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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Qual Life Res. 2013 Mar 31;22(10):10.1007/s11136-013-0397-6. doi: 10.1007/s11136-013-0397-6

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


Number of Items Administered Time (Minutes)

# 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.