This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Population: 298,891,000 Deaths: 2,225,000 Live births: 4,190,000 Deaths of infants under 1 year ... (Read 81 times)

chandani

  • Hero Member
  • *****
  • Posts: 541
on: Aug 2, 2018
Population: 298,891,000
  Deaths: 2,225,000
  Live births: 4,190,000
  Deaths of infants under 1 year of age: 28,000
 
  Deaths of infants under 28 days of age: 6000
  Fetuses delivered without life after 20 weeks of gestation: 37,000
  Women aged 15-44: 62,348,000
 
  Find the crude mortality rate.
  A) 134,333.0 B) 531.0 C) 0.7 D) 7.4

Question 2

To determine whether taking one aspirin each day reduces the risk of heart attacks, researchers assign patients to one of two groups:
 
  (1 ) a group that took one aspirin each day and (2 ) a placebo group. The researchers summarized the sample design as a prospective, randomized, double-blind, placebo-controlled trial. Describe the meaning of each of these terms in the context of this study.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bdobbins

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Aug 2, 2018
Answer to Question 1

D

Answer to Question 2

Prospective: Data is collected in the future from groups that either did or did not get one aspirin each day.
Randomized: Patients were randomly assigned to one of the 2 groups.
Double-blind: Neither the patients or the researchers knew who was given aspirin.
Placebo-controlled: A placebo group was used as a baseline to compare the aspirin group with.


chandani

  • Member
  • Posts: 541
Reply 2 on: Aug 2, 2018
Great answer, keep it coming :)

bimper21

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

The most polygynous primates live in groups with many more females than males. The most polygynous primates live in groups with many more females than males.
Elizabeth, a married 35-year-old woman, always thought that she followed a sensible diet Elizabeth, a married 35-year-old woman, always thought that she followed a sensible diet
World Population, 10,000 B.C. to A.D. 2010 World Population, 10,000 B.C. to A.D. 2010
Research that has examined babies' ability to recognize themselves develops in the 2 year Research that has examined babies' ability to recognize themselves develops in the 2 year
Typical bacterial population growth curve showing the initial lag phase Typical bacterial population growth curve showing the initial lag phase
Predicted Proportions in a Population Predicted Proportions in a Population
Video: New DNA Strand Replication

For a complete list of videos, visit our video library