Table 3.

Regional differences in dementia with Lewy bodies (DLB) diagnosis^a

	North East	East Anglia	t-test	χ2-test	P
Core features of DLB at time of diagnosis, mean (s.d.) range	1.5 (0.9) 0–3	2.1 (0.9) 0–3	–2.78	–	0.007
Suggestive features of DLB at time of diagnosis, including FP-CIT scan, mean (s.d.) range	0.8 (0.8) 0–2	0.4 (0.5) 0–1	2.63	–	0.011
Abnormal FP-CIT scan prior to diagnosis, n	24	1	–	12.9	0.001
FP-CIT scan prior to diagnosis (including normal), n	31	1	–	20.6	<0.001
Total diagnostic features (core and suggestive) of DLB at time of diagnosis, mean (s.d.)	2.4 (1.0)	2.6 (0.9)	−0.80	–	0.42
Time between first secondary care appointment and final diagnosis in years, mean (s.d.) range	1.4 (1.7) 0–7	0.9 (1.9) 0–8	1.03	–	0.31

FP-CIT, ¹²³I-N-ω-fluoropropyl-2beta-carbomethoxy-3beta-4-iodophenyl nortropane brain single-photon emission computerised tomography.

^a.Core and suggestive features as set out in the 2005 diagnostic criteria.⁸