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Lecture 6

Lecture 6

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University of Toronto Scarborough
Health Studies
Lianne Tripp

Lecture 6 – HLTB15 - Z scores can tell us where there is a difference between two items. If the value is greater than 1.96, we will say there is a statistical significance. When the found value is below we accept the null hypothesis of no change. - Based on example in class:  52.54 - 45.66 / square root of [(0.56)squared + (0.52)squared]  6.88 / square root of [0.584]  6.88 / 0.764  9.00 - Years of potential life lost (YPLL) is calculated for a specific cause of death and typically range from thousands to millions. We won’t actually be able to calculate this on the exam. - Equation: YPLL = total of [person’s age at death – predetermined age at death (which is 65 in the USA)] - Tay Sach’s = always leads to death by the age of 3 or 4, it’s a neurodegenerative disease, gene is passed on from parents. - Example in class: What disease has the highest YPLL, Tay Sach’s or breast cancer? ANSWER = Tay Sach’s (highest means the more likely to die earlier) Defining Disability - Disease  impairment  disability  handicap - (DFLE) Disability free life expectancy – looks at number of years people live in a population without a disa
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