Table 3.

Methodological reporting in 2008 according to center and funding source

	Sequence generation	Allocation concealment	Blinding	Sample size calculation	Incomplete outecome	Intention-to-treat analysis	Free of selective reporting
	n (%)	n (%)	n (%)	n (%)	n (%)	n (%)	n (%)
Center
Single-center	20(64%)	14(45%)	13(42%)	21(68%)	17(55%)	17(55%)	21(68%)
(n = 31)
Multi-center	61(80%)	48(63%)	49(64%)	62(82%)	35(46%)	57(75%)	36(47%)
(n = 76)
P value	0.08	0.09	0.03	0.12	0.41	0.04	0.06
Funding source
Industry	37(86%)	31(72%)	30(70%)	34(80%)	18(42%)	28(65%)	21(49%)
(n = 43)
Public	28(70%)	20(50%)	19(48%)	30(75%)	23(58%)	28(72%)	25(63%)
(n = 40)
P value	0.07	0.04	0.04	0.66	0.16	0.64	0.21