Evaluated Strategy

Explanation

1. Recall

During the next period, the participant is asked to recall event status.

2. Case deletion

Entire data from participants with missing data are deleted.

3. Period deletion

Only the data from the missing period onwards are deleted.

4. Assume event non-occurrence

In the case of a missing outcome, event non-occurrence is assumed

5. Assume event occurrence

In the case of a missing outcome, event occurrence is assumed

6. Single imputation

Using single imputation, event status is imputed

7. Multiple imputation

Using multiple imputation, event status is imputed