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. 2011 Sep 28;12:214. doi: 10.1186/1745-6215-12-214

Table 4.

Protocol violation reporting and protocol violation frequency.

Protocol Violation Type Percent (number) of trials Proportion of Enrolled Participants with PVs
Median (range)
Calculated from trials with Explicit Reporting
Enrolment PVs
 Explicit reporting 12.5% (10/80) 0.8% (1.6% to 9.1%)
 Incomplete reporting 8.8% (7/80)
 Absent 78.8% (63/80)

Randomisation PVs
 Explicit reporting 8.8% (7/80) 0.7% (0.04% to 7.7%)
 Incomplete reporting 1.3% (1/80)
 Absent 90.0% (72/80)

Study Intervention PVs
 Explicit reporting 21.2% (17/80) 1.3% (0% to 13.2%)
 Incomplete reporting 21.2% (17/80)
 Absent 57.5% (46/80)

Patient compliance PVs
 Explicit reporting 47.5% (38/80) 7% (0.2% to 87%)
 Incomplete reporting 25.0% (20/80)
 Absent 27.5% (22/80)

Data Collection PVs
 Explicit reporting 21.3% (17/80) 1.7% (0.0% to 16.1%)
 Incomplete reporting 18.8% (15/80)
 Absent 60.0% (48/80)

Abbreviations: PV - protocol violations.