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Table 2 Registry-publication concordance and discrepancies in discordant studies

From: Registration and primary outcome reporting in behavioral health trials

Studies n (%)
Concordant vs. discordant studies ( n =53)
 Concordant 16 (30)
 Discordant 37 (70)
Discrepancies identified in discordant studies ( n =37)
 Primary outcome(s) described in registration was/were not explicitly defined 19 (36)
 Registration did not state how primary outcome(s) would be measured/codified 16 (30)
 Published manuscript(s) reporting results of registered trial include at least one unregistered primary outcome 16 (30)
 Primary outcome(s) described in registration was/were not measured according to registration prescribed timing protocol 14 (26)
 Published manuscript(s) reporting results of registered trial did not report on all registered primary outcomes 11 (21)
 Secondary outcome(s) described in registration was/were promoted to primary outcome(s) in published manuscript(s) reporting trial results 5 (9)
 Registration prescribed timing protocol for measuring primary outcome(s) was not adequately defined 4 (7)
 Primary outcome(s) described in registration was/were de-emphasized or demoted to secondary outcome(s) in published manuscript(s) reporting trial results 4 (7)