Answer
Who: 882 births;
Cases: Each of the 882 births is a case;
What: Mother’s age, length of pregnancy, type of birth, level of prenatal care, birth weight of baby, sex of baby, and baby’s health problems;
When: 1998–2000;
Where: Large city hospital;
Why: Researchers were investigating the impact of prenatal care on newborn health;
How: Not specified exactly, but probably from hospital records;
Variable: Mother’s age; Type: Quantitative; Units: Not specified, probably years;
Variable: Length of pregnancy; Type: Quantitative; Units: Weeks;
Variable: Birth weight of baby; Type: Quantitative; Units: Not specified, probably pounds and ounces;
Variable: Type of birth; Type: Categorical;
Variable: Level of prenatal care; Type: Categorical;
Variable: Sex; Type: Categorical;
Variable: Baby’s health problems; Type: Categorical
Work Step by Step
Who: 882 births;
Cases: Each of the 882 births is a case;
What: Mother’s age, length of pregnancy, type of birth, level of prenatal care, birth weight of baby, sex of baby, and baby’s health problems;
When: 1998–2000;
Where: Large city hospital;
Why: Researchers were investigating the impact of prenatal care on newborn health;
How: Not specified exactly, but probably from hospital records;
Variable: Mother’s age; Type: Quantitative; Units: Not specified, probably years;
Variable: Length of pregnancy; Type: Quantitative; Units: Weeks;
Variable: Birth weight of baby; Type: Quantitative; Units: Not specified, probably pounds and ounces;
Variable: Type of birth; Type: Categorical;
Variable: Level of prenatal care; Type: Categorical;
Variable: Sex; Type: Categorical;
Variable: Baby’s health problems; Type: Categorical
