𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Investigation of formulæ for determining the proper size of shafts and piston rods

✍ Scribed by D.M. Greene


Book ID
113154189
Publisher
Elsevier Science
Year
1864
Tongue
English
Weight
203 KB
Volume
77
Category
Article
ISSN
0016-0032

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A METHOD FOR DETERMINING THE SIZE OF INT
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The assessment of sample size in clinical trials comparing population means requires a variance estimate of the main efficacy variable. When this variance estimate has a low precision, it may be appropriate to use the data from the first patients entered in the trial ('internal pilot study') to esti