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Table 3 Adjusted* risk of a cardiovascular event (5 year), mean systolic and diastolic blood pressure at 12-month follow up in the two comparison groups (AR vs NNT)

From: Randomized trial evaluating the framing of cardiovascular risk and its impact on blood pressure control [ISRCTN87597585]

Outcome variable Risk presented as Risk presented as   
  Absolute Risk (AR) Number Needed to   
  (n = 205) Treat (NNT)   
   (n = 196)   
5-year cardiovascular risk 180 (87.8%) 168 (85.7%) Adjusted odds ratio = 1.53 p = 0.23
≥ 10%    (95%CI 0.76,3.08)  
Mean absolute 5-yr risk in 18.3 (8.0) 18.1 (8.0) Adjusted difference = 0.69 p = 0.16
%(SD)    (95%CI -0.27,1.66)  
Mean SBP in mmHg (SD) 153 (17) 154 (20) Adjusted difference = 0.97 (95%CI -2.34,4.29) p = 0.56
    (95%CI -2.34,4.29)  
Mean DBP in mmHg (SD) 86 (9) 85 (9) Adjusted difference = 0.70 (95%CI -1.05,2.45) p = 0.43
    (95%CI -1.05,2.45)  
  1. Outcome variables adjusted for baseline measurement of outcome variable, practice computer system and method of presentation of risk (chart or computer)