Fig. 3

Among patients with a larger BMI, percutaneous technique presented a better one-year infection-free catheter survival than surgical technique. Patients were grouped by insertion technique, i.e., percutaneous group (group P) and surgical group (group S). Then subgroups were created according to patients’ BMI. This figure shows only patients in subgroup A (BMI > 28, 12 percutaneous and 10 surgical). Follow-up period was one year. Then Kaplan–Meier analysis with log-rank test was performed for infection-free catheter survival. BMI, body mass index