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Table 5 Performance of the simplified risk score for the identification of newly detected diabetes mellitusa

From: Prevalence of diabetes mellitus and the performance of a risk score among Hindustani Surinamese, African Surinamese and ethnic Dutch: a cross-sectional population-based study

   AUC (bCI) Sens (%) Screen (%) Prev (%) NNS new
Hindustani Surinamese 0.58 (0.49–0.70)
  Total population     6.0  
  ≥ 5 points   94.4 97.3 6.6 16
  ≥ 8 points   94.4 80.7 8.0 13
  ≥ 11 points   38.9 42.0 6.3 16
African Surinamese 0.79 (0.70–0.89)
  Total population     3.1  
  ≥ 5 points   93.8 86.8 3.3 31
  ≥ 8 points   87.5 58.9 4.5 22
  ≥ 11 points   81.3 25.8 9.6 11
Ethnic Dutch 0.77 (0.68–0.85)
  Total population     3.1  
  ≥ 5 points   100 56.2 5.5 19
  ≥ 8 points   64.3 24.9 8.0 13
  ≥ 11 points   14.3 6.4 6.9 15
  1. a Persons with known DM were excluded from the analysis. Simplified score is presented in additional file 1: Risk score for DM SUNSET.pdf. Cut off values (number of points) chosen based on the 20–50–75 percentiles in the total population.
  2. DM = diabetes mellitus (fasting plasma glucose ≥ 7.0 mmol/l and/or self-reported), sens = sensitivity of the criteria at the given cut-off, screen = percentage of the total population that is screened at the given cut-off, prev = prevalence in the screened population (the predictive value positive), NNSnew = number needed to identify a case of newly detected DM, i.e. a previously undiagnosed case of DM in this study, AUC = area under the curve, a measure of diagnostic accuracy, bCI = 'confidence interval' estimated via a bootstrapping procedure [20], the 2.5 and 97.5 percentiles are listed between brackets.