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=0.029 | Not 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) | Control | 1 (0 to 2) | 1 (−1 to 2) |
| Wilcoxon rank-sum test P value | Control | 0.015 | 0.380 |
| Control | 0.639 |
↵* 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.