SlideShare a Scribd company logo
Scientists at the National Institutes of Health are testing the effectiveness of a new vaccine in
preventing HIV infection among prostitutes. Half the women receive the experimental vaccine
and half receive an injection of salt water, and the women are then monitored for development of
HIV infection. What kind of epidemiologic study is this? Case-control Retrospective
Intervention or Experimental Cohort

More Related Content

More from 3galokelectricalspvt

Section 1- DNA Technology - 30 marks Definitions- 1-1 A collection of.pdf
Section 1- DNA Technology - 30 marks Definitions- 1-1 A collection of.pdfSection 1- DNA Technology - 30 marks Definitions- 1-1 A collection of.pdf
Section 1- DNA Technology - 30 marks Definitions- 1-1 A collection of.pdf
3galokelectricalspvt
 
Search for a single- specific current issue associated with tropical c.pdf
Search for a single- specific current issue associated with tropical c.pdfSearch for a single- specific current issue associated with tropical c.pdf
Search for a single- specific current issue associated with tropical c.pdf
3galokelectricalspvt
 
Screen 1 -- display index page Once user clicks on List students.pdf
Screen 1 -- display index page    Once user clicks on List students.pdfScreen 1 -- display index page    Once user clicks on List students.pdf
Screen 1 -- display index page Once user clicks on List students.pdf
3galokelectricalspvt
 
Screcn shot P Fxplanafion twitki time staimp- 3- Greate a file by usin.pdf
Screcn shot P Fxplanafion twitki time staimp- 3- Greate a file by usin.pdfScrecn shot P Fxplanafion twitki time staimp- 3- Greate a file by usin.pdf
Screcn shot P Fxplanafion twitki time staimp- 3- Greate a file by usin.pdf
3galokelectricalspvt
 
Scores on a standard IQ test for the population has a mean of 100 and.pdf
Scores on a standard IQ test for the population has a mean of 100 and.pdfScores on a standard IQ test for the population has a mean of 100 and.pdf
Scores on a standard IQ test for the population has a mean of 100 and.pdf
3galokelectricalspvt
 
Scope creep is a tool for risk assessment- Select one- True False If t.pdf
Scope creep is a tool for risk assessment- Select one- True False If t.pdfScope creep is a tool for risk assessment- Select one- True False If t.pdf
Scope creep is a tool for risk assessment- Select one- True False If t.pdf
3galokelectricalspvt
 
Scenario 2- Medical Records Release Form Patient is checking out and h.pdf
Scenario 2- Medical Records Release Form Patient is checking out and h.pdfScenario 2- Medical Records Release Form Patient is checking out and h.pdf
Scenario 2- Medical Records Release Form Patient is checking out and h.pdf
3galokelectricalspvt
 
Scientists believe the earliest forms of life did not have both DNA an.pdf
Scientists believe the earliest forms of life did not have both DNA an.pdfScientists believe the earliest forms of life did not have both DNA an.pdf
Scientists believe the earliest forms of life did not have both DNA an.pdf
3galokelectricalspvt
 
Scenario 1- Suppose a population has a trait controlled by a gene with.pdf
Scenario 1- Suppose a population has a trait controlled by a gene with.pdfScenario 1- Suppose a population has a trait controlled by a gene with.pdf
Scenario 1- Suppose a population has a trait controlled by a gene with.pdf
3galokelectricalspvt
 
Saved Visitors to a Humane Society were asked how many snakes they hav.pdf
Saved Visitors to a Humane Society were asked how many snakes they hav.pdfSaved Visitors to a Humane Society were asked how many snakes they hav.pdf
Saved Visitors to a Humane Society were asked how many snakes they hav.pdf
3galokelectricalspvt
 
Scenario -#2 Mike's boss is Tom- who as manager of the physician group.pdf
Scenario -#2 Mike's boss is Tom- who as manager of the physician group.pdfScenario -#2 Mike's boss is Tom- who as manager of the physician group.pdf
Scenario -#2 Mike's boss is Tom- who as manager of the physician group.pdf
3galokelectricalspvt
 
