Table 2 Univariate and multivariate predictive models of PRISMA-A items reported in abstracts of SRs on psoriasis interventions

Abstract word count

≤ 300

98

1

> 300

40

1.068(0.539)

0.049

0.741(0.332)

1.456(0.658-3.240)

Abstract format

8-headings

16

1

IMRAD

77

− 1.205(0.418)

0.004

− 0.049(0.418)

0.951(0.420-2.153)

Free format

45

− 1.539(0.445)

< 0.001

− 0.152(0.415)

0.858(0.378-1.939)

Cochrane affiliation

Yes

9

1.068(0.539)

0.049

0.543(0.734)

1.722(0.401-7.296)

No

129

1

Number of authors

≤ 6

102

1

> 6

36

0.600(0.303)

0.049

0.725(0.341)

1.098(1.012-1.194)

Conflict of interest

≤ 20%

59

1

> 20%

61

− 0.400(0.260)

0.126

Funding source

Academic

39

1.156(0.283)

< 0.001

1.247(0.428)

3.630(1.788-7.542)

Pharmaceutical

40

− 0.198(0.297)

0.506

No funding/UNK

59

0.302(0.478)

0.528

PRISMA endorser journal

Yes

10

1.562(0.448)

0.002

2.016(0.698)

4.370(1.785-10.98)

No

117

1

PRISMA-A statement

Review published before

71

− 0.421(0.371)

0.119

Review published after

68

1

Journal impact factor

≤ 3

74

1

> 3

43

0.331(0.373)

0.014

0.331(0.373)

1.392(0.669-2.912)