experienced a median 0.05/0.07 greater improvement in EQ-5D health utility compared to those not improving ≥1 classification (p < 0.001 for both equations). Patients improving ≥20-points on the SAQAF (n = 355/541, 66%) experienced a median 0.06/0.07 greater improvement in health utility compared to those not achieving a ≥20-point improvement (p < 0.001 for both).
conclusionsChronic angina patient health utility decreases as angina frequency increases. Patients reporting clinically important improvement in angina frequency experience a tangible improvement in health utility. CLINICAL
trial registrationNCT00091429.
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