Figure 3.

(a) Rate of successful completion of each test-case scenario and (b) percentage of patients requiring assistance for success at each test-case scenario.

For each of the four test-case scenarios:

Scenario 1, evaluation of the patient holding the needle in place for 5 s.

Scenario 2, evaluation of the patient checking the window of the MTX pen to confirm delivery of MTX.

Scenario 3, evaluation of the patient appropriately performing the skin pinch for injection.

Scenario 4, evaluation of the patient properly disposing of the MTX pen after injection.