Table 2.

Total volume of lymph drained and duration of draining, according to type of scalpel

	Harmonic (n = 39)	Control (n = 40)	p-value
Total volume (ml)
Univariate	2908 ± 2453	3898 ± 5791	0.382
Multivariate-adjusted	2864 ± 715	3941 ± 706	0.293
Duration of draining (days)
Univariate	23 ± 14	28 ± 15	0.195
Multivariate-adjusted	24 ± 2	27 ± 2	0.290

Results are expressed as average ± standard deviation or as multivariate-adjusted average ± standard error. Between-group comparisons performed using analysis of variance adjusting for gender, age (continuous), body mass index (continuous), procedure and sentinel node biopsy