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. 2017 Mar 14;17:41. doi: 10.1186/s12874-017-0320-x

Table 1.

Frequency and proportion of available papers (n = 140) with records in MEDLINE and EMBASE

Database Number of papers Proportion of available papers (95% CI)
MEDLINE 128 91% (86–95%)
EMBASE 119 85% (78–90%)