The type of defect that is more than twice the risk to occur in the multiple-births than in single newborns. Concept introduction: During the gestation period, the mother can have a single birth or multiple births. A single birth is one in which only one fetus is carried during the gestation period in the womb. A multiple birth is one in which more than one fetus is carried during the gestation period such as twins, triplets, quadruplets, and so on. Carrying more than one fetus in the womb results in the insufficient supply of nutrients to the developing fetus. These fetuses become still-born or born with abnormalities.

Question

Data:Total Births: 2,700 Low Birth Weight: 264Mothers with inter-gestational interval < 12 months: 92Mothers with low birth weight with inter-gestational interval < 12 months: 21Mothers with previous HTN: 18Mothers with low birth weight with previous HT: 15 A) Global or absolute risk of low birth weight.B) Relative risk for the factor "inter-gestational interval < 12 months". According to the results obtained, give your opinion as to whether there is an association or not and express it accordingly.C) Relative risk for the factor "mothers with previous HTN". According to the results obtained, give your opinion as to whether or not there is an association and express it accordingly.D) In the case of the factors in which you consider, according to the results obtained, that there is an association, calculate the Attributable Risk (AR) and the Etiological Risk Fraction (ERF), expressing in both cases their significance.

Answer 1

Question

Chapter 42, Problem 3DAA

Summary Introduction

To explain: The type of defect that is more than twice the risk to occur in the multiple-births than in single newborns.

Concept introduction: During the gestation period, the mother can have a single birth or multiple births. A single birth is one in which only one fetus is carried during the gestation period in the womb. A multiple birth is one in which more than one fetus is carried during the gestation period such as twins, triplets, quadruplets, and so on. Carrying more than one fetus in the womb results in the insufficient supply of nutrients to the developing fetus. These fetuses become still-born or born with abnormalities.

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