Sentence examples for Before periods from inspiring English sources

To be applied, formula [1] requires one of two conditions to be present: (a) equal duration of "before" periods and equal duration of "after" periods for the treatment site and the comparison group; or (b) equal duration of "before" and "after" periods for the treatment site and the same for the comparison group.

Hence, 2005 2007 or 2006 2008 were considered as before periods, and 2009 2011 (or a shorter period from April 2009 till the end of 2011) as an after period.

Mouneimne pointed to Solomons' success as assistant with the South African national team and the Stormers before periods in charge at Ulster, Barbarians, Northampton Saints, Kings and Eastern Province Kings.

As Slate's Jordan Weissmann points out, workers tend to reap the benefits of growth not long before periods of rapid expansion flame out.

A large host population is available for infection before periods of hypertransmission.

These cooler season crops can sometimes be harvested before periods of extremely low humidity.

Study length Dates of before period; Dates of after period.

The traffic volumes were approximately 20% higher in the before period compared with the after period, reflecting a longer duration of the before-period.

The crash outcome in the after period was compared with the outcome in the before period.

the number of accidents in comparison group sites in the "before" period.

As expected, we find no significant effect in the before period.