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Table 2 Statistical analyses for the reduction in SMoS in spine patients compared to expected population values, separated by age group and gender

From: Proposed objective scoring algorithm for walking performance, based on relevant gait metrics: the Simplified Mobility Score (SMoS™)—observational study

Age group Population Sample Difference
Mean (± SD) Mean (± SE) n Mean difference (95% CI) P
Total 74.3 ± 3.63 58.7 ± 1.68 182 − 15.6 (− 18.90 to − 12.30) < .001
 Male 77.2 ± 9.75 60.0 ± 2.42 90 − 17.2 (− 21.95 to − 12.45) < .001
 Female 69.7 ± 8.73 57.0 ± 2.40 92 − 12.7 (− 17.40 to − 8.00) < .001
30–39 75.9 ± 3.90 66.4 ± 4.03 32 − 9.5 (− 17.40 to − 1.60) < .001
 Male 78.6 ± 9.59 64.1 ± 5.39 20 − 14.5 (− 25.06 to − 3.94) < .001
 Female 71.2 ± 9.20 70.2 ± 6.03 12 − 1.1 (− 12.83 to 10.83) 0.689
40–49 75.1 ± 3.31 63.4 ± 3.84 41 − 11.7 (− 19.23 to − 4.17) < .001
 Male 77.5 ± 9.77 59.2 ± 5.39 24 − 18.3 (− 28.86 to − 7.74) < .001
 Female 70.9 ± 8.20 68.7 ± 5.09 17 − 2.2 (− 12.18 to 7.78) 0.258
50–59 73.7 ± 4.39 68.8 ± 4.35 30 − 4.8 (− 13.42 to 3.62) 0.348
 Male 76.5 ± 9.56 75.2 ± 6.09 14 − 1.3 (− 13.24 to 10.64) 0.465
 Female 68.6 ± 9.30 63.3 ± 5.9 16 − 5.3 (− 16.84 to 6.26) 0.023
60–69 68.5 ± 3.49 57.0 ± 3.2 36 − 11.5 (− 17.77 to − 5.23) < .001
 Male 74.2 ± 9.71 54.6 ± 4.41 17 − 19.6 (− 28.25 to − 10.95) < .001
 Female 64.0 ± 8.50 49.7 ± 4.66 19 − 14.3 (− 23.43 to − 5.17) < .001
70+ 60.4 ± 3.53 46.7 ± 2.42 43 − 13.7 (− 18.45 to − 8.95) < .001
 Male 65.0 ± 10.1 49.9 ± 3.25 16 − 15.1 (− 21.47 to − 8.73) < .001
 Female 55.5 ± 8.3 44.9 ± 3.33 27 − 10.6 (− 17.13 to − 4.07) < .001
  1. n number of individuals