Question

Study A) Using pediatricians’ records, randomly select 200 children with DM and 800 children without DM; interview their mothers concerning infant feeding history. Compare the infant feeding history among children with and without DM.

Study B) Review pediatricians’ records for a random sample of 1,000 youth age 12-19 years old and record DM status and infant feeding history for each youth.

Study C) Send letters and make follow-up telephone calls to the mothers of 1,000 12-year old boys and girls who have tested negative for diabetes within the past six months. Request the parents’ consent to review their child’s medical records annually until the child reaches age 20. Obtain information on infant feeding status from the medical record and a parental questionnaire.

Study D) Send letters and make follow-up telephone calls to 1,000 mothers of newborn babies asking the mothers to participate in a study in which the investigators will randomly assign mothers to breastfeed or formula feed and will review the annual pediatric visit records for the child through age 20 years.

Study E) Examine the correlation between per capita formula sales and DM prevalence across the 20 towns in Maramba.

Which one of the observational (i.e., non-experimental) studies would provide data to estimate the incidence of diabetes in breastfed children?

Study A)

Study B)

Study C)

Study D)

Study E)

Which of Hill's guidelines is satisfied in Study C, assuming the exposure data are accurate?

A) Biological Plausibility

B) Consistency

C) Temporality

D) Strength of Association

Answer 1

Answer of first question is" Study D)"

Reason:- only in this 1,000 mothers of newborn babies asking the mothers to participate in a study in which the investigators will randomly assign mothers to breastfeed or formula feed and will review the annual pediatric visit records for the child through age 20 years.

So in this study those mothers are involved whose children is breastfed. if child have diabetes then it should be reported.

This way this study is best study for provide data to estimate the incidence of diabetes in breastfed children.

Answer of second question is "B)Consistency "

Reason:- In study C those mothers are involved whose children tested negative for diabetes within the past six months. Request the parents’ consent to review their child’s medical records annually until the child reaches age 20.

So thi study tell about consistency of negative report of diabetes from past six month.

I hope you understand.

Thank you.