Table 1 Search algorithm in MEDLINE and EMBASE through Ovid

1

overview$.ti

108,964

2

review.ti

1,453,974

3

synthesis.ti

782,922

4

summary.ti

42,580

5

cochrane.ti

7783

6

analysis.ti

2,519,554

7

1 or 2 or 3 or 4 or 5 or 6

4,659,119

8

reviews.ti

27,163

9

meta-analyses.ti

10,716

10

articles.ti

15,515

11

umbrella.ti

4259

12

8 or 9 or 10 or 11

54,662

13

7 and 12

17,585

14

"umbrella review".ab

2117

15

meta-review.ti,ab

707

16

metareview.ti,ab

57

17

15 or 16

753

18

13 or 14 or 17

18,415

19

limit 18 to english language

17,635

20

limit 19 to humans

14,377

21

limit 20 to yr = "1990—2022"

13,632