Table 4.
Average Item Difficulty in Descending Order and Frequency of Responses for each Option
| Item # | How confident are you that you will not lose your balance of become unsteady when you… | Difficulty (logits) | Frequency of responses (%) | ||||
|---|---|---|---|---|---|---|---|
| No confidence (0) | Low confidence (1) | Moderate confidence (2) | High confidence (3) | Complete confidence (4) | |||
| 16 | …walk on icy sidewalks | 1.75 | 191 (42.6) | 92 (20.5) | 96 (21.4) | 52 (11.6) | 17 (3.8) |
| 6 | …stand on a chair to reach | 1.14 | 211 (47.1) | 50 (11.2) | 70 (15.6) | 66 (14.7) | 51 (11.4) |
| 15 | …ride an escalator not holding the rail | 0.94 | 194 (43.3) | 62 13.8) | 58 (12.9) | 72 (16.1) | 62 (13.8) |
| 5 | …reach while standing on your tiptoes* | 0.40 | 142 (31.7) | 55 (12.3) | 71 (15.8) | 93 (20.8) | 87 (19.4) |
| 13 | …walk in a crowd or get bumped** | 0.02 | 83 (18.5) | 76 (17.0) | 80 (17.9) | 123 (27.5) | 86 (19.2) |
| 14 | …ride an escalator holding the rail | −0.22 | 111 (24.8) | 43 (9.6) | 47 (10.5) | 98 (21.9) | 149 (33.3) |
| 11 | …walk up and down a ramp | −0.42 | 46 (10.3) | 71 (15.8) | 99 (22.1) | 135 (30.1) | 97 (21.7) |
| 12 | …walk in a crowed mall | −0.44 | 69 (15.4) | 58 (12.9) | 65 (14.5) | 124 (27.7) | 132 (29.5) |
| 7 | …sweep the floor | −0.66 | 73 (16.3) | 43 (9.6) | 56 (12.5) | 92 (20.5) | 184 (41.1) |
| 2 | …walk up and down stairs | −0.89 | 33 (7.4) | 51 (11.4) | 82 (18.3) | 148 (33.0) | 134 (29.9) |
| 10 | …walk across a parking lot | −1.11 | 41 (9.2) | 31 (6.9) | 61 (13.6) | 124 (27.7) | 191 (42.6) |
| 3 | …pick up a slipper from the floor | −1.24 | 30 (6.7) | 35 (7.8) | 66 (14.7) | 130 (29.0) | 187 (41.7) |
| 8 | …walk outside to a nearby car | −1.69 | 20 (4.5) | 19 (4.2) | 61 (13.6) | 117 (26.1) | 231 (51.6) |
| 1 | …walk around the house | −1.80 | 13 (2.9) | 18 (4.0) | 70 (15.6) | 145 (32.4) | 202 (45.1) |
| 9 | …get in and out of a car | −2.09 | 10 (2.2) | 16 (3.6) | 56 (12.5) | 127 (28.3) | 239 (53.3) |
| 4 | …reach at eye level | −2.15 | 12 (2.7) | 16 (3.6) | 32 (7.1) | 123 (27.5) | 265 (59.2) |
Items misfitting the Partial Credit Model are bolded.
*
to address misfit reword to “…stand on your tiptoes”
**
to address misfit reword to “…get bumped”