The phrase "a base of confidence" is correct and usable in written English.
It can be used to describe a foundational level of trust or assurance in a particular situation or context.
Example: "Her extensive training provided her with a solid base of confidence to tackle the challenges ahead."
Alternatives: "a foundation of confidence" or "a source of confidence."
For a player with both athleticism and solid long-range shooting, a base level of confidence and consistency likely matters more for his future play than any individually impressive game.
But over the time and especially with [NURSE NAME] I began to believe that they have such a base of knowledge that I have confidence in what they are saying.
Evaluation of the critical noise intensity corresponding to the beginning of these transitions may be obtained on the base of confidence domains technique.
Much of modern politics is based on a series of confidence tricks.
That was a cautious, fearful decision based on a loss of confidence in the batting lineup.
"We feel with a lot of confidence, based on the weather, that we are going to be able to up that number by the end of the day.
Right now it's a crisis of confidence based on weak economies but the banking sector is not broken," said Reena Aggarwal, professor of finance at Georgetown University.
The ECB said at the time that the decision was based on a lack of confidence in Greece's completion of the fiscal adjustment program.
Spectra were analyzed using SARAMIS™ (Spectral Archive And Microbial Identification System, AnagnosTec GmbH, Potzdam, Germany), a software in which the identification at the species level is based on a percentage of confidence referred to reference spectra (SuperSpectra™) that contain family, genus and species specific m/z biomarkers, as described in the SARAMIS™ user manual.
The categories refer to a level of confidence based on the distribution of the smRNAs predicted to bind the target site (see Results and Discussion).
An important outcome of our multilayer approach is the possibility of analyzing each protein module based on a grid of confidence levels.
