Table 3.

Risk factors for white thrombus

	White thrombus		Univariate	Multivariate
	Yes	No	P Value	Odds ratio	95% CI	P Value
No. of surgical procedures	17	34
Mean age ± SD, yrs	18.5 ± 14.6	22.4 ± 18.3	0.450
Operation side			0.382
Right	7	19
Left	10	15
Clinical phenotype			0.228
TIA		23
Ischemic stroke	3	1
ICH	0	2
Headache	4	3
Asymptomatic	1	4
Others	0	1
MRA stage			0.066
1	0	1		control
2	8	22		1.71E+08	0-inf	0.996
3	6	11		9.27E+08	0-inf	0.996
4	3	0		6.22E+15	0-inf	0.993
Antiplatelet treatment	11	28	0.181
Mean clamp time ±SD, min	51.8 ± 13.4	51.0 ± 14.0	0.849
Fluorescence emission timing			0.001
EARLIEST	6	18		control
INTERMEDIATE	1	12		0.286	0.02–2.79	0.281
LATEST	10	4		12.300	1.91–78.7	0.008

CI: confidence interval

ICH: intracranial haemorrhage

SD: standard deviation

TIA: transient ischemic attack