Baseline comparisons in surgical trials.

Abstract:

INTRODUCTION:Baseline measurements are an essential component of clinical trials. They should establish that the groups involved are clinically equivalent so that any observed differences can be attributed to the intervention under evaluation. The objective of this study was to review the use of baseline comparisons in surgical trials. METHODS:A standardized format was used to evaluate 206 surgical trials published within 10 prestigious journals between January 1997 and December 1999. RESULTS:One hundred and fifty-one (73%) of the trials used the first table in the article to record baseline data. More than one-quarter of the trials declared less than five items and one-third of the trials inappropriately used 'P-values' as a measure of baseline equivalence. Only nine of the 54 multicentre studies (17%) mentioned the individual centres as possible confounding factors. DISCUSSION:Greater attention needs to be paid to baseline comparisons in surgical trials. One way of developing this type of critical ability is to use a checklist while reading a surgical trial of interest. Good resources include the CONSORT Statement by a group of prominent international biostaticians and the CLEAR (Critical Literature Evaluation and Research) Courses run by the Royal Australasian College of Surgeons.

journal_name

ANZ J Surg

journal_title

ANZ journal of surgery

authors

Hall JC,Hall JL

doi

10.1046/j.1445-2197.2002.02476.x

keywords:

subject

Has Abstract

pub_date

2002-08-01 00:00:00

pages

567-9

issue

8

eissn

1445-1433

issn

1445-2197

pii

2476

journal_volume

72

pub_type

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