Skip to main content

Table 2 Result of a hand search for cluster randomised trials in the British Medical Journal

From: Cluster randomised trials in the medical literature: two bibliometric surveys

Year

Vol

Trials

Clustering ignored

Ignoring clustering judged as important

Found in Web of Science search

2003

326-7

9

0

0

5

1998

316-7

4

1(?)

1

0

1993

306-7

4

3

2

0

1988

296-7

0

0

0

0

1983

286-7

1

1

1

0

  1. ? doubtful whether clustering taken into account