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. 2022 Mar 22;10(1):e30366. doi: 10.2196/30366

Table 4.

Items included in the final model in order of decreasing difficulty.

Item (level)a Item parameter Fit statistics
Measure (logits) Model SE Infit mean square Outfit mean square Point-biserial correlation
Line Roller: sidesteps bilateral (10) 4.62 0.53 0.42 0.53 0.72
Line Roller: sidesteps unilateral (8) 4.55 0.50 0.50 0.53 0.34
Car Racer (8) 4.10 0.15 0.61 0.71 0.77
Car Racer (10) 3.98 0.23 0.49 0.56 0.78
Car Racer (10)b 3.86 0.13 0.56 1.56 0.74
Line Roller: sidesteps bilateral (6) 3.10 0.31 0.45 0.50 0.85
Car Racer (8)b 2.81 0.09 0.63 0.87 0.74
Line Roller: sidesteps unilateral (6) 2.74 0.29 0.32 0.33 0.92
Line Roller: sidesteps unilateral (4) 2.72 0.23 0.70 0.70 0.68
Line Roller: sidesteps bilateral (4) 2.64 0.25 0.78 0.86 0.65
Berg Balance Scale item 14 2.49 0.09 1.28 1.31 0.72
Line Roller: sidesteps unilateral (2) 2.29 0.25 0.90 0.98 0.58
Berg Balance Scale item 12 1.93 0.08 1.37 1.17 0.78
Line Roller: sidesteps bilateral (2) 1.93 0.31 0.56 0.58 0.49
Cross the Road: free steps (10) 1.54 0.48 0.44 0.46 0.94
Veggie Guard (8) 1.53 0.36 0.48 0.50 0.69
Berg Balance Scale item 13 1.47 0.08 1.04 1.03 0.78
Berg Balance Scale item 11 1.32 0.08 0.90 0.87 0.83
Car Racer (4) 1.10 0.17 0.79 0.79 0.66
Car Racer (6) 0.78 0.14 1.00 1.05 0.63
Cross the Road: free steps (6) 0.69 0.54 0.97 0.90 0.72
Skiliner (5) 0.62 0.17 0.83 1.07 0.66
Mine Cart (8) 0.50 0.23 1.08 0.99 0.62
Cross the Road: free steps (8) 0.38 0.63 0.33 0.24 0.88
Skiliner (4) 0.37 0.14 0.81 0.96 0.60
Mine Cart (10) 0.20 0.38 0.79 1.21 0.44
Skiliner (3) 0.19 0.19 0.91 0.80 0.66
Berg Balance Scale item 7 0.07 0.09 1.18 0.97 0.80
Car Racer (4)b 0.02 0.11 1.11 1.34 0.65
Car Racer (6)b –0.14 0.09 0.98 0.95 0.73
Cross the Road: forward-backward step (6) –0.19 0.28 1.53 1.20 0.68
Berg Balance Scale item 8 –0.22 0.10 1.07 1.43 0.74
Skiliner (2) –0.33 0.25 0.76 0.70 0.72
Mine Cart (10)b –0.34 0.13 1.17 1.20 0.56
Cross the Road: forward-backward step (4) –0.35 0.35 0.85 0.83 0.66
Berg Balance Scale item 10 –0.59 0.10 0.89 0.83 0.77
Berg Balance Scale item 9 –0.73 0.11 1.12 0.74 0.77
Airplane (2) –0.94 0.56 1.83 1.34 0.59
Cross the Road: forward-backward step (8) –0.95 0.39 1.16 0.76 0.47
Mine Cart (2) –1.17 0.54 0.71 0.51 0.71
Mine Cart (6) –1.27 0.27 0.76 0.75 0.51
Berg Balance Scale item 6 –1.43 0.12 0.87 0.78 0.73
Mine Cart (8)b –1.45 0.15 1.33 1.17 0.58
Berg Balance Scale item 5 –1.92 0.13 1.19 0.75 0.70
Cross the Road: forward-backward step (2) –1.94 0.65 1.18 1.08 0.42
Car Racer (2) –1.98 0.54 0.97 0.75 0.61
Skiliner (1) –2.06 1.06 1.08 0.99 0.14
Airplane (10) –2.07 0.37 1.12 1.36 0.28
Mine Cart (4) –2.17 0.41 0.68 0.27 0.70
Berg Balance Scale item 1 –2.19 0.14 0.86 0.77 0.70
Berg Balance Scale item 4 –2.29 0.14 1.05 0.68 0.66
Mine Cart (4)b –2.45 0.17 1.27 1.43 0.54
Airplane (10)b –2.61 0.18 1.37 1.25 0.34
Berg Balance Scale item 2 –2.68 0.16 1.03 0.33 0.64
Airplane (4)b –2.70 0.24 1.47 1.13 0.59
Mine Cart (6)b –2.80 0.18 1.28 1.24 0.47
Airplane (8)b –3.33 0.22 1.47 1.18 0.35
Airplane (6) –3.38 0.62 0.80 0.51 0.39
Airplane (2)b –3.87 0.45 1.09 0.49 0.63
Airplane (6)b –4.03 0.25 1.31 0.80 0.46
Berg Balance Scale item 3 –8.97 1.83 mmc mm 0.00

aExergames are described in Figure 2.

bThese exercises were performed in a seated position.

cmm: minimum measure.