0 to calculate independent samples nonparametric t tests (Mann-Whitney U), we examined mean differences between the FWPE/OTS scores of the historical control group
and the simulation group.
5%) of the rates of rebleeding between the patients in this study (1/30) and the first historical control group
[comprising 80 patients with hyphema treated with oral placebo at our department (26/80)] demonstrated statistically significant differences.
11 The current study evaluated its effectiveness on 188 newborns with severe indirect hyperbilirubinaemia and compared it to a historical control group
consisting of 177 neonates treated with conventional phototherapy.
The study compared the outcomes of trials for the same treatments and found that 79% of clinical trials with a historical control group
showed a benefit over control, while only 20% of trials with a direct control group showed a benefit over control.
This study examines the rate of late-preterm birth in a hypnosis group (directed to all women) and a historical control group
Also, comparison of mortality with a historical control group
is biased, as general treatment of ARDS has changed substantially in the last decade.