Table 4 IPAQ item distributional characteristics for Section I (new disposable pen) 1,2
N | Mean | SD | Floor (%) | Ceiling (%) | Range | |
|---|---|---|---|---|---|---|
1. Ease or difficulty of using the injection pen overall | 134 | 4.3 | 1.0 | 1 (0.7%) | 75 (56.0%) | 1.0-5.0 |
2a. Attaching and removing the needle | 134 | 4.8 | 0.6 | 0 (0.0%) | 116 (86.6%) | 2.0-5.0 |
2b. Preparing the injection pen by changing the cartridge or getting a new injection pen | 134 | 4.5 | 0.8 | 1 (0.7%) | 91 (67.9%) | 1.0-5.0 |
2c. Mixing the medicine | 134 | 4.6 | 0.6 | 0 (0.0%) | 95 (70.9%) | 2.0-5.0 |
2d. Removing the air bubbles | 134 | 4.6 | 0.7 | 0 (0.0%) | 94 (70.1%) | 2.0-5.0 |
2e. Remembering the dose that was prescribed by the doctor | 134 | 4.8 | 0.6 | 1 (0.7%) | 117 (87.3%) | 1.0-5.0 |
2f. Setting the dose | 134 | 4.6 | 0.8 | 1 (0.7%) | 100 (74.6%) | 1.0-5.0 |
2g. Changing the dose when the doctor changes the prescription | 26 | 4.7 | 0.8 | 0 (0.0%) | 22 (84.6%) | 2.0-5.0 |
2h. Using the needle guard3 | 107 | 4.5 | 0.8 | 0 (0.0%) | 76 (71.0%) | 2.0-5.0 |
2i. Injecting the medicine | 134 | 4.1 | 1.2 | 3 (2.2%) | 69 (51.5%) | 1.0-5.0 |
2j. Knowing when the injection pen has finished injecting the medicine | 134 | 4.1 | 1.2 | 4 (3.0%) | 71 (53.0%) | 1.0-5.0 |
2k. Handling the injection pen while preparing and injecting the medicine | 134 | 4.3 | 1.1 | 1 (0.7%) | 82 (61.2%) | 1.0-5.0 |
2l. Storing the injection pen in the refrigerator | 134 | 4.4 | 1.1 | 3 (2.2%) | 98 (73.1%) | 1.0-5.0 |
2m. Disposing of the cartridge or disposing of the injection pen | 133 | 4.5 | 0.9 | 1 (0.8%) | 99 (74.4%) | 1.0-5.0 |