Table 2

Linear trend test of NIC for recanalisation and functional outcome

	Median	Cases	No. of events	Univariable analysis		Multivariable analysis
	Median	Cases	No. of events	OR (95% CI)	P value	OR (95% CI)	P value
For successful recanalisation (AOL 2–3)†
Tertiles
Q1, low-level NIC (<0.126)	0.108	36	14 (38.89 %)	1.000 (Reference)		1.000 (Reference)
Q2, moderate-level NIC (0.126–0.163)	0.142	36	25 (69.44%)	3.571 (1.346, 9.475)	0.011^*	2.936 (1.013, 8.511)	0.047^*
Q3, high-level NIC (>0.163)	0.200	36	31 (86.11%)	9.743 (3.060, 31.020)	<0.001^**	12.433 (3.329, 46.427)	<0.001^**
P for trend				<0.001^**		<0.001^**
For good functional outcome (90-day mRS, 0–2)‡
Tertiles
Q1, low-level NIC (<0.126)	0.108	36	9 (25.00%)	1.000 (Reference)		1.000 (Reference)
Q2, moderate-level NIC (0.126–0.163)	0.142	36	19 (52.78%)	3.353 (1.235, 9.102)	0.018^*	5.209 (1.403, 19.339)	0.014^*
Q3, high-level NIC (>0.163)	0.200	36	25 (69.44%)	6.818 (2.421, 19.201)	<0.001^**	16.382 (3.694, 72.655)	<0.001^**
P for trend				<0.001^**		<0.001^**

P values in bold indicate statistical significance.
*p<0.05, **p<0.01.
†Adjusted for time from symptom onset to imaging and admission National Institutes of Health Stroke Scale (NIHSS) in multivariable analysis.
‡Adjusted for admission NIHSS and collateral score in multivariable analysis.
AOL, arterial occlusive lesion; mRS, modified Rankin Scale; NIC, normalised iodine concentration.