Table 2

Characteristics of reproducibility in psychiatry studies

CharacteristicsVariables
N (%)95% CI
Funding*
(n=296)
University14 (4.73)
Hospital2 (0.68)
Public72 (24.3)
Private/Industry16 (5.41)
Non-profit3 (1.01)
Mixed46 (15.54)
No statement listed111 (37.5)
No funding received32 (10.81)
Conflict of interest statement
(n=296)
Statement, one or more conflicts of interest31 (10.47)7 to 13.9
Statement, no conflict of interest146 (49.32)43.7 to 55
No conflict of interest statement119 (40.2)34.7 to 45.8
Data availability
(n=211)
Statement, some data are available14 (6.64)3.8 to 6.6
Statement, data are not available0 (0)0 to 0
No data availability statement197 (93.36)90.5 to 93.4
Material availability
(n=185)
Statement, some materials are available22 (11.89)8.2 to 15.6
Statement, materials are not available0 (0)0 to 0
No materials availability statement163 (88.11)84.4 to 91.8
Protocol available
(n=211)
Full protocol4 (1.90)0.4 to 3.4
No protocol207 (98.10)96.6 to 99.6
Analysis scripts
(n=211)
Statement, some analysis scripts area available1 (0.47)0 to 1.3
Statement, analysis scripts are not available0 (0)0 to 0
No analysis script availability statement210 (99.53)98.7 to 100
Replication studies
(n=211)
Reports a replication or novel study4 (1.90)0.4 to 3.4
Does not report replication or novel study207 (98.10)96.6 to 99.6
Cited by meta-analysis or systematic review†
(n=185)
No citations119 (59.20)53.6 to 64.8
A single citation39 (19.40)14.9 to 23.9
One–five citations39 (19.40)14.9 to 23.9
Greater than five citations4 (2.00)0.4 to 3.6
Preregistration
(n=211)
Statement, says was preregistration13 (6.16)3.4 to 8.9
Statement, was not preregistration0 (0)0 to 0
No, there is no preregistration statement198 (93.84)91.1 to 96.6
  • *Some studies included multiple funding sources.

  • †No studies were explicitly excluded from the systematic reviews that cited the original article.