From: Reliability of mobility measures in older medical patients with cognitive impairment
 | DEMMI | HABAM | POMA | SPPB | Gait speed a (n = 35) | 5x chair rise test (n = 16) | 2-min walk test (n = 35) | TUGb (n = 33) | BI mobility subscale | |
---|---|---|---|---|---|---|---|---|---|---|
Scale range and unit | 0–100 points | 0–26 points | 0–28 points | 0–12 points | Ratio scale (meter/second) | Ratio scale (seconds) | Ratio scale (meter) | Ratio scale (seconds) | 0–40 points | |
Mean ± SD score 1st measure | 38.5 ± 23.4 | 13.5 ± 7.6 | 10.5 ± 9.4 | 2.8 ± 3.2 | 0.62 ± 0.22 | 17.5 ± 4.1 | 71.5 ± 29.0 | 24.0 ± 13.5 | 18.7 ± 13.7 | |
Mean ± SD score 2nd measure | 38.7 ± 23.9 | 13.7 ± 7.8 | 10.9 ± 9.7 | 3.2 ± 3.6 | 0.67 ± 0.25 | 16.3 ± 5.2 | 75.9 ± 28.7 | 23.0 ± 12.2 | 19.5 ± 14.1 | |
Mean difference absolute (95% CI) | 0.3 (− 0.5 to 1.1) | 0.2 (− 0.1 to 0.6) | 0.4 (0.0 to 0.8) | 0.4 (0.2 to 0.6) | 0.04 (0.00 to 0.08) | −1.3 (− 3.1 to 0.6) | 4.4 (0.8 to 8.1) | − 1.0 (− 2.6 to 0,6) | 0.9 (0.1 to 1.6) | |
Mean difference relative to score of 1st measure | < 1% | 1% | 4% | 14% | 6% | 7% | 6% | 4% | 5% | |
P value for mean difference | 0.52 | 0.22 | 0.04 | < 0.001 | 0.04 | 0.16 | 0.02 | 0.22 | 0.03 | |
σ2p | 554.304 | 58.267 | 90.143 | 11.087 | 0.049 | 16.317 | 778.484 | 154.555 | 188.450 | |
σ2o | 0 | 0.01 | 0.062 | 0.074 | 0.001 | 0.44 | 8.221 | 0.169 | 0.288 | |
σ2residual | 5.239 | 1.106 | 1.153 | 0.372 | 0.007 | 5.838 | 55.479 | 9.999 | 4.519 | |
ICCAGREEMENT | 0.99 | 0.98 | 0.99 | 0.97 | 0.86 | 0.72 | 0.92 | 0.94 | 0.98 | |
95% CI for ICC | 0.99 to 0.99 | 0.97 to 0.99 | 0.98 to 0.99 | 0.92 to 0.98 | 0.75 to 0.93 | 0.38 to 0.89 | 0.84 to 0.96 | 0.88 to 0.97 | 0.96 to 0.99 | |
P value for ICC | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
SEMAGREEMENT (absolute value) | 2.29 | 1.06 | 1.10 | 0.67 | 0.09 | 2.51 | 7.98 | 3.19 | 2.19 | |
SEMAGREEMENT (relative to scale range) | 2.3% | 4.1% | 3.9% | 5.6% | na | na | na | na | 5.5% | |
SEMAGREEMENT (relative to mean 1st measure) | 5.9% | 7.9% | 10.5% | 23.9% | 14.5% | 14.3% | 11.2% | 13.3% | 11.7% | |
τ -correlation c | 0.30; P < 0.01 | −0.03; P = 0.77 | 0.38; P < 0.01 | 0.66; P < 0.01 | 0.18; P = 0.14 | 0.33; P = 0.08 | 0.22; P = 0.08 | 0.43; P < 0.01 | 0.15; P = 0.16 | |
Normal distribution of differencesd | P < 0.001 | P < 0.001 | P < 0.001 | P < 0.001 | P = 0.03 | P = 0.77 | P = 0.01 | P = 0.01 | P < 0.001 | |
95% LoA (log as function of X) | −0.11X + 0.3 to 0.11X + 0.3 | −2.7 to 3.2 | −0.22X + 0.4 to 0.22X + 0.4 | −0.34X + 0.4 to 0.34X + 0.4 | −0.34X + 0.04 to 0.34X + 0.04 | −0.35X - 1.3 to 0.35X - 1.3 | − 0.29X + 4.4 to 0.29X + 4.4 | − 0.28X - 1 to 0.28X - 1 | −0.26X + 0.9 to 0.26X + 0.9 | |
MDC90 | exact | 5.3 | 2.5 | 2.6 | 1.5 | 0.21 | 5.8 | 18.5 | 7.4 | 5.1 |
rounded up | 6 | 3 | 3 | 2 | na | na | na | na | 6 | |
MDC95 | exact | 6.3 | 2.9 | 3.1 | 1.9 | 0.25 | 6.9 | 22.1 | 8.8 | 6.1 |
rounded up | 7 | 3 | 4 | 2 | na | na | na | na | 7 |