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Table 2 Validity analysis of Siconolfi step test (SST) against cardiopulmonary exercise test (CPET)

From: The Siconolfi step test: a valid and reliable assessment of cardiopulmonary fitness in older men with prostate cancer

Validity analysis Validity cohort
(N = 66)
>  60 years olds
(n = 56)
SST
 Predicted VO2peak (ml/kg/min):
  average (SD) 19.5 (5.1) 19.2 (5.2)
  range 10.8–35.5 10.8–35.5
 Heart rate (bpm): mean (SD) 141.6 (20.7) 142.2 (21.2)
CPET
 Measured VO2peak (ml/kg/min):
  average (SD) 21.1 (6.5) 19.8 (5.1)
  range 9.9–40.2 9.9–32.5
 Heart rate (bpm): mean (SD) 148.7 (15.9) 147.5 (16.2)
Pearson correlation
 r 0.69 0.73
P value < 0.001 < 0.001
 0.95% CI 0.54–0.80 0.58–0.83
Paired t-test
 average difference 1.61 0.64
P value 0.010 0.217
 0.95% CI 0.43–3.09 -0.38–1.66
ICC
 ICC 0.64 0.73
P value < 0.001 < 0.001
 0.95% CI 0.48–0.77 0.58–0.83
  1. Results are presented for all patients that participated in Visit 1 and provided valid SST and CPET data (validity cohort, N = 66) (column 1), and the subsample of patients older than 60 years (n = 56) (column 2). Validity is assessed with Pearson correlation (r), paired t-test and intraclass correlation coefficient (ICC). Statistical significance was considered at level of P < 0.05