The phrase "a proven one" is correct and usable in written English.
It can be used to refer to something that has been tested and shown to be effective or reliable.
Example: "This method is a proven one, having yielded successful results in numerous studies."
Alternatives: "a tested one" or "a reliable one".
Colombia midfielder Juan Cuadrado sometimes has the look of a true star, and his teammate James Rodríguez is a proven one — as long as he can shake off two years of rust acquired on the Real Madrid bench.
Especially, given the high sensitivity of this biomarker compared with a proven one, it could become a relevant and accurate tool to estimate the biological hazards of micropollutants in the water.
If we don't elect him we're going to have Hillary Rodham Clinton, who is a criminal – a proven one, to be exact – in the presidential office, and if that happens this country will not be here in the first four, or possibly eight years".
Our study population is comprised of the 1675 patients with complete preoperative QoL information and a proven one year survival.
After exclusion of 49 patients who died during the first postoperative year - 10 patients died postoperative in hospital, 39 during the first postoperative year - we have a proven one year survival of 1675/1714 patients (97.7%).
In addition to a proven one-day record and a comfort for wearing the crown, there is a further reason why Morgan was seen as the ideal option to lead England when Cook was removed.
South Africa has been a true pioneer in expanding access to VMMC -- a proven one-time intervention that reduces men's risk of becoming infected with HIV by approximately 60percentt.
We have thus included only patients with complete preoperative QoL information and a proven one-year survival.
23, 24 Since there is a proven one-to-one mapping between color space and chromophore parameters, individual chromophore parameter values can be retrieved from the model, giving the color vector obtained from each point as a color skin image.
This study includes 1675 patients, all of whom were operated between July 1, 2009 and July 1,2012 and have a proven one-year survival, as well as a complete preoperative EuroQoL registration (EQ-5D and EQ-VAS).