Save & Exit Practice Lesson- 4-1 Introduction to Probability (1)-(11).pdf
Save & Exit Practice Lesson- 4-1 Introduction to Probability (1)-(11).pdfSave & Exit Practice Lesson- 4-1 Introduction to Probability (1)-(11).pdf
Save & Exit Practice Lesson- 4-1 Introduction to Probability (1)-(11).pdf
3galokelectricalspvt
 
Sara- a 35-year-old Hispanic woman- visited her family physician compl.pdf
Sara- a 35-year-old Hispanic woman- visited her family physician compl.pdfSara- a 35-year-old Hispanic woman- visited her family physician compl.pdf
Sara- a 35-year-old Hispanic woman- visited her family physician compl.pdf
3galokelectricalspvt
 
Sanders Company purchased goods with the following terms and details-.pdf
Sanders Company purchased goods with the following terms and details-.pdfSanders Company purchased goods with the following terms and details-.pdf
Sanders Company purchased goods with the following terms and details-.pdf
3galokelectricalspvt
 
Sarasota Company ended its fiscal year on July 31- 2022- The company's.pdf
Sarasota Company ended its fiscal year on July 31- 2022- The company's.pdfSarasota Company ended its fiscal year on July 31- 2022- The company's.pdf
Sarasota Company ended its fiscal year on July 31- 2022- The company's.pdf
3galokelectricalspvt
 
Sanger sequencing uses which of the following to determine the nucleot.pdf
Sanger sequencing uses which of the following to determine the nucleot.pdfSanger sequencing uses which of the following to determine the nucleot.pdf
Sanger sequencing uses which of the following to determine the nucleot.pdf
3galokelectricalspvt
 
Sandpiper Company has 10-000 shares of cumulative preferred 3- stock-.pdf
Sandpiper Company has 10-000 shares of cumulative preferred 3- stock-.pdfSandpiper Company has 10-000 shares of cumulative preferred 3- stock-.pdf
Sandpiper Company has 10-000 shares of cumulative preferred 3- stock-.pdf
3galokelectricalspvt
 
Sandhill Inc- provided several entertainment services to Swifty Corpor.pdf
Sandhill Inc- provided several entertainment services to Swifty Corpor.pdfSandhill Inc- provided several entertainment services to Swifty Corpor.pdf
Sandhill Inc- provided several entertainment services to Swifty Corpor.pdf
3galokelectricalspvt
 
Sancha funs Enter a posenenintegst his invalid inpot Enser a positue u.pdf
Sancha funs Enter a posenenintegst his invalid inpot Enser a positue u.pdfSancha funs Enter a posenenintegst his invalid inpot Enser a positue u.pdf
Sancha funs Enter a posenenintegst his invalid inpot Enser a positue u.pdf
3galokelectricalspvt
 
Sanchez Company had the following year-end balances- Cash $325-000 Mar.pdf
Sanchez Company had the following year-end balances- Cash $325-000 Mar.pdfSanchez Company had the following year-end balances- Cash $325-000 Mar.pdf
Sanchez Company had the following year-end balances- Cash $325-000 Mar.pdf
3galokelectricalspvt
 

More from 3galokelectricalspvt (20)

Section 1- DNA Technology - 30 marks Definitions- 1-1 A collection of.pdf
Section 1- DNA Technology - 30 marks Definitions- 1-1 A collection of.pdfSection 1- DNA Technology - 30 marks Definitions- 1-1 A collection of.pdf
Section 1- DNA Technology - 30 marks Definitions- 1-1 A collection of.pdf
 
Search for a single- specific current issue associated with tropical c.pdf
Search for a single- specific current issue associated with tropical c.pdfSearch for a single- specific current issue associated with tropical c.pdf
Search for a single- specific current issue associated with tropical c.pdf
 
Screen 1 -- display index page Once user clicks on List students.pdf
Screen 1 -- display index page    Once user clicks on List students.pdfScreen 1 -- display index page    Once user clicks on List students.pdf
Screen 1 -- display index page Once user clicks on List students.pdf
 
