Table 2. Characteristics of the participants in the training set.

Characteristics	Poor LMCs (n=10)	Good LMCs (n=10)	HCs (n=10)	P value
Age (mean ± SD), years	71.2±15.7	59.2±14.5	58.1±8.5	0.067
Gender (female), n [%]	6 [60]	2 [20]	5 [50]	0.171
Medical history, n [%]
Hypertension	9 [90]	5 [50]	4 [40]	0.054
Hyperlipidemia	2 [20]	2 [20]	6 [60]	0.091
Diabetes mellitus	1 [10]	2 [20]	1 [10]	0.749
Coronary heart disease	3 [30]	0	1 [10]	0.133
Obesity (BMI ≥25 kg/m2)	1 [10]	2 [20]	4 [40]	0.271
Current smoking	2 [20]	6 [60]	4 [40]	0.187

HCs, healthy controls; LMCs, leptomeningeal collaterals; SD, standard deviation; BMI, body mass index.