Table 6.

Currency and accrual rate of test articles tracked to appearance in each collection

Outcome	Epistemonikos	WHO	LitCovid	SOLES	Cochrane	PubMed
N Currenta	32/48 67%	36/50 72%	36/50 72%	30/50 60%	28/41 68%	38/50 76%
Median lagb (1st, 3rd quartile)	4 [1, 7]	5 [2, 6.5]	4 [2, 7]	8 [6.2, 9.8]	6 [3, 8]	2 [0, 4]
Number present after
1 day	5	5	5	1	0	7
3 daysc	16	15	16	2	9	27
5 days	22	25	23	4	13	30
7 days	24	33	28	12	18	35
10 days	28	36	35	23	24	37
14 days	32	39	36	30	28	38

^aDenominator corrected. Epistemonikos identified two of the target articles as “excluded.” Nine of the target articles were assessed as out of scope for the Cochrane collection by one investigator (RB) and verified by a second investigator (MS).

^bCalculated using articles that appeared within the 2-week monitoring period.

^cProportion of in-scope tracked articles identifiable in a collection within 3 days of appearance at the journal site was our primary outcome for the currency portion.