Table 4 Reporting of methodological characteristics for different subgroups
Item | Multiple-center | Single-center | p | Teaching hospitals* | Non-teaching | p | Funding | No funding | p | 2002-2006 | 2007-2011 | p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
(n = 25) | (n = 1052) | (n = 254) | hospitals* (n = 818) | (n = 44) | (n = 1033) | (n = 446) | (n = 631) | |||||
Adequate random | 13 (52%) | 148 (14.06%) | 0.000 | 46 (18.11%) | 114 (13.94%) | 0.103 | 6 (13.64%) | 155 (15%) | 0.803 | 12 (2.69%) | 149 (23.61%) | 0.000 |
sequence generation | ||||||||||||
(n = 161) | ||||||||||||
Adequate allocation | 5 (20%) | 5 (0.48%) | 0.000 | 9 (3.54%) | 1 (0.12%) | 0.000 | 3 (6.82%) | 7 (0.68%) | 0.006 | 1 (0.22%) | 9 (1.43%) | 0.053 |
concealment | ||||||||||||
(n = 10) | ||||||||||||
Adequate blinding | 2 (8%) | 4 (0.38%) | 0.007 | 5 (1.97%) | 0 (0%) | 0.001 | 1 (2.27%) | 5 (0.48%) | 0.222 | 1 (0.22%) | 5 (0.79%) | 0.410 |
(n = 6) | ||||||||||||
Incomplete outcome | 12 (48%) | 976 (92.78%) | 0.000 | 214 (84.25%) | 769 (94.01%) | 0.000 | 29 (65.9%) | 959 (92.84%) | 0.000 | 416 (93.27%) | 572 (90.65%) | 0.123 |
data (low risk) | ||||||||||||
(n = 988) | ||||||||||||
Selective reporting | 0 (0%) | 18 (1.71%) | 1.000 | 3 (1.18%) | 15 (1.83%) | 0.588 | 0 (0%) | 18 (1.74%) | 1.000 | 6 (1.35%) | 12 (1.9%) | 0.483 |
(n = 18) |