Table 2 A priori hypothesis for criterion validity, criterion validity, mean difference between measured steps and observed steps, and mean percentage measurement error for each physical activity monitor separately for each position
Position and type of monitor | A priori hypothesis ICC(2,1) | ICC(2,1) (95%CI) | Mean difference (95%CI) | Mean % measurement error (95%CI) |
|---|---|---|---|---|
Hip-worn Misfit Shine, left | ||||
All (34 measures) | 0.5 to 0.75 | 0.52 (0.21 to 0.73) | −61.99 (− 104.50 to − 19.50) | −12.46% (− 21.09 to − 3.83) |
Rollator (11 measures) | <  0.5 | 0.56 (0.04 to 0.86) | −73.00 (− 163.94 to 17.94) | −15.87% (− 35.30 to 3.55) |
Without rollator (23 measures) | ≥ 0.75 | 0.49 (0.13 to 0.75) | −56.71 (− 107.56 to − 5.88) | − 10.83% (− 20.76 to − 0.90) |
Hip-worn Misfit Shine, right | ||||
All (88 measures) | 0.5 to 0.75 | 0.64 (0.47 to 0.75) | −48.35 (− 74.47 to − 22.24) | −8.75% (− 14.10 to − 3.40) |
Rollator (31 measures) | <  0.5 | 0.44 (0.08 to 0.69) | − 110.19 (− 169.15 to − 51.24) | − 20.44% (− 31.87 to − 9.02) |
Without rollator (57 measures) | ≥ 0.75 | 0.78 (0.66 to 0.87) | −14.72 (− 36.11 to 6.65) | − 2.38% (− 7.39 to 2.61) |
Hip-worn Garmin Vivofit 3, left | ||||
All (100 measures) | 0.5 to 0.75 | 0.67 (0.53 to 0.78) | −41.49 (− 64.21 to − 18.76) | − 9.74% (− 15.16 to − 4.33) |
Rollator (36 measures) | <  0.5 | 0.57 (0.19 to 0.78) | −87.5 (− 131.23 to − 43.83) | −20.61% (− 31.02 to − 10.18) |
Without rollator (64 measures) | ≥ 0.75 | 0.71 (0.56 to 0.81) | −15.59 (− 39.88 to 8.71) | −3.63% (− 9.42 to 2.16) |
Hip-worn Garmin Vivofit 3, right | ||||
All (102 measures) | 0.5 to 0.75 | 0.80 (0,72 to 0,87) | −22,61 (− 37.50 to − 7.72) | − 5.18% (− 9.01 to − 1.36) |
Rollator (35 measures) | <  0.5 | 0.74 (0.45 to 0.87) | −44.11 (− 70.02 to − 18.21) | − 10.12% (− 16.60 to − 3.64) |
Without rollator (67 measures) | ≥ 0.75 | 0.83 (0.73 to 0.89) | −11.38 (− 29.46 to 6.70) | −2.61% (− 7.35 to 2.13) |
Hip-worn Jawbone UP Move, left | ||||
All (84 measures) | 0.5 to 0.75 | 0.61 (0.34 to 0.76) | −63.75 (− 87.94 to − 39.56) | −13.11% (− 18.24 to − 7.98) |
Rollator (23 measures) | <  0.5 | 0.40 (0.00 to 0.72) | − 101.65 (− 144.66 to − 58.64) | −19.21% (− 27.48 to − 10.94) |
Without rollator (61 measures) | ≥ 0.75 | 0.64 (0.44 to 0.78) | −49.45 (− 78.44 to − 20.48) | − 10.81% (− 17.19 to − 4.43) |
Hip-worn Jawbone UP Move, right | ||||
All (92 measures) | 0.5 to 0.75 | 0.47 (0.21 to 0.65) | −85.79 (− 116.65 to − 54.95) | −16.57% (− 23.02 to − 10.12) |
Rollator (31 measures) | <  0.5 | 0.24 (0.00 to 0.54) | − 193.83 (− 258.89 to − 128.78) | −38.28% (− 51.73 to − 24.84) |
