Table 2 Journal impact factors analysis

Total

–

176 (100%)

132 (100%)

79 (100%)

387 (100%)

–

Yearly number of citations (n)

n < 10

139 (79.0%)

68 (51.5%)

14 (17.7%)

221 (57.1%)

< 0.0001

10 ≤ n < 50

37 (21.0%)

55 (41.7%)

47 (59.5%)

139 (35.9%)

50 ≤ n < 100

0 (0.0%)

9 (6.8%)

7 (8.9%)

16 (4.1%)

n ≥ 100

0 (0.0%)

0 (0.0%)

11 (13.9%)

11 (2.8%)

Journal access

Open

108 (61.4%)

59 (44.7%)

21 (26.6%)

188 (48.6%)

< 0.0001

Hybrid

59 (33.5%)

71 (53.8%)

45 (57.0%)

175 (45.2%)

Non-open

9 (5.1%)

2 (1.5%)

13 (16.5%)

24 (6.2%)

Publisher

Non-commercial

114 (64.8%)

54 (40.9%)

41 (51.9%)

209 (54.0%)

< 0.0001

Commercial

62 (35.2%)

78 (59.1%)

38 (48.1%)

178 (46.0%)

Systematic review geographical coverage

Country-specific

62 (35.2%)

21 (15.9%)

8 (10.1%)

91 (23.5%)

< 0.0001

Global/multiple regions

31 (17.6%)

42 (31.8%)

44 (55.7%)

117 (30.2%)

Middle East and North Africa/ Arab world

35 (19.9%)

31 (23.5%)

7 (8.9%)

73 (18.9%)

Middle East/ Asia/ Gulf Cooperation Council

37 (21.0%)

25 (18.9%)

7 (8.9%)

69 (17.8%)

North Africa/ East Africa/ Africa

11 (6.3%)

13 (9.8%)

13 (16.5%)

37 (9.6%)

Systematic review health topic

Alcohol, substance, and nicotine abuses

12 (6.8%)

5 (3.8%)

1 (1.3%)

18 (4.7%)

NS

Cardiovascular disease

8 (4.5%)

8 (6.1%)

1 (1.3%)

17 (4.4%)

Diabetes

6 (3.4%)

12 (9.1%)

3 (3.8%)

21 (5.4%)

Other metabolic syndromes

8 (4.5%)

3 (2.3%)

4 (5.1%)

15 (3.9%)

Genetics

2 (1.1%)

3 (2.3%)

4 (5.1%)

9 (2.3%)

Infectious disease

48 (27.3%)

49 (37.1%)

36 (45.6%)

133 (34.4%)

Mental health

18 (10.2%)

8 (6.1%)

2 (2.5%)

28 (7.2%)

Nutrition

7 (4.0%)

4 (3.0%)

3 (3.8%)

14 (3.6%)

Cancer

19 (10.8%)

5 (3.8%)

4 (5.1%)

28 (7.2%)

Other

38 (21.6%)

31 (23.5%)

19 (24.1%)

88 (22.7%)

Trauma/Injury/Violence

10 (5.7%)

4 (3.0%)

2 (2.5%)

16 (4.1%)