Table 3.

Results of multivariate analysis (multiple Poisson regression) relating the total number of reported abstract items among 16 Consolidated Standards of Reporting Trials recommendations per considered randomised controlled trial publications (n=136) to general characteristics of the underlying journals; associations between violation counts and journal characteristics were quantified via incidence rate ratios (IRR) point estimates and the corresponding unadjusted two-sided 95% CI (CI lower and upper bound, respectively); unadjusted two-sided p values were derived from likelihood ratio tests and indicate locally significant associations in case of p≤0.05

	IRR	95% CI lower	95% CI upper	P values
(Intercept)	4.318	3.254	5.730	<0.001
Publication date (<2008/≥2008)	1.109	0.975	1.261	0.115
Abstract word count	1.002	1.001	1.003	0.001

AIC: 587.27