A difficult birth or a history of mental illness in a parent may put a baby at greater risk for autism. The Centers for Disease Control and Prevention said that in a study of 698 Danish children with the developmental disorder, researchers found a disproportionately high number had been born before the 35th week of pregnancy, had suffered from low birth weights and were in a breech position at birth. The children, all of whom were born after 1972 and diagnosed with autism before 2000, also were more likely to have a parent who had been diagnosed with schizophrenia-like psychosis before the autism was discovered. What is the response variable in this study?
a. time of birth (before or after week 35)
b. birth weight (low or normal)
c. birth position (breech or normal)
d. presence of autism
Question 2
A difficult birth or a history of mental illness in a parent may put a baby at greater risk for autism. The Centers for Disease Control and Prevention said that in a study of 698 Danish children with the developmental disorder, researchers found a disproportionately high number had been born before the 35th week of pregnancy, had suffered from low birth weights and were in a breech position at birth. The children, all of whom were born after 1972 and diagnosed with autism before 2000, also were more likely to have a parent who had been diagnosed with schizophrenia-like psychosis before the autism was discovered. What type of study is this?
a. A prospective observational study
b. A retrospective observational study
c. A casecontrol study
d. An experiment
Greater sage grouse
Nursing history for nose and sinus assessment
Changes in Synaptic Density From Birth to Age 2 Synaptic connections increase throughout the first
U.S. Cancer Risk—Racial Diversity
Pregnant and Lactating Women, Children, the Ill, and Older Adults Are at the Highest Risk
Risk of Down Syndrome (Trisomy 21) by Maternal Age