Medians and interquartile ranges of Beck's depression inventory 21 values in different glucose tolerance categories checked by oral glucose tolerance test in elderly Finns

Normal glucose tolerance* (n=367)Impaired glucose tolerance(n=92)Type 2 diabetes mellitus(n=32)
Correlation between qualitative insulin sensitivity check index and Beck's depression inventory 21§−0.037; P=0.492−0.24; P=0.029Not feasible
Beck's depression inventory 21 median (interquartile range)5.0 (2.0-8.0)6.0 (4.0-8.5)6.0 (3.5-8.0)
Difference in median (95% confidence interval)Control1 (0 to 2)1 (−1 to 2)
Wilcoxon rank-sum test P valueControl0.0150.380
Control0.639
  • * People with fasting glucose concentration of <6.1 mmol/l and 2 hour blood glucose concentration of < mmol/l in oral glucose tolerance test. Thus the normal glucose tolerance group includes also those with impaired fasting glucose (fasting glucose concentration 5.6-6.0 mmol/l).

  • † People with a fasting glucose concentration of < mmol/l and 2 hour blood glucose concentration of 7.8-11.0 mmol/l in oral glucose tolerance test.

  • ‡ People with fasting glucose concentration of ≥6.1 mmol/l or 2 hour blood glucose concentration of ≥11.1 mmol/l in oral glucose tolerance test.

  • § Spearman partial correlation coefficient between qualitative insulin sensitivity check index and Beck's depression inventory 21 scores adjusting for body mass index, smoking, alcohol consumption, physical inactivity, sex, and basic education.