Screcn shot P Fxplanafion twitki time staimp- 3- Greate a file by usin.pdf
Screcn shot P Fxplanafion twitki time staimp- 3- Greate a file by usin.pdfScrecn shot P Fxplanafion twitki time staimp- 3- Greate a file by usin.pdf
Screcn shot P Fxplanafion twitki time staimp- 3- Greate a file by usin.pdf
 
Scores on a standard IQ test for the population has a mean of 100 and.pdf
Scores on a standard IQ test for the population has a mean of 100 and.pdfScores on a standard IQ test for the population has a mean of 100 and.pdf
Scores on a standard IQ test for the population has a mean of 100 and.pdf
 
Scope creep is a tool for risk assessment- Select one- True False If t.pdf
Scope creep is a tool for risk assessment- Select one- True False If t.pdfScope creep is a tool for risk assessment- Select one- True False If t.pdf
Scope creep is a tool for risk assessment- Select one- True False If t.pdf
 
Scenario 2- Medical Records Release Form Patient is checking out and h.pdf
Scenario 2- Medical Records Release Form Patient is checking out and h.pdfScenario 2- Medical Records Release Form Patient is checking out and h.pdf
Scenario 2- Medical Records Release Form Patient is checking out and h.pdf
 
Scientists believe the earliest forms of life did not have both DNA an.pdf
Scientists believe the earliest forms of life did not have both DNA an.pdfScientists believe the earliest forms of life did not have both DNA an.pdf
Scientists believe the earliest forms of life did not have both DNA an.pdf
 
Scenario 1- Suppose a population has a trait controlled by a gene with.pdf
Scenario 1- Suppose a population has a trait controlled by a gene with.pdfScenario 1- Suppose a population has a trait controlled by a gene with.pdf
Scenario 1- Suppose a population has a trait controlled by a gene with.pdf
 
Saved Visitors to a Humane Society were asked how many snakes they hav.pdf
Saved Visitors to a Humane Society were asked how many snakes they hav.pdfSaved Visitors to a Humane Society were asked how many snakes they hav.pdf
Saved Visitors to a Humane Society were asked how many snakes they hav.pdf
 
Scenario -#2 Mike's boss is Tom- who as manager of the physician group.pdf
Scenario -#2 Mike's boss is Tom- who as manager of the physician group.pdfScenario -#2 Mike's boss is Tom- who as manager of the physician group.pdf
Scenario -#2 Mike's boss is Tom- who as manager of the physician group.pdf
 
Save & Exit Practice Lesson- 4-1 Introduction to Probability (1)-(11).pdf
Save & Exit Practice Lesson- 4-1 Introduction to Probability (1)-(11).pdfSave & Exit Practice Lesson- 4-1 Introduction to Probability (1)-(11).pdf
Save & Exit Practice Lesson- 4-1 Introduction to Probability (1)-(11).pdf
 
Sara- a 35-year-old Hispanic woman- visited her family physician compl.pdf
Sara- a 35-year-old Hispanic woman- visited her family physician compl.pdfSara- a 35-year-old Hispanic woman- visited her family physician compl.pdf
Sara- a 35-year-old Hispanic woman- visited her family physician compl.pdf
 
Sanders Company purchased goods with the following terms and details-.pdf
Sanders Company purchased goods with the following terms and details-.pdfSanders Company purchased goods with the following terms and details-.pdf
Sanders Company purchased goods with the following terms and details-.pdf
 
Sarasota Company ended its fiscal year on July 31- 2022- The company's.pdf
Sarasota Company ended its fiscal year on July 31- 2022- The company's.pdfSarasota Company ended its fiscal year on July 31- 2022- The company's.pdf
Sarasota Company ended its fiscal year on July 31- 2022- The company's.pdf
 
Sanger sequencing uses which of the following to determine the nucleot.pdf
Sanger sequencing uses which of the following to determine the nucleot.pdfSanger sequencing uses which of the following to determine the nucleot.pdf
Sanger sequencing uses which of the following to determine the nucleot.pdf
 
Sandpiper Company has 10-000 shares of cumulative preferred 3- stock-.pdf
Sandpiper Company has 10-000 shares of cumulative preferred 3- stock-.pdfSandpiper Company has 10-000 shares of cumulative preferred 3- stock-.pdf
Sandpiper Company has 10-000 shares of cumulative preferred 3- stock-.pdf
 
