Dataset:  breast_diep.csv

Source: D.G. Liang, J.R. Dusseldorp, C. van Schalkwyk, S. Hariswamy,
S. Wood, V. Rose, P. Moradi (2016). "Running Barbed Suture Quilting Reduces
Abdominal Drainage in Perforator-Based Breast Reconstruction,"
Journal of Plastic, Reconstructive & Aesthetic Surgery, Vol. 69, pp. 42-47.

Desription: Results of study of patients receiving breast reconstruction
with a deep inferior epigastric artery perforator (DIEP) flap.
Controls Group 27 Patiets without abdominal flap plication.
Treatment Group: 26 patients with abdominal flap.
Response: Total abdominal drainage (ml)

Variables:
trt    (1=Control, 2=Treatment)
age
totvol  (Total Volume Loss, in ml)