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Table 4 Effectiveness of TLC-PA-China to promote physical activity

From: A RCT to evaluate a totally automated, culturally-adapted telephone counselor for increasing physical activity among physically inactive individuals in China

   > = 150 min/wk. at least moderate intensity physical activity (%)
Group N Baseline 3 months 6 months
Control 101 0.0 6.9 13.9
Intervention 109 0.0 42.2 44.0
    RR (95% CI) = 6.09 (2.99, 12.79) RR (95% CI) = 3.18 (1.91, 5.42)
    ARI = 35.27% ARI = 30.18%
    RRI = 508.91% RRI = 217.69%
    NNT = 2.84 NNT = 3.31
  1. Study was conducted at Shenzhen, China between July and August 2009
  2. RR Relative Risk, ARI Absolute Risk Increase, RRI Relative Risk Increase, NNT Number Needed to Treat