Is the routine drainage after surgery for thyroid necessary? - A prospective randomized clinical study [ISRCTN63623153]

Table 1 Volume of fluid collection in the two groups as assessed by USG on D 1 & D7

Amount of fluid	Drain group		Non drain group
	D1	D7	D1	D7
Mean	3.258 ml	1.819 ml	2.345 ml	1.366 ml
Minimum	0 ml	0 ml	0 ml	0 ml
Maximum	40 ml	35 ml	19 ml	14.2 ml
Total number of patients	51	51	51	51
Two sample T test for detection of difference in means of fluid collected on D1 & DD7 respectively
Unequal variance	T	DF	P
D1	0.9	81.5	0.371
D7	0.58	72.9	0.577

ISSN: 1471-2482