Plasma glucose levels in South Pacific populations

Source:

Raper, L.R. et al. (1983). Plasma glucose distributions in two Pacific populations: the bimodality phenomenon. Tohoku J. exp. Med. 141 , Suppl., 199-206.

These data were read from their Figure 2d, which gives log two-hour plasma glucose (mg/100 ml) in a sample of 89 Western Samoa females, aged 45-54.

Remarks:

Considering the standard errors of the estimates, this analysis is entirely consistent with that given in the original paper. This fit assumes a constant coefficient of variation. An attempt to find an unconstrained fit failed to converge.

 Fitting Normal components

 Proportions and their standard errors
    .83071    .16929
    .04118    .04118

 Means and their standard errors
  102.1054  262.6237
    2.7290   15.3135

 Sigmas (CONSTANT COEF. OF VAR. =   .2148) and standard error
   21.9279   56.4005
    1.8619

 Degrees of freedom = 15 - 1 +   0 -  0 -  4 -   0 =  10

 Chi-squared =  13.2848            (P =  .2082)
 * WARNING *  GOODNESS-OF-FIT TEST MAY BE INVALID;   3 EXPECTED COUNTS ARE < 1