Fig. 1From: Impact of the Ultrasonic scalpel on the amount of drained lymph after axillary or inguinal lymphadenectomyTime to drain removal according to scalpel. Comparison of control vs. harmonic scalpel using Cox proportional hazards regression adjusting for gender, age (continuous), body mass index (−25.0 [, [25–30 [and [30+), procedure and sentinel node biopsy : hazard ratio 0.85, 95% confidence interval (0.51; 1.33), p = 0.426Back to article page