Table 3 IPAQ item distributional characteristics for Section I (reusable pen) 1,2
N | Mean | SD | Floor (%) | Ceiling (%) | Range | |
|---|---|---|---|---|---|---|
1. Ease or difficulty of using the injection pen overall | 136 | 4.2 | 0.9 | 1 (0.7%) | 58 (42.6%) | 1.0-5.0 |
2a. Attaching and removing the needle | 136 | 4.6 | 0.8 | 0 (0.0%) | 98 (72.1%) | 2.0-5.0 |
2b. Preparing the injection pen by changing the cartridge or getting a new injection pen | 136 | 3.8 | 1.1 | 2 (1.5%) | 38 (27.9%) | 1.0-5.0 |
2c. Mixing the medicine | 136 | 4.2 | 1.0 | 0 (0.0%) | 67 (49.3%) | 2.0-5.0 |
2d. Removing the air bubbles | 136 | 3.7 | 1.1 | 4 (2.9%) | 42 (30.9%) | 1.0-5.0 |
2e. Remembering the dose that was prescribed by the doctor | 136 | 4.8 | 0.6 | 0 (0.0%) | 112 (82.4%) | 3.0-5.0 |
2f. Setting the dose | 136 | 4.7 | 0.8 | 1 (0.7%) | 108 (79.4%) | 1.0-5.0 |
2g. Changing the dose when the doctor changes the prescription3 | 107 | 4.8 | 0.6 | 0 (0.0%) | 90 (84.1%) | 2.0-5.0 |
2h. Using the needle guard3 | 111 | 4.6 | 0.6 | 0 (0.0%) | 78 (70.3%) | 2.0-5.0 |
2i. Injecting the medicine | 136 | 4.3 | 1.0 | 3 (2.2%) | 71 (52.2%) | 1.0-5.0 |
2j. Knowing when the injection pen has finished injecting the medicine | 136 | 3.4 | 1.4 | 12 (8.8%) | 42 (30.9%) | 1.0-5.0 |
2k. Handling the injection pen while preparing and injecting the medicine | 136 | 4.2 | 0.9 | 1 (0.7%) | 62 (45.6%) | 1.0-5.0 |
2l. Storing the injection pen in the refrigerator | 136 | 4.7 | 0.8 | 0 (0.0%) | 110 (80.9%) | 2.0-5.0 |
2m. Disposing of the cartridge or disposing of the injection pen | 136 | 4.6 | 0.7 | 0 (0.0%) | 99 (72.8%) | 2.0-5.0 |