Sandhill Inc- provided several entertainment services to Swifty Corpor.pdf
Sandhill Inc- provided several entertainment services to Swifty Corpor.pdfSandhill Inc- provided several entertainment services to Swifty Corpor.pdf
Sandhill Inc- provided several entertainment services to Swifty Corpor.pdf
 
Sancha funs Enter a posenenintegst his invalid inpot Enser a positue u.pdf
Sancha funs Enter a posenenintegst his invalid inpot Enser a positue u.pdfSancha funs Enter a posenenintegst his invalid inpot Enser a positue u.pdf
Sancha funs Enter a posenenintegst his invalid inpot Enser a positue u.pdf
 
Sanchez Company had the following year-end balances- Cash $325-000 Mar.pdf
Sanchez Company had the following year-end balances- Cash $325-000 Mar.pdfSanchez Company had the following year-end balances- Cash $325-000 Mar.pdf
Sanchez Company had the following year-end balances- Cash $325-000 Mar.pdf
 

Recently uploaded

NLC-2024-Orientation-for-RO-SDO (1).pptx
NLC-2024-Orientation-for-RO-SDO (1).pptxNLC-2024-Orientation-for-RO-SDO (1).pptx
NLC-2024-Orientation-for-RO-SDO (1).pptx
ssuserbdd3e8
 
Jose-Rizal-and-Philippine-Nationalism-National-Symbol-2.pptx
Jose-Rizal-and-Philippine-Nationalism-National-Symbol-2.pptxJose-Rizal-and-Philippine-Nationalism-National-Symbol-2.pptx
Jose-Rizal-and-Philippine-Nationalism-National-Symbol-2.pptx
ricssacare
 
The approach at University of Liverpool.pptx
The approach at University of Liverpool.pptxThe approach at University of Liverpool.pptx
The approach at University of Liverpool.pptx
Jisc
 
How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...
Jisc
 
Unit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdfUnit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdf
Thiyagu K
 
Embracing GenAI - A Strategic Imperative
Embracing GenAI - A Strategic ImperativeEmbracing GenAI - A Strategic Imperative
Embracing GenAI - A Strategic Imperative
Peter Windle
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
GeoBlogs
 
Supporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptxSupporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptx
Jisc
 
MARUTI SUZUKI- A Successful Joint Venture in India.pptx
MARUTI SUZUKI- A Successful Joint Venture in India.pptxMARUTI SUZUKI- A Successful Joint Venture in India.pptx
MARUTI SUZUKI- A Successful Joint Venture in India.pptx
bennyroshan06
 
Introduction to Quality Improvement Essentials
Introduction to Quality Improvement EssentialsIntroduction to Quality Improvement Essentials
Introduction to Quality Improvement Essentials
Excellence Foundation for South Sudan
 
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXXPhrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
MIRIAMSALINAS13
 
Basic_QTL_Marker-assisted_Selection_Sourabh.ppt
Basic_QTL_Marker-assisted_Selection_Sourabh.pptBasic_QTL_Marker-assisted_Selection_Sourabh.ppt
Basic_QTL_Marker-assisted_Selection_Sourabh.ppt
Sourabh Kumar
 
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdfUnit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Thiyagu K
 
Synthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptxSynthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptx
Pavel ( NSTU)
 
How to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERPHow to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERP
Celine George
 
Template Jadual Bertugas Kelas (Boleh Edit)
Template Jadual Bertugas Kelas (Boleh Edit)Template Jadual Bertugas Kelas (Boleh Edit)
Template Jadual Bertugas Kelas (Boleh Edit)
rosedainty
 
Basic phrases for greeting and assisting costumers
Basic phrases for greeting and assisting costumersBasic phrases for greeting and assisting costumers
Basic phrases for greeting and assisting costumers
PedroFerreira53928
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
siemaillard
 
