. 2015 May 1;12(2):36–37. doi: 10.1192/s2056474000000258

Table 2. Projected financial and environmental costs of DNA for initial assessments.

Parameters	Values
Number of initial assessments seen across 33 trusts per year	199 344
Number of DNAs for initial assessments across 33 trusts per year	23 596
National DNA rate for initial assessments	11.8%
Average number of DNAs per trust per year for initial assessments	715
Average financial cost of healthcare use per patient following DNA (taken from values reported in Table 1)	£1 044 999
Average environmental cost of healthcare use per patient following DNA (taken from values reported in Table 1)	534 kg CO₂e
Total financial cost per trust per year of DNAs for initial assessment	£714 000
Total environmental cost per trust per year of DNAs for initial assessment	293 tonnes CO₂e