Wikidata:WikiCite/Statistics/Summary
Of the 41,458,756 items which are instance of (P31) 
of scholarly article (Q13442814) 
:
| With property | Without property | Coverage | |
|---|---|---|---|
| DOI (P356)
|
29,596,004 | 11,862,752 | 71.4% |
| PubMed ID (P698)
|
32,036,547 | 9,422,209 | 77.3% |
| main subject (P921)
|
17,457,870 | 24,000,886 | 42.1% |
| language of work or name (P407)
|
16,793,065 | 24,665,691 | 40.5% |
| author (P50)
|
11,606,828 | 29,851,928 | 28.0% |
| author name string (P2093)
|
38,760,042 | 2,698,714 | 93.5% |
| Only author (P50) , no author name string (P2093)
|
1,267,160 | 40,191,596 | 3.1% |
| Only author name string (P2093) , no author (P50)
|
28,420,374 | 13,038,382 | 68.6% |
Updated: 11 March 2024.