Percutaneous coronary intervention is a non-surgical procedure used to treat narrowing (stenosis) of the coronary arteries of the heart found in coronary artery disease. Systolic Blood Pressure The top number refers to the amount of pressure in your arteries during contraction of your heart muscle. Transferrin saturations The value of serum iron divided by the total iron-binding capacity. Transient ischaemic attack A temporary disruption in the blood supply to part of the brain. 13.2 General terms Term Definition Abstract Summary of a study, which may be published alone or as an introduction to a full scientific paper. Algorithm (in guidelines) A flow chart of the clinical decision pathway described in the guideline, where decision points are represented with boxes, linked with arrows. Allocation concealment The process used to prevent advance knowledge of group assignment in an RCT. The allocation process should be impervious to any influence by the individual making the allocation, by being administered by someone who is not responsible for recruiting participants. Applicability How well the results of a study or NICE evidence review can answer a clinical question or be applied to the population being considered. Arm (of a clinical study) Subsection of individuals within a study who receive one particular intervention, for example placebo arm. Association Statistical relationship between 2 or more events, characteristics or other variables. The relationship may or may not be causal. Chronic Heart Failure Glossary NICE 2018. All rights reserved. Subject to Notice of rights. ISBN: 978-1-4731-3093-7 Term Definition Base case analysis In an economic evaluation, this is the main analysis based on the most plausible estimate of each input. In contrast, see Sensitivity analysis. Baseline The initial set of measurements at the beginning of a study (after run-in period where applicable), with which subsequent results are compared. 