ORPHAcodes use for the coding of rare diseases: comparison of the accuracy and cross country comparability

Table 2 Distribution of ORPHAcodes collected during the study period per country/region and per aggregation level of the Orphanet classification

Country/region	Group of disorders		Disorder		Subtype of disorders
Country/region	N	%	N	%	N	%
Czech Republic	31	11.7	192	72.5	42	15.8
Malta	113	16.0	536	75.8	58	8.2
Romania	15	13.3	97	85.8	1	0.9
Spain	378	15.9	1719	72.3	281	11.8
Veneto region-IT	223	20.5	740	68.0	126	11.5
All countries/regions^a	557	17.8	2200	70.2	376	12.0

^aORPHAcodes used in more than one country/region have been considered only once in the global analysis

ISSN: 1750-1172