experiments chapter 11 part 4 n.
Skip this Video
Loading SlideShow in 5 Seconds..
Experiments chapter 11 part 4 PowerPoint Presentation
Download Presentation
Experiments chapter 11 part 4

Loading in 2 Seconds...

  share
play fullscreen
1 / 27
Download Presentation

Experiments chapter 11 part 4 - PowerPoint PPT Presentation

janna
186 Views
Download Presentation

Experiments chapter 11 part 4

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Experiments chapter 11 part 4 Experimental Design

  2. Control Group A group in the experiment that gets a fake treatment and are used to compare against the groups who get real treatments. Use to measure the effects of the treatment.

  3. Control Treatment The measurement from the control group used as a baseline to compare the treatment groups against

  4. PlaceboPlacebo Effect -A fake treatment that looks just like the real treatment used to make the subjects think that they have received the treatment. -The effect the subjects get from the placebo just because they think they got the real treatment even though they did not. Click pills for clip

  5. Blinding – Single and Double -Keeping anyone who could affect the outcome or measurement of the response variable from knowing which subjects have been assigned to which treatments. -people are so good at picking up subtle cues from researchers and workers that the researchers and workers who come in contact with the subjects should be kept from knowing who gets what treatment.

  6. Class Practice

  7. Best Medicine? At one time, a method called “gastric freezing” was used to treat people with peptic ulcers. An inflatable bladder was inserted down the throat and into the stomach and then a cold liquid was pumped into the bladder. Now you can find the following notice on the internet site of a major insurance company.

  8. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B1) What are the subjects/units of the experiment?

  9. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B2) What is/are the factor(s) of the experiment?

  10. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B3) What are the treatments?

  11. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B4) Is there a placebo in this experiment?

  12. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B5) Explain what the control group is?

  13. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B6) Explain what double blind means in this experiment?

  14. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B7) How were other factors controlled in the experiment?

  15. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B8) What was randomized in the experiment?

  16. Best Medicine? Our company does not cover gastric freezing for chronic peptic ulcer disease. Gastric freezing for chronic peptic ulcers is a non-surgical treatment which was popular about 20 years ago but now is seldom performed. It has been abandoned due to high complications, only temporary improvement and a lack of effectiveness when tested by double-blind, controlled clinical trials. B9) What was replicated?

  17. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. 1) What are the subjects/units of the experiment? Answer on student notes.

  18. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 2) What is the factor of the experiment? Answer on student notes.

  19. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 3) What are the treatments? Answer on student notes.

  20. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 4) Is there a placebo in this experiment? Answer on student notes.

  21. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 5) Explain what the control group is? Answer on student notes.

  22. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 6) Explain what double blind means in this experiment? Answer on student notes.

  23. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 7) How were other factors controlled in the experiment? Answer on student notes.

  24. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 8) What was randomized in the experiment? Answer on student notes.

  25. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 9) What was replicated? Answer on student notes.

  26. Bipolar Disorder Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a placebo. The experiment involved a control group of subjects who received a placebo. • 10) Why not just give everyone the omega-3 fats? Answer on student notes.

  27. END