Table 2—

Parameter estimates of unimodal and bimodal models for post-challenge BG distributions in four ethnic populations

Ethnic/age groupn% With diabetesUnimodal normal model
Bimodal normal model
MeanGeometric mean (mmol/l)SDFirst mode
Second mode
MeanGeometric mean (mmol/l)SDMeanGeometric mean (mmol/l)SD% in second modeCut point
Malay (age in years)
 30–393,4261.71.54.70.31.54.60.32.816.10.31.611.5
 40–492,5753.31.64.90.41.54.70.32.715.20.33.610.9
 50–591,4803.71.65.00.41.64.80.32.714.90.33.911.1
 ≥604273.71.65.20.41.65.00.32.816.60.33.412.2
Chinese (age in years)
 30–391,7181.31.64.80.31.64.80.32.613.80.31.311.6
 40–491,5492.11.65.10.31.65.00.32.613.40.32.111.6
 50–599733.41.75.30.41.65.10.32.715.20.32.612.5
 ≥608626.21.75.70.41.75.30.32.816.00.35.512.3
Indian (age in years)
 30–395763.01.65.00.41.64.80.32.714.80.33.411.0
 40–493565.11.75.30.41.65.00.32.817.10.24.112.9
 50–591454.81.75.70.41.75.40.32.917.60.33.813.3
 ≥601665.41.75.20.41.65.00.42.715.50.44.912.1
Other Indigenous (age in years)
 30–391,3860.91.54.50.31.54.50.32.715.40.30.811.8
 40–497682.51.64.80.41.54.60.33.019.30.31.613.1
 50–594653.01.64.80.41.54.60.32.816.30.32.811.6
 ≥605253.81.65.00.41.64.80.32.715.00.33.311.9
  • Sample excluded imputed BG for known diabetic subjects without BG measurements.