Table 3 Analysis of author’s country of affiliation and collaboration productivity

Total

–

157 (100%)

115 (100%)

115 (100%)

387 (100%)

–

Journal impact factor (JIF)

JIF < 2

52 (33.1%)

45 (39.1%)

79 (68.7%)

176 (45.5%)

< 0.0001

2 ≤ JIF < 4

62 (39.5%)

44 (38.3%)

26 (22.6%)

132 (34.1%)

JIF ≥ 4

43 (27.4%)

26 (22.6%)

10 (8.7%)

79 (20.4%)

Yearly number of citations (n)

n < 10

64 (40.8%)

74 (64.3%)

83 (72.2%)

221 (57.1%)

< 0.0001

10 ≤ n < 50

72 (45.9%)

35 (30.4%)

32 (27.8%)

139 (35.9%)

50 ≤ n < 100

12 (7.6%)

4 (3.5%)

0 (0.0%)

16 (4.1%)

n ≥ 100

9 (5.7%)

2 (1.7%)

0 (0.0%)

11 (2.8%)

Journal access

Open

59 (37.6%)

55 (47.8%)

74 (64.3%)

188 (48.6%)

< 0.0001

Hybrid

80 (51.0%)

56 (48.7%)

39 (33.9%)

175 (45.2%)

Non-open

18 (11.5%)

4 (3.5%)

2 (1.7%)

24 (6.2%)

Systematic review geographical coverage

Country-specific

18 (11.5%)

30 (26.1%)

43 (37.4%)

91 (23.5%)

< 0.0001

Global/multiple regions

85 (54.1%)

19 (16.5%)

13 (11.3%)

117 (30.2%)

Middle East and North Africa/ Arab world

21 (13.4%)

23 (20.0%)

29 (25.2%)

73 (18.9%)

Middle East/ Asia/ Gulf Cooperation Council

24 (15.3%)

22 (19.1%)

23 (20.0%)

69 (17.8%)

North Africa/ East Africa/ Africa

9 (5.7%)

21 (18.3%)

7 (6.1%)

37 (9.6%)

Systematic review health topic

Alcohol, substance, and nicotine abuses

11 (7.0%)

2 (1.7%)

5 (4.3%)

18 (4.7%)

NS

Cardiovascular disease

7 (4.5%)

6 (5.2%)

4 (3.5%)

17 (4.4%)

Diabetes

7 (4.5%)

8 (7.0%)

6 (5.2%)

21 (5.4%)

Other metabolic syndromes

5 (3.2%)

7 (6.1%)

3 (2.6%)

15 (3.9%)

Genetics

1 (0.6%)

3 (2.6%)

5 (4.3%)

9 (2.3%)

Infectious disease

46 (29.3%)

46 (40.0%)

41 (35.7%)

133 (34.4%)

Mental health

8 (5.1%)

12 (10.4%)

8 (7.0%)

28 (7.2%)

Nutrition

8 (5.1%)

1 (0.9%)

5 (4.3%)

14 (3.6%)

Cancer

12 (7.6%)

4 (3.5%)

12 (10.4%)

28 (7.2%)

Other

41 (26.1%)

24 (20.9%)

23 (20.0%)

88 (22.7%)

Trauma/Injury/Violence

11 (7.0%)

2 (1.7%)

3 (2.6%)

16 (4.1%)