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Table 5 Reviewers’ judgments on the correctness of drug use periods (drug use period test)

From: From prescription drug purchases to drug use periods – a second generation method (PRE2DUP)

Periods Reviewer HT Total
Correct Error Not Solvable
Reviewer MK Correct 635 36 10 681
Error 82 84 2 168
Not Solvable 23 4 124 151
Total 740 124 136 1000