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Table 1 Number and percentage of queries generated (all queries)

From: Clinical Trials: Minimising source data queries to streamline endpoint adjudication in a large multi-national trial

Type of query

Frequency

Relative %

Unique Subject Identifiers1

115

14.7

Missing baseline or event ECGs

117

15.0

Missing Troponin2/cardiac enzymes

83

10.6

Missing results/reports3

131

16.8

Illegible or obscured data

105

13.4

Dates/signatures4

181

23.1

Additional information5

50

6.4

Total

782

100

  1. Erroneous or inconsistent1; level, type, or lower limit of detection2; neurological or cardiac imaging3; erroneous, missing, or inconsistent dates; missing signatures4; insufficient clinical information to permit adjudication5.