Fig. 1From: Increased age and male sex are independently associated with higher frequency of blood–cerebrospinal fluid barrier dysfunction using the albumin quotientLinear regression analysis of albumin quotient (QAlb) and age in male and female patients. aQAlb and age were positively correlated in male (Spearman, p < 0.0001) and female (Spearman, p < 0.0001) patients. bThe slopes of the two regression lines were not significantly different (F test, p = 0.7149). cThe difference between the elevations was significant (F test, p < 0.0001)Back to article page