Table 1: Indexing of articles from database searches.

VariablePubMedEMBASECENTRALCINAHLSPORTDiscusDAO

Initial search
(%)27 (75)9 (36)29 (80.6)11 (30.6)3 (8.3)0 (0)
 (95% CI)(57.8–87.9)(12.1–42.2)(64.0–91.8)(16.3–48.1)(1.8–22.5)(NA)
Follow-up search
(%)34 (94.4)31 (86.1)35 (97.2)19 (52.8)6 (16.7)0 (0)
 (95% CI)(81.3–99.3)(70.5–95.3)(85.5–99.9)(35.5–69.6)(6.4–32.8)(NA)
NNR912162118NA

Notes: Total number of articles included = 36; CENTRAL: Cochrane Central Register of Controlled Clinical Trials; CINAHL: Cumulative Index to Nursing and Allied Health Literature; DAO: Dissertation Abstracts Online; (%): number and percentage of articles; 95% CI: 95% confidence interval; NNR: Number needed to review, calculated by dividing the total number of citations to review per database divided by the number of studies included from the initial search; NA: not applicable.