Assessing risk of suicide and aggression in hospitals: same but different.

value to define vitamin D deficiency or insufficiency is problematic because of the wide individual variability of the functional effects of vitamin D and interaction with calcium intakes’, and that the current strategy to quantify a defined level of a vitamin D metabolite may be inappropriate. In addition, while studies have predictably respected formalized levels of vitamin D deficiency and insufficiency, it may be more appropriate for any pathological impact being quantified in relation to differing disorders of interest by determining any ‘trend breaks’ where vitamin D levels may move from being of no impact to having some influence. G. Parker, H. Brotchie and A. Paterson School of Psychiatry, University of New South Wales, Sydney, Australia E-mail: [email protected]