Table 2

Credibility ratings by ghostwriting condition
Outcome Variable No Ghostwriting (n = 35) Ghostwriting (n = 32) P-value* Difference of Medians (95% CI)*
Mean ± SD Median Mean ± SD Median
Truthful 4.54 ±1.25 5.00 3.28 ±1.78 3.00 .003
Accurate 4.23 ±1.21 4.00 3.72 ±1.76 3.50 .144
Credible 4.14 ±1.26 4.00 2.84 ±1.78 2.50 .001
Honest 4.46 ±1.42 4.00 2.53 ±1.90 2.00 <.001
Sincere 4.63 ±1.37 5.00 3.00 ±1.95 2.00 <.001
Overall Credibility Scale Total 22.00 ±5.87 23.00 15.37 ±7.85 13.00 <.001 9.00 (4.00 – 12.00)

*As calculated using the Mann–Whitney U test.

Out of an achievable scale total of 35 points.

Lacasse et al.

Lacasse et al. BMC Research Notes 2012 5:490   doi:10.1186/1756-0500-5-490

Open Data