Without rollator (61 measures) | ≥ 0.75 | 0.68 (0.51 to 0.80) | − 30.89 (− 54.96 to − 6.83) | −5.53% (− 10.86 to − 0.20) |
Wrist-worn Misfit Shine, left | ||||
All (36 measures) | 0.5 to 0.75 | 0.18 (0.00 to 0.46) | −238.43 (−313.06 to − 163.81) | −44.21% (− 57.66 to − 30.78) |
Rollator (12 measures) | <  0.5 | 0.00 (0.00 to 0.07) | − 486.5 (− 568.45 to − 404.55) | −91.03% (− 95.79 to − 86.27) |
Without rollator (24 measures) | ≥ 0.75 | 0.37 (0.00 to 0.68) | − 114.40 (− 170.90 to − 57.89) | − 20.80% (− 31.65 to − 9.96) |
Wrist-worn Misfit Shine, right | ||||
All (88 measures) | 0.5 to 0.75 | 0.23 (0.00 to 0.47) | − 220.38 (− 266.13 to −174.64) | − 41.91% (− 50.49 to − 33.34) |
Rollator (30 measures) | <  0.5 | 0.02 (0.00 to 0.09) | − 462.83 (− 518.31 to − 407.34) | −89.03% (− 97.04 to − 81.02) |
Without rollator (58 measures) | ≥ 0.75 | 0.55 (0.10 to 0.77) | − 94.97 (− 124.91 to − 65.03) | − 17.55% (− 23.39 to − 11.71) |
Wrist-worn Garmin Vivofit 3, left | ||||
All (88 measures) | 0.5 to 0.75 | 0.31 (0.06 to 0.52) | − 139.71 (−186.39 to − 93.05) | − 27.17% (− 36.14 to − 18.20) |
Rollator (22 measures) | <  0.5 | 0.00 (0.00 to 0.08) | − 455.78 (− 524.28 to − 387.27) | −88.31% (− 98.97 to − 77.67) |
Without rollator (66 measures) | ≥ 0.75 | 0.67 (0.51 to 0.79) | −34.36 (− 61.45 to − 7.28) | −6.79% (− 12.43 to −1.15) |
Wrist-worn Garmin Vivofit 3, right | ||||
All (89 measures) | 0.5 to 0.75 | 0.33 (0.08 to 0.53) | − 132.98 (− 179.05 to − 86.91) | − 26.47% (− 35.62 to − 17.33) |
Rollator (23 measures) | <  0.5 | 0.01 (0.00 to 0.08) | − 455.17 (− 519.00 to − 391.34) | −88.98% (− 98.99 to − 78.96) |
Without rollator (66 measures) | ≥ 0.75 | 0.76 (0.63 to 0.84) | −20.70 (− 42.4786 to 1.069512) | −4.69% (− 10.21 to 0.82) |
Wrist-worn Jawbone UP Move, left | ||||
All (65 measures) | 0.5 to 0.75 | 0.30 (0.03 to 0.52) | − 121.52 (−166.86 to − 76.19) | −21.87% (− 30.14 to − 13.61) |
Rollator (7 measures) | <  0.5 | 0.01 (0.00 to 0.23) | − 480.86 (− 640.08 to − 321.64) | −84.97% (− 110.58 to − 59.38) |
Without rollator (58 measures) | ≥ 0.75 | 0.47 (0.18 to 0.68) | −78.15 (− 112.13 to − 44.18) | −14.25% (− 20.81 to − 7.70) |
Wrist-worn Jawbone UP Move, right | ||||
All (55 measures) | 0.5 to 0.75 | 0.29 (0.02 to 0.53) | − 105.05 (−148.00 to − 62.11) | −18.89% (− 26.65 to − 11.13) |
Rollator (3 measures) | <  0.5 | 0.00 (0.00 to 0.88) | − 386.0 (− 1157.00 to 384.91) | − 66.17% (− 195.37 to 63.01) |
Without rollator (52 measures) | ≥ 0.75 | 0.38 (0.06 to 0.61) | −88.84 (− 126.23 to − 51.46) | −16.16% (− 23.13 to − 9.19) |