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Table 2 Chi Squared approximation for difference in volume of collection based on size on D1

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

Amount of fluid in ml

Drain group

Non drain group

 

<4 cm

>4 cm

< 4 cm

>4 cm

Mean D1

2.30 ml

5.935 ml

2.452 ml

2.011

Total number of patients

37

14

34

17

  1. P = 0.313 (ns)
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BMC Surgery

ISSN: 1471-2482

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