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. 2019 Feb 13;10(1):1568134. doi: 10.1080/20008198.2019.1568134

Table 1.

Sample characteristics.

Variable BPD n = 49 HC n = 49 Statistics
Age, years (x̅/SD) 28.7 ± 7.3 31.2 ± 8.9 t96 = −1.52, p = .13
BMI (x̅/SD) 23.3 ± 3.3 22.3 ± 2.4 t84 = 1.69, p = .09
Years of education (x̅/SD) 11.5 ± 1.8 11.7 ± 1.4 t95 = −.72, p = .47
Intake of oral contraceptives (yes/no) 37/12 27/22 χ2 = 4.50, p = .034
Smoking (yes/no) 28/21 9/40 χ2 = 15.68, p < .001
BSL, sum (x̅/SD) 2.2 ± .79 .15 ± .22 t47 = 16.26, p < .001
BSL, behaviour (x̅/SD)
CTQ, sum (x̅/SD)
.25 ± .26
68.9 ± 19.3
.03 ± .07
33.6 ± 8.4
t50 = 5.4, p < .001
t91 = 11.57, p < .001

BPD = Borderline Personality Disorder; HC = Healthy Controls;  = Mean; SD = Standard Deviation; BSL = Borderline Symptom List; CTQ = Childhood Trauma Questionnaire