Read the descriptions of the following studies and DETERMINE the STUDY DESIGN and EXPLAIN why.

Case study 1:

Cryptosporidiosis is an enteric illness that is frequently waterborne.

Cadavis and colleagues (researchers ) could find no published studies of the risk factors for cryptosporidiosis in immunocompetent adults.

Patients with cryptosporidiosis were recruited from a surveillance system, and age matched controls were recruited by random digit dialing.

Subjects in both groups were interviewed by telephone to obtain information about previous exposures.

Read the descriptions of the following studies and DETERMINE the STUDY DESIGN and EXPLAIN why.

Case #2:

Mr. Bacarisas and coworkers designed a study to determine the efficacy of immunotherapy with ant venom for treating anti stings.

The study involved a group of 68 adults who were allergic to ant stings; each subject was randomly assigned to receive either venom immunotherapy or a placebo.

After a sting challenge in which any reactions were recorded, the group originally on the placebo was given the venom immunotherapy, and after a sufficient time, they too were given a sting challenge.

Read the descriptions of the following studies and DETERMINE the STUDY DESIGN and EXPLAIN why.

The Prostate Cancer Outcomes Study was designed to investigate the patterns of cancer care and effects of treatment on quality of life.

Ms. Tomenio and coworkers (2001) identified eligible cases from pathology facilities within 6 months of diagnosis.

A random sample of eligible cases were contacted and asked to complete a questionnaire on their initial treatment and to provide permission to the investigators to abstract their medical records to obtain information on their initial care.

What is the difference between Case control & Cohort Study?

What is the difference between Prospective Cohort study & Historical Cohort Study?

What is the difference between Concurrent control and Sequential Control?

IDENTIFICATION:

It is the application of population based information to decision making about individual patients for public health purposes.

(a)  

IDENTIFICATION:

it is the Simplest design in which the author describes some interesting or intriguing observations that occurred for small number of patients.

(a)  

It is a type of Experiemntal study in which the experimental drug or procedure is compared with another drug or procedure

(a)  

It is a type of observational study in which subject are selected and information are obtained in a short period of time

(a)