We present a simple sample-size formula for weighted log-rank statistics applied to clustered survival data with variable cluster sizes and arbitrary treatment assignments within clusters. This ...

This is a preview. Log in through your library . Abstract In the analysis of binary response data from many types of large studies, the data are likely to have arisen from multiple centers, resulting ...

Growing recognition of the importance of health as a contributing factor to economic development and societal change has prompted the Proceedings of the National Academy of Sciences (PNAS) to add a ...

Big data and cloud infrastructure is creating an innovation boom and massive business opportunity. Anytime a market is going under radical reformation there is an opportunity for any company to “move ...

A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...

If you limit your analysis of the cloud DW space just to the MS-AWS lobe, you'll miss some important breakthroughs in the market. For example, Microsoft distinguishes its Azure SQL Data Warehouse from ...

Sometimes, a startup takes such a new and profound approach to a problem that it is hard to know where to begin to describe how radical of a change that company has made in developing its product. So ...