Sectors of the Indian Economy - Class 10 Study Notes pdf
Sectors of the Indian Economy - Class 10 Study Notes pdfSectors of the Indian Economy - Class 10 Study Notes pdf
Sectors of the Indian Economy - Class 10 Study Notes pdf
Vivekanand Anglo Vedic Academy
 
B.ed spl. HI pdusu exam paper-2023-24.pdf
B.ed spl. HI pdusu exam paper-2023-24.pdfB.ed spl. HI pdusu exam paper-2023-24.pdf
B.ed spl. HI pdusu exam paper-2023-24.pdf
Special education needs
 

Recently uploaded (20)

NLC-2024-Orientation-for-RO-SDO (1).pptx
NLC-2024-Orientation-for-RO-SDO (1).pptxNLC-2024-Orientation-for-RO-SDO (1).pptx
NLC-2024-Orientation-for-RO-SDO (1).pptx
 
Jose-Rizal-and-Philippine-Nationalism-National-Symbol-2.pptx
Jose-Rizal-and-Philippine-Nationalism-National-Symbol-2.pptxJose-Rizal-and-Philippine-Nationalism-National-Symbol-2.pptx
Jose-Rizal-and-Philippine-Nationalism-National-Symbol-2.pptx
 
The approach at University of Liverpool.pptx
The approach at University of Liverpool.pptxThe approach at University of Liverpool.pptx
The approach at University of Liverpool.pptx
 
How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...
 
Unit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdfUnit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdf
 
Embracing GenAI - A Strategic Imperative
Embracing GenAI - A Strategic ImperativeEmbracing GenAI - A Strategic Imperative
Embracing GenAI - A Strategic Imperative
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
 
Supporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptxSupporting (UKRI) OA monographs at Salford.pptx
Supporting (UKRI) OA monographs at Salford.pptx
 
MARUTI SUZUKI- A Successful Joint Venture in India.pptx
MARUTI SUZUKI- A Successful Joint Venture in India.pptxMARUTI SUZUKI- A Successful Joint Venture in India.pptx
MARUTI SUZUKI- A Successful Joint Venture in India.pptx
 
Introduction to Quality Improvement Essentials
Introduction to Quality Improvement EssentialsIntroduction to Quality Improvement Essentials
Introduction to Quality Improvement Essentials
 
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXXPhrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
Phrasal Verbs.XXXXXXXXXXXXXXXXXXXXXXXXXX
 
Basic_QTL_Marker-assisted_Selection_Sourabh.ppt
Basic_QTL_Marker-assisted_Selection_Sourabh.pptBasic_QTL_Marker-assisted_Selection_Sourabh.ppt
Basic_QTL_Marker-assisted_Selection_Sourabh.ppt
 
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdfUnit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdf
 
Synthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptxSynthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptx
 
How to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERPHow to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERP
 
Template Jadual Bertugas Kelas (Boleh Edit)
Template Jadual Bertugas Kelas (Boleh Edit)Template Jadual Bertugas Kelas (Boleh Edit)
Template Jadual Bertugas Kelas (Boleh Edit)
 
Basic phrases for greeting and assisting costumers
Basic phrases for greeting and assisting costumersBasic phrases for greeting and assisting costumers
Basic phrases for greeting and assisting costumers
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
Sectors of the Indian Economy - Class 10 Study Notes pdf
Sectors of the Indian Economy - Class 10 Study Notes pdfSectors of the Indian Economy - Class 10 Study Notes pdf
Sectors of the Indian Economy - Class 10 Study Notes pdf
 
B.ed spl. HI pdusu exam paper-2023-24.pdf
B.ed spl. HI pdusu exam paper-2023-24.pdfB.ed spl. HI pdusu exam paper-2023-24.pdf
B.ed spl. HI pdusu exam paper-2023-24.pdf
 

Scientists at the National Institutes of Health are testing the effect.pdf

  • 1. Scientists at the National Institutes of Health are testing the effectiveness of a new vaccine in preventing HIV infection among prostitutes. Half the women receive the experimental vaccine and half receive an injection of salt water, and the women are then monitored for development of HIV infection. What kind of epidemiologic study is this? Case-control Retrospective Intervention or Experimental Cohort