Table 2.

Reduction in total case time by site

	Canada (one OR)		France (two ORs)		US (two ORs)
	Diff (%)	P-value	Diff (%)	P-value	Diff (%)	P-value
Setup time (median)	−14.4	<0.001	−7.7	NS	−17.0	<0.001
Surgery time (median)	−7.8	<0.01	−8.7	NS	−3.7	<0.10
Teardown time (median)	−10.3	NS	−4.1	NS	−12.5	<0.01
Total case time (mean)	−12.0	<0.001	−6.2	<0.05	−9.4	<0.001
Total case time (SD)	+5.0	NS	−27.2	NS	−11.8	NS

Notes: A two-sample t-test was used for independent samples. P-values above 0.10 were deemed not significant.

Abbreviations: ORs, operating rooms; Diff, difference; NS, not significant; SD, standard deviation.