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. 2024 May 2;25:346. doi: 10.1186/s12891-024-07427-9

Table 3.

Means, standard deviation, median and interquartile range for objective measurements

Outcome measures Baseline
Mean (SD)/median (IQR)
Follow-up
Mean (SD)/median (IQR)
Healthy Controls
Mean (SD)/median (IQR)
Butterfly (AAe) 2 (0.8)/1.8 (1.5–2.2) 1.7 (0.5)/1.6 (1.4–1.9) 1.5 (0.3)/1.5 (1.3–1.7)
Butterfly (AAm) 3.4 (1.3)/3.1 (2.7–3.5) 3 (0.8)/2.8 (2.5–3.6) 2.7 (0.5)/2.6 (2.3–2.9)
Butterfly (AAd) 5.3 (1.9)/4.8 (4-6.4) 4.7 (1.5)/4.2 (3.9-5) 4.1 (0.6)/4 (3.7–4.3)
Butterfly (TOTe) 66.6 (13.3)/70.1 (63.3–76.1) 72.1 (10.2)/73.1 (67.5–78.5) 73.5 (6.4)/74.3 (70.2–79)
Butterfly (TOTm) 36.4 (10.8)/37.3 (29.4–44) 41.3 (12.6)/40.6 (31.1–47.7) 44.1 (9.7)/44.4 (38.6–50.5)
Butterfly (TOTd) 18.1 (7.2)/19 (12-23.7) 20.9 (8)/20.9 (17.5–23.1) 22.5 (5.4)/23.5 (20.6–25.9)
Butterfly (OSe) 7.3 (4.2)/6.1 (5-8.2) 6.6 (3.8)/6.4 (3.5–8.9) 5.7 (2.8)/5.1 (3.6-8)
Butterfly (OSm) 16.6 (7.6)/14.8 (11.9–19.6) 14.8 (6.2)/14.6 (9.4–18.2) 14 (5.9)/12.4 (9.5–18.3)
Butterfly (OSd) 17 (8)/16.5 (10.8–19.8) 17 (7.1)/14.8 (11.1–22) 16.2 (6.7)/14.8 (11.9–20.1)
Butterfly (USe) 26 (10.7)/24.5 (18.1–30) 21.3 (8.1)/21.9 (15.6–24) 20.8 (6.3)/18.8 (17-23.5)
Butterfly (USm) 47 (9.6)/46.4 (41.9–51.3) 44 (10.8)/44.1 (36.8–52) 41.9 (9.4)/39.8 (36.5–47.6)
Butterfly (USd) 64.8 (7.4)/63 (60-68.2) 62.1 (7.4)/63 (58-66.5) 61.4 (6.8)/61.2 (58.3–64.6)
Butterfly (SMI) 2.0 (0.7)/1.8 (1.50–2.33) 1.9 (0.59)/2.0 (1.52–2.02) 2.2 (0.53)/2.3 (1.90–2.54)

*SD: standard deviation; IQR: interquartile range; AA: Amplitude Accuracy; e: easy; m: medium; d: difficult; TOT: Time on Target, OS: Overshoot, US: Undershoot, SMI: Smoothness of Movement Index