This is a preview. Log in through your library . Abstract A simple method for comparing independent groups of clustered binary data with group-specific covariates is proposed. It is based on the ...

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at ...

An inherent principle of publication is that others should be able to replicate and build upon the authors' published claims. A condition of publication in a Nature Portfolio journal is that authors ...

Between February and April, 10 percent of Americans ages 25 to 54 lost their jobs. The employed percentage of the population dropped to its lowest level since 1975, according to Labor Department data.