. Author manuscript; available in PMC: 2022 Jan 1.

Published in final edited form as: J Neuroimaging. 2020 Oct 29;31(1):155–164. doi: 10.1111/jon.12796

Table 5.

Sensitivity analyses comparing results of outcome associations with collateral grades determined by CT angiography or MR angiography for the entire cohort (CTA+MRA) versus the cohort excluding those with MRA-determined collaterals (CTA).

	CTA+MRA		CTA
	OR (95% CI)/β	P	OR (95% CI)/β	P
90 Day Good Outcome	1.011 (0.595,1.719)	0.967	1.148 (0.536,2.458)	0.722
Total Infarct Growth	0.158	0.305	0.120	0.498
White Matter Infarct Growth	0.243	0.112	0.194	0.271
Cortex Infarct Growth	0.148	0.337	0.088	0.621
Basal Ganglia Infarct Growth	0.152	0.325	0.224	0.202

There were no meaningful differences in data interpretation of outcome associations with collaterals based on imaging modality used. Good outcome was defined as modified Rankin Scale 0-2. Infarct growth was natural logarithm-transformed for linear regressions. Abbreviations: OR: odds ratio, CI: confidence interval, β: parameter estimate