Skip to main content

Table 2 Univariable and covariance analysis for predictive factors on PRISMA scores

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

    PRISMA univariable analysis    PRISMA covariance analysis  
Variable Category/unit Mean Diff. 95% CI P value Mean Diff. 95% CI P value
Publication time Before PRISMA Reference    Reference   
  After PRISMA 3.72 1.59, 5.85 <  0.01 1.65 0.19, 3.10 0.03
Type of article Systematic reviews only Reference    Reference   
  Meta-analyses only 1.93 −1.55, 5.42 0.19 1.71 −0.78, 4.20 0.18
  Systematic reviews including meta-analyses 5.00 2.97, 7.03 <  0.01 2.57 1.02, 4.13 <  0.01
Origin region of first author Asia Reference    Reference   
  Europe −0.23 - 2.82, 2.37 0.86 0.93 −0.91, 2.76 0.32
  U.S.A/Canada −2.55 − 5.86, 0.76 0.13 0.67 − 1.48,1.97 0.76
  Australia − 2.21 −5.94, 1.52 0.24 0.07 −2.70, 2.57 0.96
Number of authors 1~ 4 Reference    Reference   
  > 4 3.83 2.04, 5.62 <  0.01 1.15 −0.33, 2.53 0.13
International collaborative authorship No Reference    Reference   
  Yes 0.85 −1.84, 3.51 0.54 −1.16 − 2.80, 0.47 0.16
Number of affiliations of author 1~ 3 Reference    Reference   
  > 3 2.47 0.43, 4.52 0.02 −0.18 −1.59, 1.22 0.79
Affiliation of first author University Reference    Reference   
  Hospital −1.16 − 4.52, 2.20 0.49 − 0.86 −1.19, 2.92 0.40
  Institute −2.45 - 5.11, 0.21 0.07 0.38 −1.33, 2.09 0.66
journal type of published article Nursing Journal Reference    Reference   
  Non Nursing Journal 2.58 0.44, 4.72 0.02 0.30 −1.14, 1.73 0.68
Number of included studies < 10 Reference    Reference   
  ≥10 −0.74 − 2.186, 1.38 0.49 − 1.06 −2.32, 0.19 0.10
RCT identified Non-RCT Reference    Reference   
  Only RCT 3.19 1.31, 5.06 <  0.01 −0.16 −1.73, 1.41 0.84
  Can’t answer −4.59 −7.22, − 1.95 <  0.01 −2.19 −4.20, − 0.18 0.03
Followed PRSIMA guideline No Reference    Reference   
  Yes 2.91 0.89, 4.93 <  0.01 1.22 −0.18 2.63 0.09
Protocol or Registration No Reference    Reference   
  Yes 5.03 3.18, 6.88 <  0.01 2.75 1.38, 4.12 <  0.01
Journal source of SCI No Reference    Reference   
  Yes 7.44 3.89, 11.00 <  0.01 3.76 1.34, 6.18 <  0.01
Manuscript length (no. of pages) 1~ 13 Reference    Reference   
  > 13 2.68 0.83, 4.52 <  0.01 1.63 0.42, 2.84 <  0.01
Funding support No Reference    Reference   
  Yes 3.49 1.69, 5.29 <  0.01 2.41 1.22, 3.60 <  0.01
  1. Significant results are shown in bold