From: The influence of the direction of J-tip on the placement of a subclavian catheter: real time ultrasound-guided cannulation versus landmark method, a randomized controlled trial
Landmark group
Ultrasound group
(n = 30)
Male: female
15:15
16:14
Age, years
50 (16)
51 (14)
Height, cm
163 (8)
Weight, kg
62 (12)
65 (11)