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The following excerpt from How Statistical Expertise Is Used in Medical Research (Altman, D. G., S. N. Goodman, and S. Schroter, Journal of the
The following excerpt from "How Statistical Expertise Is Used in Medical Research" (Altman, D. G., S. N. Goodman, and S. Schroter, Journal of the American Medical Association 287(21):2817-20, 2002) describes the data collection method for this study. Authors of original research articles who submitted to BMJ [British Medical Journal]and Annals of Internal Medicine from May through August 2001 were sent a short questionnaire....Authors were asked if they received assistance from a person with statistical expertise. In the first sample, of the 190 who did not work with a statistician, 145 had papers rejected without peer review. In the second sample, of the 514 who did work with a statistician, 300 had papers rejected without peer review. For Input Box #1, Write the lower bound of the 95% Confidence Interval. Use this formula and round your answer to 2 decimal places (P1 - P2) P1 (1-1) p2 (1-2) Z V + n1 n2 Write your answer rounded to the hundredths place. For Input Box #2, Write the upper bound of the 95% Confidence Interval. Use this formula - (P1 P2) V P1 (1-1) p2 (1-2) + n1 n2 Write your answer rounded to the hundredths place.
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