Table 3.

Overall view MDS for the COVID-19 registry system

Rank	Top groups	The number of main classes	The number of sub class	The number of data element
1	Administrative data	2	5	34
2	Disease exposure data	2	7	61
3	Medical history and physical examination data	3	27	138
4	Clinical diagnostic test findings data	3	12	101
5	Disease progress and outcome of treatment data	3	7	55
6	Medical diagnosis and cause of death data	3	6	12
7	Follow-up‏ ‏data	1	4	14
8	COVID-19 vaccination data	1	2	19
Total		18	70	434