Folic Acid Taken Around the Time of Conception Can Lower

question 10

Multiple Choice

Folic acid taken around the time of conception can lower the incidence of __________, and taken during the last 10 weeks of pregnancy cuts in half the risk of __________.

• A) maternal high blood pressure; premature birth
• B) anemia; cleft palate
• C) neural tube defects; premature delivery
• D) anemia; low birth weight

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Definitions:

First-Order Autocorrelation

First-order autocorrelation is a statistical measure indicating the correlation between values in a time series and their immediate predecessors.

Durbin-Watson D Statistic

A statistical tool designed to determine the existence of first-lag autocorrelation in the residuals of a regression analysis.

Regression Analysis

A statistical method for investigating the relationship between a dependent variable and one or more independent variables.

Durbin-Watson Statistic

A measure used in statistics to find out whether autocorrelation at lag one occurs in the residuals after performing a regression analysis.