Table 5.
“Known group” results comparing means for PROMIS® and legacy measures of mobility across GMFCS categories
| Measure | GMFCS Category Means (SD) 95% Confidence Interval of Mean | Significance Test Resultsa | Contrastsb | ||
|---|---|---|---|---|---|
| I | II | III-V | |||
| PROMIS® Mobility CAT (n = 31, 31, 17) | 45.45 (7.20) 43.14 – 47.77 |
42.56 (5.79) 40.44 – 44.69 |
41.09 (6.22) 37.89 – 44.29 |
F(2,78) = 2.90, p = .06 | I vs. II, p = 0.19 I vs. III-V, p = 0.07 II vs. III-V, p = 0.73 |
| PROMIS® Mobility Short Form (n = 33, 32, 17) | 45.06 (7.85) 42.28 – 47.85 |
40.53 (6.77) 38.09 – 42.97 |
36.06 (5.80) 33.07 – 39.04 |
F(2,81) = 9.55, p < .001 | I vs. II, p = 0.03 I vs. III-V, p < 0.001 II vs. III-V, p = 0.09 |
| PedsQL Movement and Balance (n = 32, 31, 17) | 90.31 (14.59) 85.05–95.57 |
80.48 (14.96) 75.00–85.97 |
70.88 (21.95) 59.59–82.17 |
F(2,79) = 8.01, p < .01 | I vs. II, p = 0.54 I vs. III-V, p < 0.01 II vs. III-V, p = 0.14 |
| PODCI Mobility (n = 33, 32, 17) | 92.61 (7.01) 90.12–95.09 |
85.50 (10.95) 81.55–89.45 |
63.41 (23.54) 51.31–75.51 |
F(2,81) = 27.13, p < .001 | I vs. II, p = 0.09 I vs. III-V, p <0.001 II vs. III-V, p <0.001 |
| PODCI Sports (n = 33, 32, 17) | 65.00 (17.05) 58.96–71.04 |
51.31 (17.86) 44.87–57.75 |
35.47 (17.83) 26.31–44.64 |
F(2,81) = 16.35, p < .001 | I vs. II, p < 0.01 I vs. III-V, p <0.001 II vs. III-V, p = 0.01 |
| FAQ (n = 33, 32, 17) | 9.21 (1.05) 8.84–9.59 |
8.13 (1.29) 7.66–8.59 |
5.82 (2.70) 4.44–7.21 |
F(2,81) = 25.03, p < .001 | I vs. II, p = 0.02 I vs. III-V, p <0.001 II vs. III-V, p <0.001 |
| SHC CP-CAT (n = 30, 28, 14) | 57.89 (3.88) 56.20 – 59.57 |
52.67 (5.02) 50.93 –54.41 |
43.80 (5.24) 41.34 – 46.27 |
F(2,71) = 44.49, p < .001 | I vs. II, p <0.001 I vs. III-V, p <0.001 II vs. III-V, p <0.001 |
| TUG (n = 31, 31, 15) | 7.66 (1.52) 7.10–8.22 |
9.04 (3.16) 7.88–10.20 |
19.49 (15.01) 11.18–27.81 |
χ2(2, 77) =26.19, p < .001 | I vs. II, p = 0.71 I vs. III-V, p <0.001 II vs. III-V, p <0.001 |
| GMFM Stand (n = 32, 31, 17) | 35.94 (3.37) 34.72–37.15 |
31.81 (5.94) 29.63–33.99 |
19.35 (10.73) 13.84–24.87 |
F(2,79) = 36.74, p < .001 | I vs. II, p = 0.04 I vs. III-V, p <0.001 II vs. III-V, p <0.001 |
| GMFM Walk (n = 32, 31, 17) | 67.06 (7.77) 64.26–69.86 |
53.71 (17.27) 47.37–60.04 |
23.65 (20.00) 12.29–32.37 |
F(2,79) = 46.92, p < .001 | I vs. II, p < 0.01 I vs. III-V, p <0.001 II vs. III-V, p <0.001 |
Note. GMFCS categories III, IV, and V are collapsed into a single category. PROMIS®=Patient Reported Outcome Measurement Information System; PedsQL=Pediatric Quality of Life Inventory™; PODCI=Pediatric Outcomes Data Collection Instrument; FAQ=Functional Assessment Questionnaire; SHC CP-CAT=Shriners Hospitals for Children CP-CAT; TUG=Time Up and Go; GMFM=Gross Motor Function Measure;
One-Way ANOVAs used for all tests except for the TUG, which used a Kruskal-Wallis (K-W) non-parametric test to examine significance between GMFCS categories;
pair-wise P-values calculated by Tukey’s HSD Post Hoc Test for all tests except for TUG, which used the Mann-Whitney U-test to determine significance between pairs of GMFCS Categories