Table 6.

Area under the curve of various test variables in 2008 predicting to the onset of glucose intolerance at 4- year follow-up.

Test Result Variable(s)	Area under the curve	P
SELENOP in 2008	0.826	0.019*
Waist circumference in 2008	0.677	0.202
HOMA-IR in 2008	0.590	0.518
Age in 2008	0.500	1.000
HbA1c in 2008	0.656	0.259
Fasting blood glucose in 2008	0.482	0.897
Selenium in 2008	0.669	0.222
GPX3 in 2008	0.282	0.116

^*p < 0.05.

See Table 1 for abbreviations.