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 |