The Accuracy of Occupational Vital Statistics

The accuracy of occupational vital statistics.

Statistics of mortality and morbidity in different occupational groups are essential for the effective practice of industrial medicine in the major industries. For coal-mining in 1950, the Registrar General (1954) reported a standardized mortality ratio for " hewers and getters ", i.e., coalface workers, of 154; and the Ministry of Pensions and National Insurance (1955) reported that the rate o...

The Elements of Vital Statistics

Interpretation of Vital Statistics

The field of vital statistics is as open to investigation, analysis and experimentation as it was three hundred years ago when John Graunt (1620 -1674) introduced the observations on the London Bills of Mortality. The research possibilities are sometimes overlooked by statisticians and demographers because the registration systems now established in developed countries seem routinized and steri...

the effects of error correction methods on pronunciation accuracy

هدف از انجام این تحقیق مشخص کردن موثرترین متد اصلاح خطا بر روی دقت آهنگ و تاکید تلفظ کلمه در زبان انگلیسی بود. این تحقیق با پیاده کردن چهار متد ارائه اصلاح خطا در چهار گروه، سه گروه آزمایشی و یک گروه تحت کنترل، انجام شد که گروه های فوق الذکر شامل دانشجویان سطح بالای متوسط کتاب اول passages بودند. گروه اول شامل 15، دوم 14، سوم 15 و آخرین 16 دانشجو بودند. دوره مربوطه به مدت 10 هفته ادامه یافت و د...

Principles of Vital Statistics

rain, m.u. i aie univcrsny, ruuaueipma and London : W. B. Saunders Co., Ltd. 1923. Pp. 258. Price, 12s. 6d. net. This small volume is an essay for the practising physician and health worker rather than a text-book for the public health student. As it deals with American statistical data which are differently recorded from those of England, the book is not adapted for teaching in India or Englan...