Comparison of HTA reviews with other reviews using PRISMA. In nine PRISMA items the HTA reviews were significantly better reported than in other types of reviews. The numbered items (#) correspond to the PRISMA item numbers (see table 1). In item #5, the relative risk was undefined, but, Fisher's exact test demonstrated a significant difference, (p = 0.0038), in favour of the HTA reports. RR (95% CI) denotes the relative risk with the associated 95% confidence interval.