Performance was compared between a baseline 9-month period and an intervention 9-month period as well as against a different 'sister' unit.

"And how long is this baseline period going to be?"

The authors compared pediatric hospitalization rates during the 17 days of the Olympics with a baseline period four weeks before and four weeks after.

The Wilcoxon signed rank test was used to compare the differences between motility index during the baseline period and postprandial period.

Their blood-fat levels were recorded during a "baseline" period, while they maintained their usual level of physical activity.

After a 90 minute baseline period, we instilled a 100 mol HCl pulse (1 ml volume) through the duodenal line and the perfusion was stopped.

As above, one may use the conditional expected value of the accident rate Θ given the observed number of accidents during the baseline period.

The baseline period should therefore, in my opinion, cover as far-reaching a period as possible, in other words the years 2007-2009.

It should be noted that in a Gainsharing plan, the company's current performance is compared to its historic performance (baseline period).

The savings above the baseline period determine the gain or loss.