In a controlled experiment, researchers meticulously manipulate one or more variables to determine their effect on another ...

Jonathan Freeman, Donald A. Goldmann and John E. McGowan, Jr. Most information in hospital epidemiology comes from observational studies of hospitalized patients, not from planned experiments. Data ...

Miffed at the snub to Pakistani cricketers in the Indian Premier League auction on Tuesday, country's Foreign Office has accused that the incident was influenced by "variables extraneous to sports".

Abstract The purpose of this study was twofold: (1) to investigate the characteristics of the participants who competed on a competitive team at the collegiate level and (2) to identify any ...

Miffed at the snub to Pakistani cricketers in the IPL auction, country's Foreign Office has accused that the incident was influenced by variables extraneous to sports. ISLAMABAD: Miffed at the snub to ...