G F Parsons | Search PubMed

PubMed1994

High and low surgical procedure rates in census divisions across Canada.

This paper identifies outliers (unusually high or low values) among rates of 39 surgical procedures in 255 Canadian census divisions. Surgery rates for the two-year period from April 1988 through March 1990 were standardized for age and sex, and then "normalized" to adjust for differences in census division population sizes. Among the 39 procedures, a total of 402 outlying census division rates were found, of which 48 were deemed to be very high, 254 high, 79 low, and 21 very low. The results are presented for individual procedures, by province, and for the 16 census divisions in which medical schools and their associated teaching hospitals are located.

Adolescent↗

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Apparent nitrogen digestibility data: AACC-ASTM collaborative study.

Apparent nitrogen digestibility data were obtained from 4 laboratories for 6 protein sources and 2 diet levels, 6 and 10% protein, after a 2-day adaptation period during the AACC-ASTM protein efficiency ratio (PER) and net protein ratio (NPR) collaborative studies. For 5 protein sources fed as 10% of the diet, the interlaboratory variation as measured by coefficient of variation (CV) values was low (1.5-3.5%), indicating high precision of the method. Wheat flour (6% protein diet) had the highest variation and, therefore, the lowest precision (CV of 7.10%). The interlaboratory variation (CV value) for 3 of the 4 laboratories was considerably lower, less than half that for the 4 laboratories. An analysis of variance of apparent nitrogen digestibility data indicated significant (P less than 0.05) effects for the 4-laboratory group due to laboratories and protein diets at both 10 and 6% protein levels, and for the 3-laboratory group at the 10% protein level. The 3-laboratory ANOVA for the 6% diets indicated a significant effect (P less than 0.05) due to diet only.

Animals↗