Chapter 3. Probability

Chapter 3: Probability 793-7 Rates of Mortality, Fertility, and MorbidityFinding Rates. In Exercises 1 – 8, use the data given below (based on data from the U.S. Census Bureau) to findthe indicated rates. Round results to one decimal place, and use a multiplying factor of k= 1000 unless indicatedotherwise.1. Neonatal mortality rateNeonatalmortality rate⎛⎜⎝⎛ number of deathsof infantsunder 28daysof age ⎞= ⎜⎟ k =⎝ total number of livebirths ⎠18,000 ⎞⎟∗1000= 0.00447∗1000= 4.5 (rounded)4,026,000⎠2. Fetal mortality rate⎛ number of fetuses delivered without life after 20 weeks of gestation ⎞Fetal mortality rate = ⎜⎟ k =⎝ total number of live births + fetuses delivered without life 20 weeks gestation ⎠⎛ 39,900⎜⎝ 4,026,000 + 39,900⎞⎟ ∗⎠⎛1000 = ⎜⎝39,9004,065,900⎞⎟ ∗⎠1000 = 0.00981 ∗1000= 9.8 (rounded )3. Perinatal mortality ratePerinatal mortality rate⎛ number of fetal deaths + number of neonataldeaths ⎞= ⎜⎟ k =⎝ number of live births + number of fetal deaths ⎠⎛ 39,000 + 18,000 ⎞ ⎛⎜⎟∗1000= ⎜⎝ 4,026,000 + 39,900 ⎠ ⎝57,900 ⎞⎟∗1000= 0.0142∗1000= 14.24,065,900 ⎠4. Crude birthrateCrude birthrate⎛ number of live births ⎞= ⎜⎟ k⎝ total number in population ⎠⎛= ⎜⎝4,026,000285,318,000⎞⎟ ∗⎠1000 =0.0141 ∗1000= 14.1 (rounded )5. General fertility rateGeneral fertility rate⎛ number of live births ⎞ ⎛= ⎜⎟ k = ⎜⎝ number in women aged15 - 44 ⎠ ⎝4,026,000 ⎞⎟ ∗100061,811,000 ⎠0.0651∗1000= 65.1(rounded)