Table 3.
Number of items and length of time for administration of the PROMIS® Mobility CAT, for entire sample (n = 79) and by Gross Motor Function Classification System (GMFCS) category
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| Number of Items Administered | Time (Minutes) | ||||||||||
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| # of items in item bank | Mean | Median | Min | Max | N (%) who stopped at min items | N (%) who reached max items | Mean | Median | Min | Max | |
| Total Sample | 23 | 6.70 | 6.70 | 5 | 12 | 47 (57.3) | 12 (14.5) | 1.66 | 1.00 | <1.0 | 25.0 |
| GMFCS Category | |||||||||||
| I (n = 31) | 23 | 7.23 | 6.00 | 5 | 12 | 14 (42.4) | 6 (19.4) | 2.10 | 1.00 | <1.0 | 25.0 |
| II (n = 31) | 23 | 6.52 | 5.00 | 5 | 12 | 21 (65.6) | 5 (16.1) | 1.39 | 1.00 | <1.0 | 6.0 |
| III-V (n = 17) | 23 | 6.06 | 5.00 | 5 | 12 | 12 (70.6) | 1 (5.9) | 1.35 | 1.00 | <1.0 | 5.0 |
Note. PROMIS® = Patient Reported Outcome Measurement Information System; 79 of the 82 children in the study sample had data for the PROMIS® Mobility CAT.