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Norman Alvarado

302 Posts

Science and Technology

AI in breast cancer screening detects more cancers and lowers workload in national program

Norman Alvarado

Out of all the medical artificial intelligence promises made over time, a single instance has crossed the entire finish line: a randomized trial, a prespecified primary endpoint, and a published…

Culture and Entertainment

Arts activities in groups reduce symptoms better than solitary participation

Norman Alvarado

A GP prescribing a painting class instead of an anxiolytic is a powerful image, and arts-on-prescription programmes have spread across half of Europe on the back of it. The most…

Investments and Business

What investors lose by not diversifying beyond a few stocks

Norman Alvarado

Under mean-variance portfolio theory, the optimal level of diversification today exceeds 300 stocks. The average investor holds three or four. That distance is one of the best documented anomalies in…