Sentence examples for were needed to observe from inspiring English sources

Thus, at least 200 participants per group were needed to observe significant differences between the two groups at the 5% confidence level with 80% statistical power.

We previously showed for (R)- 2, and several structurally related compounds, that concentrations from 5 8-fold greater than the determined inactivation IC5 8-fold were needed to observe frequency (use)-inhibition in CAD cells.

Power calculations suggested that a total of 154 patients were needed to observe a difference in delirium occurrence based on the reported incidences but the study included only 33 patients.

This new phase one was deemed necessary as animal data suggested that repeated administration of OM-174 were needed to observe anti-tumor effect, with a maximal effect observed after 15 injections.

Using percentage of time with pH above 3 as the primary endpoint, an alpha risk of 5% and a beta risk of 20%, and considering a variation rate of 67%, 18 subjects were needed to observe a significant difference between both treatment groups.

Remarkably, cell observation under a TEM revealed that flagellum biosynthesis occurred immediately in the presence of 8 mM As III) while more than two days were needed to observe flagella in the absence of arsenite (fig. 4 B and C), providing evidence that arsenite promotes motility in Rhizobium sp. NT-26.

Further studies with longer observation time are needed to observe the clinical relevance of the results.

Although the human eye remains an important astronomical tool, detectors capable of greater sensitivity and more rapid response are needed to observe at visible wavelengths and, especially, to extend observations beyond that region of the electromagnetic spectrum.

Standing beside Mr. Arafat at his Ramallah headquarters, Secretary Powell said that monitors would be needed to observe the cease-fire, an apparent confirmation of the Palestinian leader's request for international monitors.

The figure shows that sufficient energy, (k>0.004), is needed to observe the splitting of the wavepacket.

Other techniques are needed to observe this effect (and others) in the data.