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Table 1 Study characteristics before (2001–2009) and after (2011–2018) introduction of the PRISMA Statement

From: Exploring reporting quality of systematic reviews and Meta-analyses on nursing interventions in patients with Alzheimer’s disease before and after PRISMA introduction

Characteristic

Before PRISMA (n = 18)

After PRISMA (n = 59)

Overall (n = 77)

χ2/ t

P

Type of article

   

4.53

0.09

Systematic reviews only

16 (88.9)

38 (69.6)

54 (70.1)

  

Meta-analyses only

1 (5.6)

4 (6.8)

5 (6.5)

  

Systematic reviews including meta-analyses

1 (5.6)

17 (28.8)

18 (23.4)

  

Origin region of first author

   

1.69

0.68

Asia

2 (11.1)

12 (20.3)

14 (18.2)

  

Europe

10 (55.6)

33 (55.9)

43 (55.8)

  

U.S.A/Canada

3 (16.7)

9 (15.3)

12 (15.6)

  

Australia

3 (16.7)

5 (8.5)

8 (10.4)

  

Number of authors

   

4.91

0.03

1~ 4

15 (83.3)

32 (54.2)

47 (61.0)

  

> 4

3 (16.7)

27 (45.8)

30 (39.0)

  

International collaborative authorship

   

0.05

0.82

No

16 (88.9)

49 (83.1)

65 (84.4)

  

Yes

2 (11.1)

10 (16.9)

12 (15.6)

  

Number of affiliations of first author

   

1.96

0.16

1~ 3

15 (83.3)

39 (66.1)

54 (70.1)

  

> 3

3 (16.7)

20 (33.9)

23 (29.9)

  

Affiliation of author

   

1.36

0.61

Hospital

2 (11.1)

5 (8.5)

7 (9.1)

  

University

12 (66.7)

46 (78.0)

58 (75.3)

  

Institute

4 (22.2)

8 (13.6)

12 (15.6)

  

journal type of published article

   

1.26

0.26

Nursing Journal

11 (61.1)

46 (78.0)

57 (74.0)

  

Non Nursing Journal

7 (38.9)

13 (22.0)

20 (26.0)

  

Number of included studies

   

0.05

0.83

< 10

5 (27.8)

18 (30.5)

23 (29.9)

  

≥10

13 (72.2)

41 (69.5)

54 (70.1)

  

RCT identified

   

10.44

0.01

Non-RCT

12 (66.7)

34 (57.6)

46 (59.7)

  

Only RCT

1 (5.6)

21 (35.6)

22 (28.6)

  

Unclear

5 (27.8)

4 (6.8)

9 (11.7)

  

Followed PRISMA guideline

   

10.00

<  0.01

No

18 (100.0)

36 (61.0)

54 (70.1)

  

Yes

0 (0.0)

23 (39.0)

23 (29.9)

  

Protocol or Registration

   

0.73

0.39

No

15 (83.3)

41 (69.5)

56 (72.7)

  

Yes

3 (16.7)

18 (30.5)

21 (27.3)

  

Journal source of SCI

   

0.13

0.72

No

2 (11.1)

3 (5.1)

5 (6.5)

  

Yes

16 (88.9)

56 (94.9)

72 (93.5)

  

Manuscript length (no. of pages)

   

0.53

0.47

1~ 13

8 (44.4)

32 (54.2)

40 (51.9)

  

> 13

10 (55.6)

27 (45.8)

37 (48.1)

  

Funding support

   

0.07

0.79

No

11 (61.1)

34 (57.6)

45 (58.4)

  

Yes

7 (38.9)

25 (42.4)

32 (41.6)

  

The total score (\( \overline{x} \)± s)

17.11 ± 4.59

20.83 ± 3.78

19.96 ± 4.26

−3.47

<  0.01

  1. Asia (China, Hong kong, Taiwan, Jepan, Korea, Singapore); Europe (Britain, Netherlands, Germany, Sweden, Spain, Norway, Finland, Belgium, Ireland)
  2. Significant results are shown in bold