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Table 2 Multiple stepwise regression of NWS on mobility performance outcomes

From: The association between motor capacity and mobility performance: frailty as a moderator

 R2BSEBβtp
Maximal Number of Steps in One Bouta
 Step 1.285    <.001
  (constant) 3.84.42 9.20<.001
  NWS .38.15.282.58.011
 Step 2.031    .101
  (constant) 3.81.41 9.20<.001
  NWS .15.18.11.85.400
  dummy 1 pre-frail −.13.09−.17−1.46.148
  dummy 2 frail −.29.13−.28−2.17.033
 Step 3.048    .024
  (constant) 3.98.41 9.75<.001
  NWS −.70.35−.51−1.98.050
  dummy 1 pre-frail −.29.10−.39−2.82.006
  dummy 2 frail −.38.16−.38−2.37.020
  dummy 1 x NWS 1.08.46.472.35.021
  dummy 2 x NWS 1.05.40.422.64.010
 total R2 = .364 (N = 112; p = < .001)
Average Number of Steps per Bouta
 Step 1.137    .007
  (constant) 1.90.25 7.67<.001
  NWS .17.09.231.90.056
 Step 2.002    .869
  (constant) 1.90.25 7.58<.001
  NWS .14.11.191.27.206
  dummy 1 pre-frail −.01.05−.02−.15.883
  dummy 2 frail −.04.08−.07−.48.633
 Step 3.051    .044
  (constant) 1.99.25 8.02<.001
  NWS −.33.21−.45−1.54.126
  dummy 1 pre-frail −.10.06−.25−1.59.115
  dummy 2 frail −.08.10−.14−.79.430
  dummy 1 x NWS .63.28.512.27.026
  dummy 2 x NWS .56.24.422.32.022
 total R2 = .190 (N = 112; p = .008)
Cumulated PA
 Step 1.427    <.001
  (constant) 62.087.31 8.50<.001
  NWS 2.482.57.09.96.338
 Step 2.008    .461
  (constant) 61.587.36 8.37<.001
  NWS .203.19.01.06.950
  dummy 1 pre-frail −1.611.54−.11−1.05.298
  dummy 2 frail −2.822.34−.14− 1.20.231
 Step 3.021    .139
  (constant) 62.717.37 8.51<.001
  NWS −6.076.35−.23−.96.341
  dummy 1 pre-frail −3.051.87−.21−1.63.106
  dummy 2 frail −.852.91−.04−.29.772
  dummy 1 x NWS 15.418.31.341.85.067
  dummy 2 x NWS 4.217.19.09.59.560
 total R2 = .457 (N = 112; p < .001)
  1. Step 1 to 3 controlled for age, sex, number of comorbidities, and bmi
  2. NWS Normal walking speed
  3. a: log-transformed