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      Dr SIngh Medicine logoDrSingh
      Keymaster

      PAR – proportion of cases in the total population that can be attributed to the risk factor

      PAR = p0 – p2 or an alternate formula, PAR = (p1 – p2) x n1/N
      Where:
      p0 = the proportion of ALL births with the outcome of interest (a + c / a + b + c + d)
      p1 = the proportion of births with the outcome of interest to mothers WITH the risk factor
      (a / a + b)
      p2 = the proportion of births with the outcome of interest to mothers WITHOUT the risk
      factor (c / c + d)
      N = the total number of births (a + b + c + d)
      n1= the number of births exposed to the risk factor (a + b)

      PAR% = p0 – p2/p0 x 100

      table

      • This topic was modified 3 years, 2 months ago by Dr SIngh Medicine logoDrSingh.
      • This topic was modified 3 years, 2 months ago by Dr SIngh Medicine logoDrSingh.
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