Figure 6From: Extent of publication bias in different categories of research cohorts: a meta-analysis of empirical studies Funnel plots -- publication of positive and non-positive results. (Funnel plot asymmetry test: p = 0.178 for inception cohort studies, p = 0.262 for regulatory cohort studies, p = 0.142 for abstract cohort studies, and p = 0.942 for manuscript cohort studies.)Back to article page