TABLE 2

Primary ciliary dyskinesia (PCD) population-based registries in Europe with national or near-national coverage: number of patients diagnosed and registered, and estimated prevalence^#

	Resident patients diagnosed with PCD (2019) n				Total inhabitants in catchment area n				Proportion of patients per 100 000 inhabitants n
	Total	0–19 years	20–39 years	≥40 years	Total	0–19 years	20–39 years	≥40 years	Total	0–19 years	20–39 years	≥40 years
Danish PCD Registry	136	49	61	26	5 814 461	1 296 896	1 467 759	3 049 806	2.3	3.8	4.2	0.9
Cyprus PCD Registry	44	14	16	14	864 236	189 491	273 657	401 088	5.1	7.4	5.9	3.5
Swiss PCD Registry	139	53	49	37	8 419 550	1 691 466	2 250 555	4 477 529	1.7	3.1	2.2	0.8
Norwegian PCD Registry	91	63	24	4	5 295 619	1 260 893	1 422 329	2 612 397	1.7	5.0	1.7	0.2

^#: prevalence was estimated by dividing the number of resident patients diagnosed with PCD by the total inhabitants in the catchment area, for each category and the total.