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Table 2 Meta-analysis results for different transformations simulating dose-response relationships

From: Systematic review and meta-analysis of reduction in all-cause mortality from walking and cycling and shape of dose response relationship

  Walking Cycling
Dose-response Relative risk 95% CI Relative risk 95% CI
Linear 0.89 0.83-0.96 0.90 0.87-0.94
Log-linear 0.90 0.85-0.95 0.90 0.86-0.94
0.75 power 0.90 0.85-0.95 0.89 0.85-0.93
0.50 power 0.90 0.86-0.94 0.87 0.83-0.91
0.375 power 0.90 0.86-0.94 0.86 0.81-0.91
0.25 power 0.90 0.86-0.94 0.84 0.79-0.90
  1. Relative risks and 95% confidence interval estimated at 11.25 MET. hours per week.