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Table 1 Characteristics of the datasets used in the unrestricted and restricted analyses

From: Benefits of applying a proxy eligibility period when using electronic health records for outcomes research: a simulation study

Percentage with missing data Unrestricted analysis Restricted analysis
N Mean (SD) months of data N Mean (SD) months of data
10% 6,717 11.4 (0.01) 6,045 12 (0)
20% 6,717 10.8 (0.02) 5,373 12 (0)
30% 6,717 10.2 (0.02) 4,701 12 (0)
40% 6,717 9.6 (0.02) 4,030 12 (0)
50% 6,717 9.0 (0.03) 3,358 12 (0)
60% 6,717 8.4 (0.03) 2,686 12 (0)
70% 6,717 7.8 (0.03) 2,015 12 (0)
80% 6,717 7.2 (0.04) 1,343 12 (0)
90% 6,717 6.6 (0.04) 671 12 (0)
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