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Table 4 Event date difference among all data sources for index and subsequent abortions

From: Validating abortion procedure coding in Canadian administrative databases

Days difference Frequency Percent Cumulative Frequency Cumulative Percent
−30 1 0.09 1 0.09
−7 1 0.09 2 0.17
−3 1 0.09 3 0.26
−1 2 0.17 5 0.44
0 1136 99.13 1141 99.56
1 3 0.26 1144 99.83
2 1 0.09 1145 99.91
6 1 0.09 1146 100