Table 2 Summary of the applicable scenarios for each method
method | monotonicity | missing mechanisms | the ratio of the non-response units and the non-response items |
|---|---|---|---|
MMRM | monotonic | MCAR, MAR | Unrestricted |
non-monotonic | MCAR, MAR, MNAR | Unrestricted | |
MICE | monotonic | MCAR, MAR, MNAR | The proportion of unit non-response ≤ 0.5 |
non-monotonic | MCAR, MAR | The proportion of unit non-response ≤ 0.5 | |
PPMs (J2R, CR, CIR) | monotonic | MNAR | Unrestricted |
non-monotonic | - | - |