Table 3—

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)
 30–393,4612.71.64.80.41.54.60.32.815.80.32.711.0
 40–492,6676.71.65.10.41.54.70.32.715.00.37.410.3
 50–591,58710.11.75.40.51.64.70.32.715.30.311.010.2
 ≥601,55911.91.75.70.51.64.90.32.715.60.312.610.5
Chinese (age in years)
 30–391,7251.71.64.80.31.64.80.32.613.80.31.711.3
 40–491,6085.71.75.30.41.65.00.32.714.90.36.010.8
 50–591,04810.31.75.70.51.65.10.32.714.80.310.810.6
 ≥6099418.61.96.50.51.75.30.32.815.70.318.011.8
Indian (age in years)
 30–395905.31.65.10.41.64.80.32.613.80.36.010.3
 40–4939614.71.85.90.51.65.00.32.816.40.214.011.2
 50–5918224.22.07.10.61.75.40.32.816.90.325.010.6
 ≥6021326.31.96.70.61.64.90.32.715.00.328.19.4
Other Indigenous (age in years)
 30–391,3921.31.54.60.31.54.50.32.715.00.31.311.3
 40–497804.01.64.80.41.54.60.32.816.50.33.711.5
 50–594724.51.64.90.41.54.60.32.816.40.34.311.4
 ≥605447.21.75.20.41.64.80.32.714.50.36.910.9
  • Sample included imputed BG for known diabetic subjects without BG measurements.