Adequate flow diagrams (n = 488) | Adjusted odds ratio (95% CI) | |
Year published | 1.20 (1.14 to 1.27) | p < 0.001 |
Number of participants | 1.01 (1.00 to 1.02) | p = 0.005 |
Journal impact factor | 1.70 (1.44 to 2.02) | p < 0.001 |
Multicentre study | 0.45 (0.18 to 0.11) | p = 0.083 |
Prospective online trial registration | 2.44 (1.26 to 4.72) | p = 0.008 |
Recruitment rate in percent (n = 256) | Coefficient (95% CI) | |
Year published | 0.03 (− 0.06 to 0.12) | p = 0.517 |
Number of participants | 0.03 (− 0.06 to 0.12) | p = 0.544 |
Journal impact factor | − 4.29 (− 6.16 to − 2.43) | p < 0.001 |
Multicentre study | − 3.66 (− 14.79 to 7.43) | p = 0.518 |
Prospective online trial registration | − 8.01 (− 15.09 to − 0.93) | p = 0.027 |
Retention rate in percent (n = 363) | Coefficient (95% CI) | |
Year published | − 0.01 (− 0.18 to 0.16) | p = 0.924 |
Number of participants | − 0.03 (− 0.05 to 0.00) | p = 0.022 |
Journal impact factor | 0.25 (− 0.25 to 0.75) | p = 0.332 |
Multicentre study | − 0.67 (− 3.32 to 1.98) | p = 0.620 |
Prospective online trial registration | − 0.21 (− 2.21 to 1.78) | p = 0.834 |