Data results on microbial counts
from each baseline data on each hand were converted
to base 10 logarithms, then were averaged to
determine hand’s baseline count. The primary
outcome measure was the total log reduction during
each period, calculated by subtracting the end of week
3 log recovery from the baseline log recovery. The
effect of method of surgical hand scrubs on log
reduction was assessed using a mixed model analysis
of variance. Fixed effects in the model were Sequence,
Method, Period and the random effect was Subject
nested within Sequence. The baseline log count was
included as a covariate.