Table 4.

Temporal changes in all-cause mortality and neurosurgical treatments after reperfusion therapy.

	Death	Neurosurgical treatments	Composite outcome
Frequency, %
2010	8.8	3.2	11.6
2011	8.0	2.9	10.4
2012	8.3	2.9	10.7
2013	7.9	3.0	10.4
2014	8.0	2.7	10.2
2015	6.9	2.5	9.0
Pre-extension period
B1 (SE)	−0.02 (0.02)	−0.01 (0.01)	−0.04 (0.02)
P value	.40	.39	.14
Immediately after extension
B2 (SE)	0.34 (0.54)	0.20 (0.31)	0.55 (0.53)
P value	0.53	0.53	0.30
Post-extension period
B3 (SE)	−0.01 (0.03)	−0.00 (0.02)	−0.01 (0.03)
P value	.64	.96	.71