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Table 3 Unadjusted and adjusted incidence rate ratios for the total number of CONSORT extension for HIV abstract items reported

From: Abstracts reporting of HIV/AIDS randomized controlled trials in general medicine and infectious diseases journals: completeness to date and improvement in the quality since CONSORT extension for abstracts

Variables

Total number of items reported

Univariate analysis

Multivariate analysis

Incidence rate ratio (95 % CI)

p

Adjusted incidence rate ratio (95 % CI)

p

Journal field

- General medicine

33.11 (9.72–112.73)

< .001

1.19 (1.00–1.41)

.052

- Infectious diseases

  

1

 

CONSORT endorsement

- Non endorser journals

  

1

 

- Endorser journals

11.22 (3.90–32.27)

< .001

1.01 (0.85–1.21)

.900

Abstract format

- One-block

  

1

 

- IMRAD

20.69 (6.94–61.61)

< .001

1.11 (0.81–1.51)

.524

- Eight-heading

57.81 (14.64–228.23)

< .001

1.28 (1.00–1.67)

.061

Pharmacological/Vaccine intervention

- Yes

  

1

 

- No

0.40 (0.11–1.42)

.155

1.19 (1.03–1.37)

.015

Journal impact factor

- <10

  

1

 

- ≥10

511.06 (186.40–1401.21)

< .001

2.16 (1.83–2.54)

< .001

Number of authors

- Less than 6

  

1

 

- 7–12

3.81 (0.75–19.41)

.108

1.18 (0.98–1.48)

.140

- More than 13

89.74 (15.30–526.36)

< .001

1.39 (1.07–1.79)

.013

Publication on behalf of a collaboration research group

- No

  

1

 

- Yes

13.09 (3.50–48.97)

< .001

0.99 (0.88–1.11)

.867

  1. CI confidence interval, CONSORT consolidated standards of reporting trials, IMRAD introduction, methods, results and discussion