Table 1

Performance of self-reported best practice procedure components

Best practiceCMS (%) (n=22)IAC (%) (n=6)Overall (%) (n=28)Fisher’s exact comparing CMS versus IAC p value95% CI of the frequencies
Lower (%)Upper (%)
mRS pre-stent36100500.012080
NIHSS pre-stent77100820.55−1843
DSA including head and neck pre-stent7766750.62−2149
Electronic calliper determination of per cent stenosis32100460.0052484
Measure per cent stenosis using NASCET criteria68100750.29−1053
Embolic protection device use91100931.00−3128
DSA including head and neck post-stent7383751.00−3236
Treated with antiplatelet dual regimen82100860.55−2239
ACT >250 s5510064 0.05265
NIHSS 24 hours post-stent77100820.55−1843
~30-day post-stent neurological assessment82100860.55−2239
~30-day post-stent follow-up mRS64100710.14−657
~30-day post-stent follow-up NIHSS64100710.14−657
~30-day post-stent outcomes stroke and death73100790.29−1448
~30-day non-invasive study59100680.14−259
Benchmark for stroke and death50100610.03769
Overall 66 97 73 < 0.001 24 36
  • ACT, activated clotting time; CMS, Centers for Medicare and Medicaid Service; DSA, digital subtracted angiography; IAC, Intersocietal Accreditation Commission; mRS, Modified Rankin Scale; NASCET, North American Symptomatic Carotid Endarterectomy Trial; NIHSS, National Institute of Health Stroke Scale.