Table 2.

Sex differences in the mean blood flows of intracranial arteries.

	Total	Female	Male	P value
Total number (Female : Male)	129	86	43
Mean age ± SD	48.2 ± 16.8	47.0 ± 16.0	50.8 ± 18.1	0.274
Left ICA	342.8 ± 111.1	360.3 ± 109.7	308.3 ± 107.0	0.012
Right ICA	330.7 ± 115.7	348.0 ± 116.0	296.5 ± 108.5	0.013
BA	166.0 ± 68.3	169.2 ± 73.8	159.6 ± 56.2	0.387
Left ACA (A1)	118.3 ± 52.5	123.9 ± 50.6	107.2 ± 55.1	0.073
Right ACA (A1)	100.6 ± 46.7	106.8 ± 45.9	88.6 ± 46.3	0.026
Left MCA	167.1 ± 54.8	172.8 ± 54.2	155.8 ± 54.8	0.153
Right MCA	185.8 ± 62.3	190.9 ± 62.9	175.9 ± 60.6	0.119
Left PCA (P1)	85.0 ± 35.3	88.0 ± 36.9	79.3 ± 31.6	0.167
Right PCA (P1)	91.5 ± 44.4	93.2 ± 47.7	88.2 ± 37.8	0.556
Left ACA (A2)	96.0 ± 41.2	101.0 ± 43.0	86.1 ± 35.9	0.067
Right ACA (A2)	86.0 ± 35.8	91.5 ± 37.5	75.2 ± 29.8	0.017
Left PCA (P2)	88.9 ± 39.7	97.8 ± 42.0	70.7 ± 26.9	<0.001
Right PCA (P2)	96.1 ± 38.5	102.3 ± 38.9	83.0 ± 34.5	0.014
ACoA	32.1 ± 32.4	29.9 ± 30.8	36.4 ± 35.6	0.478
Left PCoA	48.8 ± 42.1	51.8 ± 45.3	37.9 ± 26.9	0.558
Right PCoA	62.8 ± 41.6	59.7 ± 37.9	73.6 ± 52.8	0.318
Total inflow	839.5 ± 232.5	877.5 ± 235.3	764.4 ± 209.8	0.008
Total outflow #1	749.0 ± 218.7	791.7 ± 219.2	668.4 ± 196.5	0.006
Total outflow #2	711.4 ± 219.7	746.4 ± 222.2	640.5 ± 199.2	0.015
Left total outflow #1	369.5 ± 111.7	383.0 ± 110.4	343.6 ± 110.9	0.075
Right total outflow #1	382.0 ± 131.4	401.4 ± 134.5	346.5 ± 119.3	0.034
Left total outflow #2	350.0 ± 115.5	369.7 ± 116.9	309.9 ± 102.6	0.015
Right total outflow #2	365.7 ± 116.0	382.7 ± 118.9	329.9 ± 102.4	0.012

P-value, prevalence ratio for the Wilcoxon rank sum test.