8. An investigator examined cases of fetal death in 27,000 pregnancies, classify

Question

8. An investigator examined cases of fetal death in 27,000 pregnancies, classifying mothers according to whether they had experienced sexual intercourse within 1 month before delivery Sexual intercourse during this period was more commonly practiced by mothers of fetuses that died than by the mothers of fetuses that survived (11% vs. 2.596, p-0042). It was concluded that intercourse during the month preceding delivery caused the fetal deaths. This conclusion: a. b. c. d. e. Appears reasonable, given the information presented May be incorrect because there is no comparison group May be incorrect because of failure to achieve a high level of statistical significance May be incorrect because prevalence rates are used where incidence rates are needed May be incorrect because mothers who had intercourse during the month before childbirth may differ in other important characteristics from those who did not

Explanation / Answer

Fetal death which is also known as stillbirth often occur at or after 20 to 28 week of pregnancy. There are many reson s for stillbirth (or fetal death) some of them are as follow

1) Poor health condition in mothers : for example mother may be suffer from diabetes,kidney disease, thyroid disorder etc

2) Infections during the pregnancy

3) Smoking and alcohol drinking habits, drug use.

4) Sexual intercourse during pregnancy with complications

But it is proven in many studies that in an uncomlicated pregnancy sexual inter course is not the reason for stilbirth.

So without taking other factors like poor health condition in mothers, infection during pregnancy, alcohol and smoking habits, drug use etc. We can not draw any conclusion about the actual cause of stillbirth.

Therefore, the correct answer would be,

e) May be incorrect because mothers who had intercourse during the month before childbirth my differ in other important characteristics from those who did not.

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