Table 2.

The span in the indexing rate, per category

Category	No. of reviews with one or more reference included	No. of reviews with 100% of the references indexed in MEDLINE	No. of reviews with 100% of the references indexed in MEDLINE or Embase	No. of reviews with 50% or less of the references indexed in MEDLINE or Embase	Range of indexing rates
Health systems and organization of care	32	19	21	1	17-100%
Health promotion and preventive medicine	47	23	24	3	0-100%
Physical health - treatment	83	50	64	1	0-100%
Physical health - diagnostics	19	10	15	0	63-100%
Mental health - treatment	34	11	19	0	67-100%
Mental health - diagnostics	4	1	1	0	88-100%
Welfare	25	5	5	8	0-100%
Other	14	4	5	1	0-100%
Total	258	123 (48%)	154 (60%)	14 (5%)