Cross-national comparisons of antidepressant use among institutionalized older persons based on the minimum data set (MDS)

Antidepressant use was examined with samples from long-term care facilities in Toronto (Canada), Sapporo and Naie (Japan), Reykjavik (Iceland) and Prague (Czech Republic). Only in Iceland did the majority of residents with depression receive an antidepressant. Rates of depression and antidepressant use were uniformly low in Japan, and there was a great discrepancy between diagnosed depression and behavioural signs of depression in the Czech Republic. In all countries, about half the recipients of antidepressants have no clear indication of depression present. For some countries, antidepressant use was lower among residents who were female, older and more disabled. Depression is clearly under-diagnosed in the Czech Republic, but low rates of depression in Japan are somewhat more difficult to interpret. Given the widespread consensus that depression is under-detected and under treated, these results suggest that responses to depression could be improved through instruments like the MDS.