Table 3 Power of Methods for Missing Data Percentages (10% and 40%) and Mechanisms

SSS^a

10%

0.8370

0.9355

0.9225

0.9355

40%

0.5705

0.6125

0.5750

0.5600

Modified SSS^b (Dawson Weight)

10%

0.8165

0.9000

0.8810

0.8970

40%

0.4445

0.3755

0.3660

0.3000

Modified SSS^b (Population Weight)

10%

0.8240

0.9075

0.8910

0.9075

40%

0.4990

0.4150

0.4105

0.3850

Modified SSS^b (SSTime Weight)

10%

0.8220

0.8675

0.8820

0.8990

40%

0.4770

0.3075

0.3795

0.3780

Fisher^c

10%

0.7655

0.6940

0.6710

0.6855

40%

0.3240

0.1505

0.1460

0.1195

Weighted Z-Transform^d

10%

0.8265

0.9080

0.8965

0.9085

40%

0.4990

0.4440

0.4355

0.4130