Table 2—

Results of the mixture model for countries where the cut point is biologically meaningful

RegionCountrySDMFasting plasma glucose
2-h plasma glucose
Excluding known diabetes
Including known diabetes
Excluding known diabetes
Including known diabetes
μ1σ1μ2σ2Cut pointP valueμ1σ1μ2σ2Cut pointP valueμ1σ1μ2σ2Cut pointP valueμ1σ1μ2σ2Cut pointP value
North EuropeSweden2255.40.57.92.46.7<0.015.91.912.73.711.10.1307.32.418.24.113.60.073
Germany1195.50.59.03.27.00.038
Central EuropeHolland2125.50.58.83.17.0<0.01
South EuropeSpain675.40.66.92.46.6<0.016.71.914.01.712.00.078
Eastern Mediterranean and Middle EastEgypt1355.10.79.74.16.9<0.015.10.711.84.96.7<0.015.71.310.36.88.5<0.016.01.718.46.110.2<0.01
AfricaMauritius4105.20.68.23.16.8<0.015.20.69.03.56.8<0.015.62.014.04.29.5<0.01
IndiaIndia4744.60.77.74.26.4<0.015.61.512.65.39.4<0.015.11.212.56.78.2<0.01
JapanJapan756.11.915.13.111.70.090
Asia remainingTaiwan1836.92.314.94.712.70.031
Singapore2145.40.47.82.76.70.0755.40.48.83.36.70.055
Korea7384.90.46.71.96.1<0.01
Australia and New ZealandAustralia4645.40.58.02.76.8<0.01
Pacific IslandsNauru1285.40.79.33.57.20.0275.50.811.84.87.40.0175.91.712.03.89.70.048
Tonga1656.51.613.33.110.50.053
North AmericaU.S.1,8265.40.58.63.46.9<0.016.21.915.16.011.2<0.01
Total5.10.58.02.96.7<0.015.30.68.33.76.8<0.016.11.814.15.111.0<0.016.11.815.86.010.9<0.01
  • Data for means, SD, and cut points are in mmol/l. The P value is the level of significance of the mixture model over the unimodal normal distribution. The χ2 distribution with 4 d.f. is used.