Table 1

Allocation concealment by funding source and by trial outcome

Adequate
 Inadequate
 Unclear
 Total
 OR* (95% CI)
By Funding Source:
Industry Only
 16
 1
 27
 44
 1.00 (ref)
Not for Profit Only
 13
 2
 13
 28
 .55 (.21, 1.42)
Mixed +
 6
 1
 15
 22
 1.35 (.46, 3.98)
Not Reported
 1
 1
 4
 6
 1.26 (.21, 7.64)
Total
 36
 5
 59
 100
p = .377
By Direction and Statistical Significance of Trial Outcome:
Favoured New
 21
 4
 42
 67
 1.00 (ref)
Favoured Conventional
 4
 0
 2
 6
 .24 (.04, 1.32)
Neutral
 7
 1
 11
 19
 .82 (.29, 2.31)
Unclear
 4
 0
 4
 8
 .79 (.16, 3.84)
Total
 36
 5
 59
 100
p = .678

*OR = odds ratio of unclear allocation concealment, relative to clear (i.e., adequate or inadequate); + = funding by at least one industry source and at least one not-for-profit source

Clifford et al. BMC Health Services Research 2002 2:18   doi:10.1186/1472-6963-2-18