n

2 Continuous + 5 Study Sites

Between-site variance = 0.5²

Between-site variance = 1

Power (Age)

Power (Push)

Power (Age)

Power (Push)

90

0.301

0.395

0.269

0.350

200

0.542

0.660

0.531

0.652

250

0.646

0.774

0.625

0.772

300

0.705

0.829

0.697

0.817

350

0.784

0.868

0.745

0.877

400

0.821

0.912

0.818

0.912